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Sweetening

Going HAM

Sweetening
Aug 1st, 2023
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  1. Freq (MHz) Satellite Transmission Notes
  2. 470.000
  3.  
  4. Mixed - music and telemetry : Failed to reach orbit, the music consisted of songs in praise of Korean leaders Kim Jong Il and Kim Il Sung. The previous KMS satellite (2009) also failed to reach orbit and was reported to use the same frequency.
  5. 2282.500
  6. SGLS 17
  7. AIM
  8. 2007-015A
  9. 31304 FM NASA - atmospheric studies: Indistinct lines when viewed with SDR and software
  10. 400.450
  11. Akebono
  12. 1989-016A
  13. 19822 CW modulated Studies of Magnetosphere and Ionosphere - Japan: Carrier with data modulation - appears as a tone modulated by a buzz
  14. 2207.500
  15. SGLS 2
  16. AMS 2
  17. 1977-044A
  18. 10033 CW carrier plus side-bands Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2237.5MHz and 2252.5 MHz - Frequency Information contributed by the late Ivan Artner
  19. 2237.500
  20. SGLS 8
  21. AMS 2
  22. 1977-044A
  23. 10033 CW - wide sweeping carrier Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2207.5MHz and 2252.5 MHz
  24. 2252.500
  25. SGLS 11
  26. AMS 2
  27. 1977-044A
  28. 10033 CW carrier plus side-bands Military meteorological satellite: Advanced Meteorological Satellite - Also transmits at 2207.5 MHz and 2234.5 MHz - Frequency Information contributed by the late Ivan Artner
  29. 400.595
  30. AprizeSat
  31. 2
  32. 2004-025A
  33. 28366 Data bursts, approx 35s intervals Data comms: -
  34. 2287.500
  35. SGLS 18
  36. Aqua
  37. 2002-022A
  38. 27424 CW carrier + sidebands Climate research: Frequency is +/-10 kHz
  39. 150.012
  40. ARGOS
  41. 1999-008A
  42. 25634 CW - Doppler tracking beacon USAF space experiments: Coherent transmission at 400.032 MHz - Ceased to transmit 2003
  43. 400.032
  44. ARGOS
  45. 1999-008A
  46. 25634 CW - Doppler tracking beacon USAF space experiments: Coherent transmission at 150.012 MHz - Ceased to transmit 2003
  47. 2242.517
  48. SGLS 9
  49. ASTEX
  50. 1971-089A
  51. 5560 Multiple sidebands - very small dispersion Technology experiments: Old satellite detected as still transmitting during 2008 March
  52. 2287.500
  53. SGLS 18
  54. Aura
  55. 2004-026A
  56. 28376 CW carrier + sidebands Climate research: Frequency is +/-10 kHz
  57. 1018.500
  58. Briz-M
  59.  
  60. CW carrier plus sidebands Space launcher: Final launch vehicle stage, also transmits 1020.5 MHz - first tracked by Sven Grahn
  61. 1020.500
  62. Briz-M
  63.  
  64. CW carrier plus sidebands Space launcher: Final launch vehicle stage, also transmits 1018.5 MHz - first tracked by Sven Grahn
  65. 180.011
  66. CBERS 1
  67. 1999-057A
  68. 25940 CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz - and further carriers at +/- 40 kHz Remote sensing: China Brasil Earth Resources Satellite - Coherent transmission at 480.025 MHz - Silent since mid 2003, the last public report being 2003 Jun 6 by Maik Hermenau of www.satellitenwelt.de
  69. 480.025
  70. CBERS 1
  71. 1999-057A
  72. 25940 CW - Doppler tracking beacon Remote sensing: China Brasil Earth Resources Satellite - Coherent transmission at 180.011 MHz - silent since mid-2003
  73. 180.014
  74. CBERS 2
  75. 2003-049A
  76. 28057 CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 480.037 MHz, also transmits 2204.400 MHz and 2267.500 MHz, ceased to transmit 2007
  77. 480.037
  78. CBERS 2
  79. 2003-049A
  80. 28057 CW - Doppler tracking beacon Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 180.014 MHz, also transmits 2204.400 MHz and 2267.500 MHz, ceased to transmit 2007
  81. 2204.400
  82. CBERS 2
  83. 2003-049A
  84. 28057 CW carrier + sidebands Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2267.500 MHz, ceased to transmit 2007
  85. 2267.500
  86. CBERS 2
  87. 2003-049A
  88. 28057 CW carrier + sidebands Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.014 MHz, 480.037 MHz and 2204.400 MHz, ceased to transmit 2007
  89. 180.013
  90. CBERS 2B
  91. 2007-042A
  92. 32062 CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 480.033 MHz, also transmits 2204.400 MHz and 2267.500 MHz. No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March.
  93. 480.033
  94. CBERS 2B
  95. 2007-042A
  96. 32062 CW - Doppler tracking beacon Remote sensing: China Brazil Earth Resources Satellite - Coherent transmission at 180.013 MHz, also transmits at 2204.400 MHz and 2267.500 MHz. No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March
  97. 2204.400
  98. CBERS 2B
  99. 2007-042A
  100. 32062 CW carrier plus data sidebands Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.013 MHz, 480.033 MHz and 2267.500 MHz. No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March
  101. 2267.500
  102. CBERS 2B
  103. 2007-042A
  104. 32062 CW carrier + sidebands Remote sensing: China Brazil Earth Resources Satellite, also transmits 180.013 MHz and 480.033 MHz and 2204.400 MHz. No longer transmitting - switched off 2010 May 10 after an operating anomaly was detected 2010 March
  105. 2234.520
  106. Chang'e 1
  107. 2007-051A
  108. 32273 CW carrier plus data sidebands and secondary carriers - two modes - 2 MHz bandwidth and 256 kHz bandwidth Lunar orbiting satellite: Lunar probe built and launched by the Peoples' Republic of China, originally tracked in HEO and then followed to the Moon. Mission ended 2010 Mar 1 when Chang'e made a retrograde rocket firing and impacted the lunar surface.
  109. 2270.000
  110. Chibis-M
  111. 2011-062C
  112. 38051 Lightning studies satellite: Frequency information provided by Sven Grahn
  113. 2249.995
  114. Chuangxin
  115. 1-02
  116. 2008-056B
  117. 33434 CW carrier + sidebands Earth observation - meteorological data for disaster relief: -
  118. 2217.500
  119. SGLS 4
  120. Cloudsat
  121. 2006-016A
  122. 29107 CW carrier + sidebands NASA - cloud & precipitation studies: Frequency is approximate
  123. 137.350
  124. Compass 2
  125. 2006-019A
  126. 29157 CW/AM Russian scientific satellite studying possible ways of predicting earthquakes - not operating properly: After launch on 2006 May 26 - bursts of CW tone one to ten seconds duration in groups with peaks at central frequency and +/- 64 kHz - As of 2006 Nov 16 - data transmission at 64 kHz side bands only
  127. 2222.528
  128. SGLS 5
  129. Coriolis
  130. 2003-001A
  131. 27640 CW carrier plus side-bands Military science satellite: Frequency Information contributed by the late Ivan Artner, also transmits at 2212.504 MHz
  132. 2212.504
  133. SGLS 3
  134. Coriolis
  135. 2003-001A
  136. 27640 CW carrier plus side-bands Military science satellite: Also transmits at 2222.528 MHz
  137. 149.970
  138. Cosmos
  139. 2336
  140. 1996-071A
  141. 24677 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz
  142. 399.920
  143. Cosmos
  144. 2336
  145. 1996-071A
  146. 24677 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.970 MHz
  147. 149.910
  148. Cosmos
  149. 2341
  150. 1997-017A
  151. 24772 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.920 MHz
  152. 399.760
  153. Cosmos
  154. 2341
  155. 1997-017A
  156. 24772 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.910 MHz
  157. 150.030
  158. Cosmos
  159. 2361
  160. 1998-076A
  161. 25590 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Coherent transmission at 400.080 MHz
  162. 400.080
  163. Cosmos
  164. 2361
  165. 1998-076A
  166. 25590 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Non operational but still transmitting 2000 December 13 - Coherent transmission at 150.030 MHz
  167. 150.300
  168. Cosmos
  169. 2373
  170. 2000-058A
  171. 26552 AM telemetry - wide bandwidth Photographic mapping: Coherent transmission at 400.800 MHz - Cameras and film recovered after mission running between 2000 September 29 and 2000 November 14 - no longer in orbit
  172. 400.800
  173. Cosmos
  174. 2373
  175. 2000-058A
  176. 26552 CW - Doppler tracking beacon Photographic mapping: Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2000 September 29 and 2000 November 14 - no longer active
  177. 149.940
  178. Cosmos
  179. 2378
  180. 2001-023A
  181. 26818 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz
  182. 399.840
  183. Cosmos
  184. 2378
  185. 2001-023A
  186. 26818 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz
  187. 244.512
  188. Cosmos
  189. 2385
  190. 2001-058B
  191. 27056 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  192. 261.035
  193. Cosmos
  194. 2385
  195. 2001-058B
  196. 27056 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  197. 262.910
  198. Cosmos
  199. 2386
  200. 2001-058C
  201. 27057 Data transmission as messages are forwarded Store and Forward communications: This is a Gonets-D1 even though listed elsewhere as Strela-3. There was a NORAD name mix-up with Gonets D1-8. Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  202.  
  203. 245.157
  204. Cosmos
  205. 2386
  206. 2001-058C
  207. 27057 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  208. 2298.000
  209. Cosmos
  210. 2388
  211. 2002-017A
  212. 27409 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at at 2298.0 MHz - ceased to operate 2006 November
  213. 2304.000
  214. Cosmos
  215. 2388
  216. 2002-017A
  217. 27409 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2298.0 MHz - ceased to operate 2006 November
  218. 149.970
  219. Cosmos
  220. 2389
  221. 2002-026A
  222. 27436 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.920 MHz
  223. 399.840
  224. Cosmos
  225. 2389
  226. 2002-026A
  227. 27436 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz
  228. 244.512
  229. Cosmos
  230. 2390
  231. 2002-036A
  232. 27464 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  233. 261.035
  234. Cosmos
  235. 2390
  236. 2002-036A
  237. 27464 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  238. 244.512
  239. Cosmos
  240. 2391
  241. 2002-036B
  242. 27465 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  243. 261.035
  244. Cosmos
  245. 2391
  246. 2002-036B
  247. 27465 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  248. 2298.000
  249. Cosmos
  250. 2393
  251. 2002-059A
  252. 27613 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March
  253. 2304.000
  254. Cosmos
  255. 2393
  256. 2002-059A
  257. 27613 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmitted at 2286.0 MHz - ceased to operate 2007 March
  258. 149.910
  259. Cosmos
  260. 2398
  261. 2003-023A
  262. 27818 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.760 MHz
  263. 399.760
  264. Cosmos
  265. 2398
  266. 2003-023A
  267. 27818 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.910 MHz
  268. 244.512
  269. Cosmos
  270. 2400
  271. 2003-037A
  272. 27868 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  273. 261.035
  274. Cosmos
  275. 2400
  276. 2003-037A
  277. 27868 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  278. 244.512
  279. Cosmos
  280. 2408
  281. 2004-037A
  282. 28419 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  283. 261.035
  284. Cosmos
  285. 2408
  286. 2004-037A
  287. 28419 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  288. 244.512
  289. Cosmos
  290. 2409
  291. 2004-037B
  292. 28420 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  293. 261.035
  294. Cosmos
  295. 2409
  296. 2004-037B
  297. 28420 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  298. 150.300
  299. Cosmos
  300. 2415
  301. 2005-034A
  302. 28841 CW - Doppler tracking beacon Photographic reconnaissance: Coherent transmission at 400.800 MHz - Cameras and film recovered after mission mission running between 2005 September 2 and 2005 October 14 - transmissions heard over the USA - no longer in orbit
  303. 400.800
  304. Cosmos
  305. 2415
  306. 2005-034A
  307. 28841 CW - Doppler tracking beacon Photographic reconnaissance: Coherent transmission at 150.300 MHz - Cameras and film recovered after mission running between 2005 September 2 and 2005 October 14? - no longer active
  308. 2286.001
  309. Cosmos
  310. 2422
  311. 2006-030A
  312. 29260 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2292.001 MHz, operates only above the northern hemisphere
  313. 2292.001
  314. Cosmos
  315. 2422
  316. 2006-030A
  317. 29260 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2286.001 MHz, operates only above the northern hemisphere
  318. 2298.000
  319. Cosmos
  320. 2430
  321. 2007-049A
  322. 32268 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2304.0 MHz, operates only above the northern hemisphere
  323. 2304.000
  324. Cosmos
  325. 2430
  326. 2007-049A
  327. 32268 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.0 MHz, operates only above the northern hemisphere
  328. 244.512
  329. Cosmos
  330. 2437
  331. 2008-025B
  332. 32954 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  333. 261.035
  334. Cosmos
  335. 2437
  336. 2008-025B
  337. 32954 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  338. 244.512
  339. Cosmos
  340. 2438
  341. 2008-025C
  342. 32955 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  343. 261.035
  344. Cosmos
  345. 2438
  346. 2008-025C
  347. 32955 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  348. 244.512
  349. Cosmos
  350. 2439
  351. 2008-025D
  352. 32956 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  353. 261.035
  354. Cosmos
  355. 2439
  356. 2008-025D
  357. 32956 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  358. 2298.000
  359. Cosmos
  360. 2446
  361. 2008-062A
  362. 33447 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2304.000 MHz, operates only above the northern hemisphere
  363. 2304.000
  364. Cosmos
  365. 2446
  366. 2008-062A
  367. 33447 CW carrier plus side-bands Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere
  368. 244.512
  369. Cosmos
  370. 2451
  371. 2009-036A
  372. 35498 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  373. 261.035
  374. Cosmos
  375. 2451
  376. 2009-036A
  377. 35498 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  378. 388.688
  379. Cosmos
  380. 2452
  381. 2009-036B
  382. 35499 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 244.999 MHz.
  383. 244.512
  384. Cosmos
  385. 2453
  386. 2009-036C
  387. 35500 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  388. 261.035
  389. Cosmos
  390. 2453
  391. 2009-036C
  392. 35500 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  393. 149.940
  394. Cosmos
  395. 2454
  396. 2009-039A
  397. 35635 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 MHz
  398. 399.840
  399. Cosmos
  400. 2454
  401. 2009-039A
  402. 35635 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz
  403. 400.117
  404. Cosmos
  405. 2463
  406. 2010-017A
  407. 36519 CW carrier Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission noted late-September 2010. The transmitter is faulty.
  408. 149.940
  409. Cosmos
  410. 2463
  411. 2010-017A
  412. 36519 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Transmission contains an almanac for all active satellites in the constellation - coherent transmission at 399.840 plus duplicated transmissions at other frequencies around 150 and 400 MHz . The transmitter is faulty.
  413. 149.665
  414. Cosmos
  415. 2463
  416. 2010-017A
  417. 36519 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz below it. The transmitter is faulty.
  418. 150.215
  419. Cosmos
  420. 2463
  421. 2010-017A
  422. 36519 FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Positional signal transmissions and store/forward comms: Duplicate of the standard 149.940 MHz transmission at a frequency 275 kHz above it. The transmitter is faulty.
  423. 399.150
  424. Cosmos
  425. 2463
  426. 2010-017A
  427. 36519 CW carrier Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz below it. The transmitter is faulty.
  428. 399.703
  429. Cosmos
  430. 2463
  431. 2010-017A
  432. 36519 CW carrier Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz below it. The transmitter is faulty.
  433. 399.840
  434. Cosmos
  435. 2463
  436. 2010-017A
  437. 36519 CW - Doppler tracking beacon Positional signal transmissions and store/forward comms: Coherent transmission at 149.940 MHz plus plus duplicated transmissions at other frequencies around 150 and 400 MHz due. The transmitter is faulty.
  438. 399.977
  439. Cosmos
  440. 2463
  441. 2010-017A
  442. 36519 CW carrier Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 137 kHz above it. The transmitter is faulty.
  443. 400.530
  444. Cosmos
  445. 2463
  446. 2010-017A
  447. 36519 CW carrier Positional signal transmissions and store/forward comms: Duplicate of the standard 399.840 MHz transmission at a frequency 690 kHz above it. The transmitter is faulty.
  448. 244.512
  449. Cosmos
  450. 2467
  451. 2010-043B
  452. 37153 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  453. 261.035
  454. Cosmos
  455. 2467
  456. 2010-043B
  457. 37153 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  458. 244.999
  459. Cosmos
  460. 2468
  461. 2010-043C
  462. 37154 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 388.688 MHz.
  463. 388.688
  464. Cosmos
  465. 2468
  466. 2010-043C
  467. 37154 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 244.999 MHz.
  468. 2292.001
  469. Cosmos
  470. 2469
  471. 2010-049A
  472. 37170 CW Missile early warning: Transmisiion not continuous, also tranmits 2286.001 MHz
  473. 2286.001
  474. Cosmos
  475. 2469
  476. 2010-049A
  477. 37170 CW Missile early warning: Transmission not continuous, also transmits 2292.001 MHz
  478. 2286.000
  479. Cosmos
  480. 2469
  481. 2010-049A
  482. 37170 Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere
  483. 2292.000
  484. Cosmos
  485. 2469
  486. 2010-049A
  487. 37170 Missile early warning: OKO satellite in highly eccentric orbit - Also transmits at 2298.000 MHz, operates only above the northern hemisphere
  488. 2241.500
  489. Delta
  490. Launch
  491. Vehicle
  492. (Second
  493. Stage)
  494.  
  495. CW + side-bands Satellite launches: Detectable during on-orbit launch vehicle operations at start of satellite mission
  496. 2257.500
  497. SGLS 12
  498. DSCS III
  499. F-1
  500. 1982-106B
  501. 13637 CW carrier plus side-bands Comms: Possibly defunct, in geosynchronous drift orbit - Frequency Information contributed by the late Ivan Artner
  502. 136.440
  503. ERS 15
  504. 1966-077C
  505. 2412 AM with 1.3 kHz tone Military satellite: Incorrectly catalogued by NORAD as SECOR 7 - (information contributed by Michael D Kenny)
  506. 136.260
  507. ERS 20
  508. 1967-040D
  509. 2768 AM - tone (unstable) USAF test satellite: High orbit, visible for long periods of time - (information contributed by Michael D Kenny)
  510. 137.142
  511. Eutelsat I
  512. F4
  513. 1987-078B
  514. 18351 CW Comms: Regular, intermittent signal possibly due to vehicle rotation causing periodic flow of power from solar panels
  515. 180.006
  516. Fengyun 1C
  517. 1999-025A
  518. 25730 CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz Meteorological imaging: Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 480.017 MHz
  519. 480.019
  520. Fengyun 1C
  521. 1999-025A
  522. 25730 CW - Doppler tracking beacon Meteorological imaging: Active transmitter until 2007 February when attacked in ground-based interceptor test - Coherent transmission at 180.007 MHz
  523. 180.007
  524. Fengyun 1D
  525. 2002-024B
  526. 27431 CW carrier on centre frequency plus telemetry sidebands at +/- 5 kHz- and further carriers at +/- 10 kHz Meteorological imaging: Coherent transmission at 480.017 MHz, also transmits 2201.050 MHz
  527. 480.017
  528. Fengyun 1D
  529. 2002-024B
  530. 27431 CW - Doppler tracking beacon Meteorological imaging: Coherent transmission at 180.007 MHz, also transmits 2201.050 MHz
  531. 2201.050
  532. Fengyun 1D
  533. 2002-024B
  534. 27431 CW Meteorological imaging: Appears to be continuous transmission - first noted 2010 September, also transmits 180.007 and 480.017 MHz
  535. 2264.700
  536. Fengyun 3A
  537. 2008-026A
  538. 32958 CW carrier + sidebands Meteorological imaging: Frequency reported 2008, also transmits 2246.400 MHz, below horizon from UK
  539. 2246.400
  540. Fengyun 3A
  541. 2008-026A
  542. 32958 CW carrier + sidebands Meteorological imaging: Frequency reported 2008, also transmits 2264.700 MHz, below horizon from UK
  543. 150.012
  544. Formosat
  545. 3A
  546. 2006-011A
  547. 29047 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz
  548. 1066.752
  549. Formosat
  550. 3A
  551. 2006-011A
  552. 29047 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  553. 400.032
  554. Formosat
  555. 3A
  556. 2006-011A
  557. 29047 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz
  558. 150.012
  559. Formosat
  560. 3B
  561. 2006-011B
  562. 29048 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz
  563. 400.032
  564. Formosat
  565. 3B
  566. 2006-011B
  567. 29048 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz
  568. 1066.752
  569. Formosat
  570. 3B
  571. 2006-011B
  572. 29048 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  573. 150.012
  574. Formosat
  575. 3C
  576. 2006-011C
  577. 29049 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032MHz and 1066.752 MHz
  578. 400.032
  579. Formosat
  580. 3C
  581. 2006-011C
  582. 29049 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz, during 2007 December, Formosat 3C appeared to be about 5 kHz lower than the nominal frequency - the other frequencies may be shifted pro-rata
  583.  
  584. 1066.752
  585. Formosat
  586. 3C
  587. 2006-011C
  588. 29049 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  589. 150.012
  590. Formosat
  591. 3D
  592. 2006-011D
  593. 29050 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz
  594. 400.032
  595. Formosat
  596. 3D
  597. 2006-011D
  598. 29050 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz
  599. 1066.752
  600. Formosat
  601. 3D
  602. 2006-011D
  603. 29050 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  604. 150.012
  605. Formosat
  606. 3E
  607. 2006-011E
  608. 29051 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz
  609. 400.032
  610. Formosat
  611. 3E
  612. 2006-011E
  613. 29051 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz
  614. 1066.752
  615. Formosat
  616. 3E
  617. 2006-011E
  618. 29051 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  619. 400.032
  620. Formosat
  621. 3F
  622. 2006
  623. 29052 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 1066.752 MHz
  624. 1066.752
  625. Formosat
  626. 3F
  627. 2006
  628. 29052 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 150.012 MHz and 400.032 MHz
  629. 150.012
  630. Formosat
  631. 3F
  632. 2006
  633. 29052 CW Atmospheric studies: Switched on when observation required, European observations usually 08:00-17:00 UTC Mon-Fri, also transmits 400.032 MHz and 1066.752 MHz
  634. 150.012
  635. Geosat
  636. 1985-021A
  637. 15595 CW - Doppler tracking beacon Oceanography - wave height measurement: Detected being switched on and off over Europe, not continuously active. Sometime around 2007, transmissions ceased to be detected but Geosat was subsequently determined to be transmitting continuously while in sunlight. Coherent transmission at 400.032 MHz
  638. 400.032
  639. Geosat
  640. 1985-021A
  641. 15595 CW - Doppler tracking beacon Oceanography - wave height measurement: Detected being switched on and off over Europe, not continuously active. Sometime around 2007, transmissions ceased to be detected but Geosat was subsequently determined to be transmitting continuously while in sunlight. Coherent transmission at 150.012 MHz
  642. 150.012
  643. GFO
  644. 1998-007A
  645. 25157 CW - Doppler tracking beacon Oceanography - wave height measurement: Geosat Follow On satellite - Coherent transmission at 400.032 MHz and also transmitted at 2207.5 MHz. Ceased to transmit 2008 November.
  646. 400.032
  647. GFO
  648. 1998-007A
  649. 25157 CW - Doppler tracking beacon Oceanography - wave height measurement: Geosat Follow On - Coherent transmission at 150.012 MHz and also transmittedat 2207.5 MHz. Ceased to transmit 2008 November.
  650. 2207.487
  651. SGLS 2
  652. GFO
  653. 1998-007A
  654. 25157 CW carrier plus side-bands Oceanography - wave height measurement: Geosat Follow On - Also transmitted at 150.012 MHz and 400.032 MHz. Ceased to transmit 2008 November.
  655. 263.086
  656. Gonets
  657. D1-1
  658. 1996-009A
  659. 23787 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  660.  
  661.  
  662.  
  663. Message Signal at 261.035 MHz.
  664. 245.157
  665. Gonets
  666. D1-1
  667. 1996-009A
  668. 23787 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  669. 265.059
  670. Gonets
  671. D1-2
  672. 1996-009B
  673. 23788 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  674.  
  675.  
  676.  
  677. Message Signal at 261.035 MHz.
  678. 245.157
  679. Gonets
  680. D1-2
  681. 1996-009B
  682. 23788 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  683. 265.137
  684. Gonets
  685. D1-3
  686. 1996-009C
  687. 23789 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 13.
  688.  
  689.  
  690.  
  691. May now be silent, no Message Signal detected 2009 Sept.
  692. 264.750
  693. Gonets
  694. D1-4
  695. 1997-006D
  696. 24728 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  697.  
  698.  
  699.  
  700. Message Signal at 261.035 MHz.
  701. 245.157
  702. Gonets
  703. D1-4
  704. 1997-006D
  705. 24728 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  706. 264.400
  707. Gonets
  708. D1-5
  709. 1997-006E
  710. 24729 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  711.  
  712.  
  713.  
  714. Message Signal at 261.035 MHz.
  715. 245.157
  716. Gonets
  717. D1-5
  718. 1997-006E
  719. 24729 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  720. 262.910
  721. Gonets
  722. D1-6
  723. 1997
  724. 24730 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  725.  
  726.  
  727.  
  728. Message Signal at 261.035 MHz.
  729. 245.157
  730. Gonets
  731. D1-6
  732. 1997
  733. 24730 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  734. 262.910
  735. Gonets
  736. D1-7
  737. 2001-058D
  738. 27058 Data transmission as messages are forwarded Store and Forward communications: Has been reported on other frequencies in the past - entry updated 2009 Mar 8.
  739. 245.157
  740. Gonets
  741. D1-7
  742. 2001-058D
  743. 27058 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  744. 244.512
  745. Gonets
  746. D1-8
  747. 2001-058E
  748. 27059 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 261.035 MHz.
  749.  
  750.  
  751.  
  752. This is a Stela-3 even though listed elsewhere as Gonets-D1. There was a NORAD name mix-up with Cosmos 2386.
  753. 261.035
  754. Gonets
  755. D1-8
  756. 2001-058E
  757. 27059 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 244.512 MHz.
  758.  
  759.  
  760.  
  761. This is a Strela-3 even though listed elsewhere as Gonets-D1. There was a NORAD name mix-up with Cosmos 2386.
  762. 262.910
  763. Gonets
  764. D1-9
  765. 2001
  766. 27060 Data transmission as messages are forwarded Store and Forward communications: Frequency is changed occasionally - entry updated 2009 Mar 8.
  767.  
  768.  
  769.  
  770. Message Signal at 261.035 MHz.
  771. 245.157
  772. Gonets
  773. D1-9
  774. 2001
  775. 27060 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at another frequency in the 240-260 MHz band
  776. 244.999
  777. Gonets M-2
  778. 2010-043A
  779. 37152 Data transmission as messages are forwarded Store and Forward communications: Message Signal at 388.688 MHz.
  780. 388.688
  781. Gonets M-2
  782. 2010-043A
  783. 37152 Message Signal every 60s, silent when receiving data message from ground Store and Forward communications: Stored messages are transmitted at 244.999 MHz.
  784. 388.688
  785. Gonets M-3
  786. 2012-041B
  787. 38734 Message Signal every 60s or 120s depending on the operating mode, silent when receiving data message from ground. Store and Forward communications: Stored messages are transmitted at 244.999 MHz.
  788. 388.688
  789. Gonets M-4
  790. 2012-041D
  791. 38736 Message Signal every 60s or 120s depending on the operating mode, silent when receiving data message from ground. Store and Forward communications: Stored messages are transmitted at 244.999 MHz.
  792. 2273.520
  793. Haiyang 1B
  794. 2007-010A
  795. 31113 CW plus data sidebands Oceanic Remote Sensing: Weak
  796. 2241.600
  797. Huan Jing
  798. 1A
  799. 2008-041A
  800. 33320 CW plus data side-bands Disaster monitoring within China: Part of constellation
  801. 2209.797
  802. Huan Jing
  803. 1B
  804. 2008-041B
  805. 33321 CW plus data sidebands Disaster monitoring within China: Strong, Part of constellation
  806. 136.410
  807. Isis 1
  808. 1969-009A
  809. 3669 CW Ionosphere studies: (information contributed by Michael D Kenny)
  810. 130.167
  811. ISS
  812. 1998-067A
  813. 25544 Medium bandwidth FM voice Space station: VHF-2 channel for Russian segment, used as an alternative to VHF-1 (143.625 MHz) during Shuttle/ISS on-orbit operations
  814. 130.167
  815. ISS
  816. 1998-067A
  817. 25544 Ranging pulses Space station: Used by TORU remote control docking system on the Russian segment, usually tested 1-2 days before a Progress docking is due, the Progress return path is at 121.750 MHz
  818. 143.625
  819. ISS
  820. 1998-067A
  821. 25544 Medium bandwidth FM voice Space station: Russian segment VHF-1 channel for communication with Moscow, also used to relay Mission Control to the Shuttle during docking.
  822.  
  823.  
  824.  
  825. Used as part of the ISS Early Communications System over the USA working with the Wallops Facility and White Sands and still used there occasionally but mainly in test mode.
  826.  
  827.  
  828.  
  829. Sven Grahn detected it carrying packet data transmissions during Expedition 1.
  830. 145.800
  831. ISS
  832. 1998-067A
  833. 25544 Amateur Radio downlink frequency Space station: Amateur radio downlink from US segment - see NASA's ARISS Page
  834. 145.825
  835. ISS
  836. 1998-067A
  837. 25544 Amateur Radio downlink frequency Space station: Amateur radio downlink from US segment - see NASA's ARISS Page
  838. 628.000
  839. ISS
  840. 1998-067A
  841. 25544 FM telemetry - sidebands at +/- 128 kHz Space station: Transmission from the Zvezda module.
  842.  
  843.  
  844.  
  845. Transmits on command from within Russia, several times per day - usually in parallel with 630 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system.
  846. 630.000
  847. ISS
  848. 1998-067A
  849. 25544 FM telemetry - sidebands at +/- 128 kHz Space station: Transmission from the Zvezda module.
  850.  
  851.  
  852.  
  853. Transmits on command from within Russia, several times per day - usually in parallel with 628 MHz - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system.
  854. 632.000
  855. ISS
  856. 1998-067A
  857. 25544 FM telemetry - sidebands at +/- 128 kHz Space station: Transmission from the Zarya module.
  858.  
  859.  
  860.  
  861. Transmissions originally reported by Sven Grahn when Zarya first reached orbit - Similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system and probably no longer in use
  862. 633.909
  863. ISS
  864. 1998-067A
  865. 25544 FM telemetry - sidebands at +/- 128 kHz Space station: Transmission from the Zarya module. The central frequency is 91 kHz lower than what might be regarded as the norm for this type of transmission.
  866.  
  867.  
  868.  
  869. Transmissions originally reported by Sven Grahn when Zarya first reached orbit - similar transmission format to Soyuz/Progress at 166 MHz but with lower power - part of the BITS telemetry system. Transmissions are infrequent.
  870. 2263.600
  871. Kaguya
  872. 2007-039A
  873. 32054 CW Carrier plus side-bands Lunar orbiting satellite: Japanese built and launched lunar probe - easily detectable, can be observed locking-on to, and releasing, the uplink as it appears or disappears at the lunar limb - transmission appears to be continuous
  874. 145.950
  875. Kedr
  876. 1998-067CK
  877. 37772 Automatic switching between several transmission modes including BPSK telemetry Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Ceased to operate on re-entry 2012 Jan 4
  878. 145.919
  879. Kedr
  880. 1998-067CK
  881. 37772 CW - morse code telemetry Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Only transmitted at this frequency when 145.950 MHz was being used for BPSK-1000 digital telemetry transmission
  882. 145.939
  883. Kedr
  884. 1998-067CK
  885. 37772 CW - morse code telemetry Amateur radio satellite released during Russian EVA from ISS 2011 Aug 3, still operating at the time of re-entry: Only used when the digital telemetry sytem switched to backup BPSK-400 mode
  886. 2298.525
  887. Mars
  888. Orbiter
  889. 2013-060A
  890. 39370 - Mars exploration:
  891. 2200.647
  892. Meteor M-1
  893. 2009-049A
  894. 35865 CW Meteorology: Appears to be continuous transmission - first noted 2010 September
  895. 435.360
  896. MiR
  897. 2012-041C
  898. 38735 Multiple side bands, varying data content Technology: Noted while checking payloads of 2012-043 Launch
  899. 2282.500
  900. SGLS 17
  901. MSX
  902. 1996-024A
  903. 23851 AM - 1 kHz tone Missile detection experiments: Midcourse Space Experiment, infrared sources with a view to improved design of missile detecting sensors - Frequency Information contributed by the late Ivan Artner
  904. 400.552
  905. Munin
  906. 2000-075C
  907. 26621 AM - modem-type databursts Auroral research - Sweden: Telemetry but silent since 2001 Feb 12 (shortly after launch) probably due to onboard computer failure - no longer active
  908. 150.000
  909. Nadezhda
  910.  
  911. FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Navigation - plus Search and Rescue monitoring: Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz
  912. 400.000
  913. Nadezhda
  914.  
  915. CW - Doppler tracking beacon Navigation - plus Search and Rescue monitoring: Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note)
  916. 2227.481
  917. SGLS 6
  918. NATO 4A
  919. 1991-001A
  920. 21047 PSK with sub-carrier, 1024 kHz Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  921. 2227.476
  922. SGLS 6
  923. NATO 4B
  924. 1993-076A
  925. 22921 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  926. 465.000
  927. Navid
  928. 2012-005A
  929. 38075 Imaging satellite: Images reported successfully returned, may only be transmitting over Iraq, uplink at 401 MHz
  930. 136.500
  931. Nimbus 4
  932. 1970-025A
  933. 4362 CW - sometimes modulated Meteorology (including imaging): Payload no longer operational - (information contributed by Michael D Kenny)
  934. 136.650
  935. NNS O-2
  936. 1964-083D
  937. 965 CW Carrier plus telemetry tones Navigation: Second operational TRANSIT navsat, navigation system failed soon after launch but transmitter is still active (information contributed by Michael D Kenny)
  938. 137.500
  939. NOAA 6
  940. 1979-057A
  941. 11416 CW - carrier only Meteorological imaging: Inactive satellite but reportedly transmitting
  942. 136.770
  943. NOAA 9
  944. 1984-123A
  945. 15427 CW Formerly meteorological imaging: Telemetry frequency, transmission is intermittent - (information contributed by Michael D Kenny) - Also has a transmission at 137.500 MHz
  946. 137.500
  947. NOAA 9
  948. 1984-123A
  949. 15427 Tone for 6 seconds out of every 25 seconds (periods vary - these are averages) Formerly meteorological imaging: Non-operational satellite but transmitter still had power long after the payload was switched off - Timings shown are as of 2001 January 6 - Probably no longer transmitting at this frequency - Also has a transmission at 136.770 MHz
  950. 137.770
  951. NOAA 11
  952. 1988-089A
  953. 19531 CW Doppler Beacon and telemetry Meteorological imaging: Continuous transmission when operational - (information contributed by Michael D Kenny) - De-commissioned 2004 June 16
  954. 2247.500
  955. SGLS 10
  956. NOAA 11
  957. 1988-089A
  958. 19531 Cyclic carrier - approx 4s on then 4s off Meteorological imaging: Satellite de-commissioned and batteries disconnected 2004 Jun 22 at 16:24:28 UTC - output from STX4 transmitter detected 2009 Oct, probably powered by output from solar cells (only detectable on daylight passes)
  959. 137.500
  960. NOAA 12
  961. 1991-032A
  962. 21263 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 15 - Also transmits at 137.770 MHz - De-commissioned 2007 Aug 10
  963. 137.770
  964. NOAA 12
  965. 1991-032A
  966. 21263 CW Doppler Beacon and telemetry Meteorological imaging: Also transmitted at 137.500 MHz - De-commissioned 2007 Aug 10
  967. 137.625
  968. NOAA 14
  969. 1994-089A
  970. 23455 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 17 - Also transmits at 137.770 MHz - Decommissioned 2007 May 23
  971. 137.770
  972. NOAA 14
  973. 1994-089A
  974. 23455 CW Doppler Beacon and telemetry Meteorological imaging: Also transmits at 137.625 MHz - Decommissioned 2007 May 23
  975. 137.350
  976. NOAA 15
  977. 1998-030A
  978. 25338 CW Doppler Beacon and telemetry Meteorological imaging: Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz
  979. 137.500
  980. NOAA 15
  981. 1998-030A
  982. 25338 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 12 - Also transmits at 137.350 MHz
  983. 137.350
  984. NOAA 16
  985. 2000-055A
  986. 26536 CW Doppler Beacon and telemetry Formerly meteorological imaging: Continuous transmission -(information contributed by Michael D Kenny) - Also transmits at 137.500 MHz
  987. 137.625
  988. NOAA 17
  989. 2002-032A
  990. 27453 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Switched off occasionally when transmissions conflict with those from NOAA 14
  991. 137.770
  992. NOAA 17
  993. 2002-032A
  994. 27453 CW Doppler Beacon and telemetry Meteorological imaging: Also transmits at 137.625 MHz
  995. 137.100
  996. NOAA 18
  997. 2005-018A
  998. 28654 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Revised frequency as of 2006 Jan 4, changed from 137.9125 MHz
  999. 137.913
  1000. NOAA 18
  1001. 2005-018A
  1002. 28654 APT at 4 lines per second - interlaced visible light and infrared images Meteorological imaging: Frequency probably not active - changed to 137.100 MHz (2006 Jan 4?)
  1003. 2247.500
  1004. SGLS 10
  1005. NOAA 19
  1006. 2009-005A
  1007. 33591 Data Metsat: STX4 transmitter - used during launch and contingency, occasionally heard from orbit and heard to switch on and off, detected 2009 Oct
  1008. 2250.000
  1009. Oceansat
  1010. P2
  1011. 2009-051A
  1012. 35931 CW carrier plus sidebands Ocean Studies: Sun-synchronous orbit, Indian satellite
  1013. 465.000
  1014. Omid
  1015. 2009-004A
  1016. 33506 AM - multiple sidebands with 25 kHz bandwidth Testing comms up/down links: Switched on and off by onboard timer programmed from the ground
  1017. 2277.485
  1018. SGLS 16
  1019. OPS 4029
  1020. 1981-107A
  1021. 12930 CW carrier plus side-bands Multi-tasking military satellite at 41° west longitude?: Geosynchronous orbit Frequency Information contributed by the late Ivan Artner
  1022. 137.410
  1023. OPS 7613-6
  1024. 1969-082E
  1025. 4237 CW USAF test satellite: (information contributed by Michael D Kenny)
  1026. 137.380
  1027. OPS 7613-1
  1028. 1969-082B
  1029. 4256 Mixed modulation (PAM/FM/AM) Navigation technology: (information contributed by Michael D Kenny)
  1030. 137.080
  1031. OPS 7898-2
  1032. 1971-110C
  1033. 5680 CW US military satellite: (information contributed by Michael D Kenny)
  1034. 2237.518
  1035. SGLS 8
  1036. OPS 3151
  1037. 1977-007A
  1038. 9803 CW carrier plus side-bands DSP - Missile early warning: Defunct satellite in geosynchronous 'graveyard' orbit - Frequency Information contributed by the late Ivan Artner
  1039. 137.200
  1040. Orbcomm
  1041.  
  1042. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
  1043. 137.225
  1044. Orbcomm
  1045.  
  1046. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
  1047. 137.250
  1048. Orbcomm
  1049.  
  1050. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies,individual satellites switch between them - Also transmits at 400.100 MHz
  1051. 137.440
  1052. Orbcomm
  1053.  
  1054. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz
  1055. 137.460
  1056. Orbcomm
  1057.  
  1058. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies, individual satellites switch between them - Also transmits at 400.100 MHz
  1059. 137.663
  1060. Orbcomm
  1061.  
  1062. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
  1063. 137.688
  1064. Orbcomm
  1065.  
  1066. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
  1067. 137.713
  1068. Orbcomm
  1069.  
  1070. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
  1071. 137.738
  1072. Orbcomm
  1073.  
  1074. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
  1075. 137.800
  1076. Orbcomm
  1077.  
  1078. Digital data - transmitted to/from mobile terminals Mobile telephony: One of several frequencies - individual satellites switch between them - Also transmits at 400.100 MHz
  1079. 400.100
  1080. Orbcomm
  1081.  
  1082. CW - Doppler tracking beacon Mobile telephony: Several satellites - Also transmitting digitised telephony signals at various frequencies 137-138 MHz (see individual entries)
  1083. 149.988
  1084. Oscar 27
  1085. 1987-080A
  1086. 18361 FM telemetry (tones) +/- 2.4 kHz from carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one) - No longer transmitting as of 2008 Jan 1
  1087. 399.968
  1088. Oscar 27
  1089. 1987-080A
  1090. 18361 Modulated CW carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one) - No longer transmitting as of 2008 Feb 1
  1091. 149.979
  1092. Oscar 29
  1093. 1987-080B
  1094. 18362 Modulated CW carrier Ionospheric modelling for US military (NIMS): Maintenance frequency - Coherent transmission at 399.944 MHz (has been heard to transmit tones similar to the other OSCAR satellite but 2003 December 28 - this frequency was occupied by a modulated 'buzzing' signal - No longer transmitting as of 2008 Feb 1
  1095. 399.944
  1096. Oscar 29
  1097. 1987-080B
  1098. 18362 Modulated CW carrier Ionospheric modelling for US military (NIMS): Maintenance frequency - Coherent transmission at 149.979 MHz (known to change between this frequency and the operational one) - No longer transmitting as of 2008 Jan 1
  1099. 149.988
  1100. Oscar 23
  1101. 1988-033A
  1102. 19070 FM telemetry (tones) +/- 2.4 kHz from carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
  1103. 399.968
  1104. Oscar 23
  1105. 1988-033A
  1106. 19070 Modulated CW carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
  1107. 149.988
  1108. Oscar 32
  1109. 1988-033B
  1110. 19071 FM telemetry (tones) +/- 2.4 kHz from carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
  1111. 399.968
  1112. Oscar 32
  1113. 1988-033B
  1114. 19071 Modulated CW carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
  1115. 149.988
  1116. Oscar 25
  1117. 1988-074A
  1118. 19419 FM telemetry (tones) +/- 2.4 kHz from carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 399.968 MHz - Occasionally changes between this frequency and the maintenance one)
  1119. 399.968
  1120. Oscar 25
  1121. 1988-074A
  1122. 19419 Modulated CW carrier Ionospheric modelling for US military (NIMS): Operational frequency - Coherent transmission at 149.988 MHz (known to change between this frequency and the maintenance one)
  1123. 149.979
  1124. Oscar 31
  1125. 1988-074B
  1126. 19420 FM telemetry (tones) +/- 2.4 kHz from carrier Ionospheric modelling for US military (NIMS): Maintenance frequency - Coherent transmission at 399.944 MHz - Occasionally changes between this frequency and the operational one - Sometime between 2007 Dec 21 and 2008 Feb 7, the normal transmissions at both frequencies were replaced with a highly unstable CW carrier (wandering frequency + variations in strength)
  1127. 399.944
  1128. Oscar 31
  1129. 1988-074B
  1130. 19420 Modulated CW carrier Ionospheric modelling for US military (NIMS): Maintenance frequency - Coherent transmission at 149.979 MHz (known to change between this frequency and the operational one) - Sometime between 2007 Dec 21 and 2008 Feb 7, the normal transmissions at both frequencies were replaced with a highly unstable CW carrier (wandering frequency + variations in strength)
  1131. 150.012
  1132. Picosat 9
  1133. 2001-043B
  1134. 26930 CW - Doppler tracking beacon USAF Space Test Program (STEP): Coherent transmission at 400.032 MHz - Ceased to transmit late-2004
  1135. 400.032
  1136. Picosat 9
  1137. 2001-043B
  1138. 26930 CW - Doppler tracking beacon USAF Space Test Program (STEP): Detected being switched on and off over Europe, not continuously active - Coherent transmission at 150.012 MHz - Ceased to transmit late-2004
  1139. 166.000
  1140. Progress
  1141. M-M
  1142.  
  1143. Telemetry transmission PCM-FM, sidebands ±128 kHz ISS supplies ferry: 2008-
  1144. 922.763
  1145. Progress
  1146. M-M
  1147.  
  1148. CW carrier. ISS supplies ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. 2008-
  1149. 2264.725
  1150. QuikScat
  1151. 1999-034A
  1152. 25789 CW + sidebands Ocean surface wind measurement using radar: Stop-gap mission launched to cover for a similar instrument aboard NSCAT, strong signal
  1153. 150.012
  1154. RADCAL
  1155. 1993-041A
  1156. 22698 CW - Doppler tracking beacon Radar calibration: Radar Calibration satellite - Coherent transmission at 400.032 MHz, operation is intermittent
  1157. 400.032
  1158. RADCAL
  1159. 1993-041A
  1160. 22698 CW - Doppler tracking beacon Radar calibration: Radar Calibration satellite - Coherent transmission at 150.012 MHz, operation is intermittent
  1161. 465.000
  1162. Rasad 1
  1163. 2011-025A
  1164. 37675 Testing gravity gradient stabilisation and, possibly, Earth imaging: Uplink at 401 MHz
  1165. 400.550
  1166. Resurs-O1
  1167. 1998-043A
  1168. 25394 CW Spread Spectrum Remote sensing: Signals from Little LEO ranging between 400.318 and 400.787 MHz - Piggy-back 'store and forward' communications payload carried by Russian satellite - Transmitter not heard since 2001 February - The meteorological payload transmitted at 137.85 MHz - no longer active
  1169. 2250.054
  1170. RISat 1
  1171. 2012-017A
  1172. 38248 - Radar imaging: Identified by Sven Grahn on day of launch
  1173. 137.300
  1174. Russian
  1175. Imaging
  1176.  
  1177. APT at 2 lines per second Meteorological and remote sensing imaging: Frequency not currently active
  1178. 137.400
  1179. Russian
  1180. Imaging
  1181.  
  1182. APT at 2 lines per second Meteorological and remote sensing imaging: Frequency not currently active
  1183. 137.850
  1184. Russian
  1185. Imaging
  1186.  
  1187. APT at 2 lines per second Meteorological and remote sensing imaging: Frequency not currently active
  1188. 2224.065
  1189. Shenzhou
  1190.  
  1191. CW carrier plus side-bands Piloted spacecraft: Frequency first detected during the Shenzhou 7 mission (2008 September) by Richard Flagg, Hawaii USA - transmission is probably continuous while in orbit
  1192. 243.000
  1193. Shenzhou
  1194.  
  1195. Signal content not known Piloted spacecraft: Recovery beacon transmitted during descent under parachute - NOTE: this is an international distress frequency
  1196. 2229.605
  1197. Shijian
  1198. 6A
  1199. 2004-035A
  1200. 28413 CW carrier + sidebands Science/technology experiments: -
  1201. 2235.800
  1202. Shijian
  1203. 6B
  1204. 2004-035B
  1205. 28414 CW carrier + sidebands Science/technology experiments: Frequency reported 2008
  1206. 2217.367
  1207. Shiyan 2
  1208. 2004-046A
  1209. 28479 CW carrier + sidebands Science/technology experiments: Strong, possibly pulsating rapidly
  1210. 2205.500
  1211. Shijian 7
  1212. 2005-024A
  1213. 28737 CW carrier + sidebands Science/technology experiments: Frequency reported 2008, also transmits 2227.500 MHz
  1214. 2227.500
  1215. Shijian 7
  1216. 2005-024A
  1217. 28737 CW carrier + sidebands Science/technology experiments: Frequency reported 2008, also transmits 2205.500 MHz
  1218. 2213.600
  1219. Shijian
  1220. 6C
  1221. 2006-046A
  1222. 29505 CW carrier + sidebands Science/technology experiments: Frequency reported 2008
  1223. 2256.251
  1224. Shijian
  1225. 6D
  1226. 2006-046B
  1227. 29506 CW carrier + sidebands Science/technology experiments: Weak signal
  1228. 2224.564
  1229. Shijian
  1230. 6-03A
  1231. 2008-053A
  1232. 33408 CW carrier + sidebands Science/technology experiments: -
  1233. 2235.800
  1234. Shijian
  1235. 6-03B
  1236. 2008-053B
  1237. 33409 CW carrier + sidebands Science/technology experiments: Frequency reported by other observers in 2008, but appears to be silent
  1238. 2251.446
  1239. Shijian
  1240. 6-03B
  1241. 2008-053B
  1242. 33409 CW carrier + sidebands Science/technology experiments: Relatively strong signal
  1243. 2230.795
  1244. Shiyan 3
  1245. 2008-056A
  1246. 33433 CW carrier + sidebands Science/technology experiments: Weak
  1247. 136.695
  1248. Shinsei
  1249. 1971-080A
  1250. 5485 CW Japanese scientific satellite: Continuous transmission - (information contributed by Michael D Kenny)
  1251. 2202.447
  1252. SGLS 1
  1253. Sicral 1A
  1254. 2001-005A
  1255. 26694 CW carrier plus sub-carriers at 293kHz and 297 kHz Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1256. 2227.487
  1257. SGLS 6
  1258. Skynet 4C
  1259. 1990-079A
  1260. 20776 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1261. 2227.508
  1262. SGLS 6
  1263. Skynet 4D
  1264. 1998-002A
  1265. 25134 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1266. 2227.497
  1267. SGLS 6
  1268. Skynet 4E
  1269. 1999-009B
  1270. 25639 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1271. 2227.514
  1272. SGLS 6
  1273. Skynet 4F
  1274. 2001-005B
  1275. 26695 CW carrier plus side-bands Comms: Geosynchronous orbit -
  1276. 136.800
  1277. Solrad 7B
  1278. 1965-016D
  1279. 1291 AM IRIG telemetry channels Solar radiation studies (launched 1969): Continuous transmission - (information contributed by Michael D Kenny)
  1280. 166.000
  1281. Soyuz
  1282. TMA-M
  1283.  
  1284. Telemetry transmission PCM-FM, sidebands ±128 kHz ISS Crew ferry: Digital control system, three crew seats, from 2011
  1285. 121.500
  1286. Soyuz
  1287. TMA-M
  1288.  
  1289. Morse code 'AN' recovery beacon and direction finding for recovery teams ISS Crew ferry: Digital control system, three crew seats, from 2011 - NOTE: this is an international distress frequency
  1290. 922.763
  1291. Soyuz
  1292. TMA-M
  1293.  
  1294. CW carrier. ISS Crew ferry: Part of the REGUL command and control system - there may be other elements of signals on sidebands around this frequency. Digital control system, three crew seats, from 2011
  1295. 121.750
  1296. Soyuz
  1297. TMA-M
  1298.  
  1299. 30 kHz deviation FM voice ISS Crew ferry: Digital control system, three crew seats, from 2011
  1300. 2217.500
  1301. SGLS 4
  1302. STS
  1303.  
  1304. CW carrier plus side bands carrying data ISS Crew/payload transport: Integrated voice and data on SGLS Channel 4 - transmitter operates almost continuously while the payload bay doors are open, also transmitted at 259.7 MHz, 1981-2011
  1305. 259.700
  1306. STS
  1307.  
  1308. AM voice ISS Crew/payload transport: Detected over Europe occasionally prior to Shuttle re-entry from ISS operations, and with voice during the orbital injection phase from Kennedy SC to Europe - also transmitted at 2217.500 MHz, 1981-2011
  1309. 145.990
  1310. Suitsat
  1311. 2005-035C
  1312. 28933 NFM - extremely weak Amateur radio experiment - life expired Orlan spacesuit equipped with a radio transmitter and released from ISS during a crew EVA: Voice recording + SSTV image - the low power was due to a failed amplifier - Released from ISS 2006 Feb 3 and battery exhausted 2006 Feb 18
  1313. 2207.130
  1314. Telecom 2C
  1315. 1995-067A
  1316. 23730 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1317. 2205.328
  1318. Telecom 2D
  1319. 1996-044B
  1320. 24209 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1321. 2232.215
  1322. Tiangong 1
  1323. 2011-053A
  1324. 37820 - Experimental space laboratory: Frequency reported by Richard Flagg, Hawaii. Continuous transmission. Also transmits 2250.720 MHz.
  1325. 2250.720
  1326. Tiangong 1
  1327. 2011-053A
  1328. 37820 - Experimental space laboratory: Frequency reported by Richard Flagg, Hawaii. Continuous transmission. Also transmits 2232.215 MHz.
  1329. 137.500
  1330. TIROS-N
  1331. 1978-096A
  1332. 11060 CW - carrier only Meteorological imaging: Inactive satellite but reportedly transmitting
  1333. 136.235
  1334. TIROS 10
  1335. 1965-051A
  1336. 1430 AM - 1.3 kHz tone Meteorology: Payload now inactive, radio transmission is not continuous - (information contributed by Michael D Kenny)
  1337. 400.000
  1338. Tsikada
  1339.  
  1340. CW - Doppler tracking beacon Navigation - plus Search and Rescue monitoring: Coherent transmission at 150.000 MHz - no longer active (see 150 MHz note)
  1341. 150.000
  1342. Tsikada
  1343.  
  1344. FM time and position information - sidebands at 3 kHz, 5 kHz and 7 kHz Navigation - plus Search and Rescue monitoring: Several satellites - the system is no longer operational, has been silent since 2003 November 26 - Coherent transmission at 400.000 MHz
  1345. 2247.478
  1346. SGLS 10
  1347. TSX-5
  1348. 2000-030A
  1349. 26374 CW carrier Experiments in advanced space technologies: Frequency is unstable, noted as high as 2247.512 MHz, came back on air 2009 November
  1350. 150.012
  1351. Unknown
  1352.  
  1353. 'Wandering' CW Unidentified satellite: Satellite in GEO, possibly graveyard orbit, also transmits 400.032 MHz
  1354. 400.032
  1355. Unknown
  1356.  
  1357. 'Wandering' CW Unidentified satellite: Satellite in GEO, possibly graveyard orbit, also transmits 150.012 MHz
  1358. 2242.493
  1359. SGLS 9
  1360. USA 8
  1361. 1985-010B
  1362. 15543 CW carrier plus side-bands Probably signals intelligence gathering, from geosynchronous orbit: Frequency information from Greg Roberts
  1363. 2242.515
  1364. SGLS 9
  1365. USA 21
  1366. 1987-015A
  1367. 17506 CW carrier, oscillates in frequency due to satellite spinning at 4.6s per rev US mult--tasking intelligence-gathering and communications satellite: Identification very tentative - highly eccentric orbit, non-operational, the signal oscillation is probably due to the originally de-spun aerial platform having matched rotation with the satellite body, probably an SDS-1 satellite (either F4 or F6) - listed in classfd.tle as 90004
  1368. 2202.507
  1369. SGLS 1
  1370. USA 32
  1371. 1988-078A
  1372. 19460 CW carrier plus side-bands Electronic intelligence gathering: Also transmits at 2282.5 MHz but transmissions at the two frequencies are not simultaneous
  1373. 2282.507
  1374. SGLS 17
  1375. USA 32
  1376. 1988-078A
  1377. 19460 CW carrier plus side-bands Electronic intelligence gathering: Observed to switch on and off and does not transmit every rev - at least while over Europe, also transmits 2202.5 MHz but transmissions at the two frequencies are not simultaneous
  1378. 2242.500
  1379. SGLS 9
  1380. USA 40
  1381. 1989-061B
  1382. 20167 CW carrier, oscillates in frequency due to satellite spinning at 5.2s per rev US mult--tasking intelligence-gathering and communications satellite: Tentative identification of satellite with received signals - non-operational but still transmitting, the signal oscillation is probably due to the originally de-spun aerial platform having matched rotation with the satellite body - identified as 90020 in classfd.tle
  1383. 2262.493
  1384. SGLS 13
  1385. USA 46
  1386. 1989-077A
  1387. 20253 PSK with sub-carrier, 1024 kHz Comms: Frequency Information contributed by the late Ivan Artner
  1388. 2242.496
  1389. SGLS 9
  1390. USA 67
  1391. 1990-097B
  1392. 20963 PSK with sub-carrier, 1024 kHz Multi-tasking military satellite near 75° east longitude: Originally GEO but the orbit has evolved to an inclination of 15° and is slightly elliptical so reception varies according to the sub-satellite latitude - a study by Ivan Artner 2006 March showed that the transmitter responds to eclipse periods by becoming intermittent while out of direct sunlight, indicating that the batteries are not charging properly from the solar cells
  1393. 2222.508
  1394. SGLS 5
  1395. USA 69
  1396. 1991-017A
  1397. 21147 CW carrier plus side-bands Radar imaging reconnaissance: Frequency Information originally contributed by the late Ivan Artner - later confirmed by other observers
  1398. 2232.511
  1399. SGLS 7
  1400. USA 75
  1401. 1991-080B
  1402. 21805 FM wide-bandwidth data Geosynchronous missile early warning at 38° west longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
  1403. 2237.496
  1404. SGLS 8
  1405. USA 75
  1406. 1991-080B
  1407. 21805 CW carrier plus side-bands Geosynchronous missile early warning at 38° west longitude: Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
  1408. 250.150
  1409. USA 76
  1410. 1991-076D
  1411. 21808 CW carrier detectable at 250.158 MHz then a series weaker carriers up and down from this frequency at 9.6 kHz intervals between approximate limits of 250.0 and 250.25 MHz US Military ocean surveillance: Navy Ocean Surveillance System, transmission is probably from a secondary payload - Transmission intermittent - First reported 2005 September then went into a period of silence - (the listed satellite is one of a cluster)
  1412. 2277.500
  1413. SGLS 16
  1414. USA 78
  1415. 1992-006A
  1416. 21873 CW carrier plus side-bands Comms: Defunct satellite in geostationary drift orbit - Frequency Information contributed by the late Ivan Artner
  1417. 258.150
  1418. USA 81
  1419. 1992-023A
  1420. 21949 AM - data plus modulated tones at 4.8 and 9.6 kHz Electronic intelligence gathering: European observations indicates that it is switched on and off on command from ground stations in Italy and Spain - also transmits at 2202.5 MHz and 2257.53 MHz, no longer active
  1421. 2257.530
  1422. SGLS 12
  1423. USA 81
  1424. 1992-023A
  1425. 21949 CW carrier plus side-bands Electronic intelligence gathering: Also transmits at 2202.5 MHz and 258.150 MHz, , frequency may be active intermittently
  1426. 2202.513
  1427. SGLS 1
  1428. USA 81
  1429. 1992-023A
  1430. 21949 CW carrier plus side-bands Electronic intelligence gathering: Also transmits at 2257.530 MHz, thought to be no longer active but detected early 2011
  1431. 2242.500
  1432. SGLS 9
  1433. USA 89
  1434. 1992-086B
  1435. 22518 CW carrier plus side-bands US mult--tasking intelligence-gathering and communications satellite, now deactivated: During 2006, Ivan Artner tracked a spinning satellite in HEO, the times did not fit known satellites in that type of orbit - it has been tentatively identified as 90026 (last observed in 2004) but transmissions ceased during the first quarter of 2007 before an orbit could be determined, the identification of it as USA-89 is also tentative
  1436. 2252.490
  1437. SGLS 11
  1438. USA 95
  1439. 1993-056A
  1440. 22787 CW carrier plus side-bands Comms: Frequency Information contributed by the late Ivan Artner
  1441. 2257.512
  1442. SGLS 12
  1443. USA 97
  1444. 1993-074A
  1445. 22915 CW carrier plus side-bands Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1446. 243.825
  1447. USA 99
  1448. 1994-009A
  1449. 22988 Spread spectrum signal - +/- 64 kHz from centre frequency Comms: Tentative identification (may be more than one satellite) in geosynchronous orbit, can be heard with relatively simple receiver/antenna setup - in CW mode, it sounds like trickling water!
  1450. 2262.509
  1451. SGLS 13
  1452. USA 99
  1453. 1994-009A
  1454. 22988 CW carrier plus side-bands Comms: Geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1455. 2232.496
  1456. SGLS 7
  1457. USA 105
  1458. 1994-054A
  1459. 23223 CW carrier plus side-bands Multi-tasking military satellite at 27°.5 west longitude: Geosynchonous orbit - Frequency Information contributed by the late Ivan Artner
  1460. 2277.500
  1461. SGLS 16
  1462. USA 105
  1463. 1994-054A
  1464. 23223 CW carrier plus side-bands Multi-tasking military satellite at 27°.5 west longitude: Frequency Information contributed by the late Ivan Artner
  1465. 2252.500
  1466. SGLS 11
  1467. USA 109
  1468. 1995-015A
  1469. 23533 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program, - Frequency Information contributed by the late Ivan Artner
  1470. 2237.515
  1471. SGLS 8
  1472. USA 109
  1473. 1995-015A
  1474. 23533 CW + side-bands Military meteorological satellite: Defense Meteorological Satellite Program
  1475. 2242.485
  1476. SGLS 9
  1477. USA 116
  1478. 1995-066A
  1479. 23728 CW carrier + sidebands Digital transmission, multi-tasking reconnaissance satellite: Identified from a single radio observation (early 2008) which is not normally sufficient. However, there is significant circumstantial evidence that the identification is correct.
  1480.  
  1481.  
  1482.  
  1483. No longer in orbit
  1484. 2232.495
  1485. SGLS 7
  1486. USA 118
  1487. 1996-026A
  1488. 23855 CW carrier plus side-bands Multi-tasking military satellite at 13° west longitude?: Geosynchonous orbit - Frequency Information contributed by the late Ivan Artner
  1489. 250.158
  1490. USA 121
  1491. 1996-029D
  1492. 23862 AM - 4.8 kHz data tone US Military ocean surveillance: Navy Ocean Surveillance System, transmission is probably from a secondary payload and is on for extended periods - no reports of any switch on/off activity - (the listed satellite is one of a cluster)
  1493. 243.695
  1494. USA 125
  1495. 1996-038A
  1496. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 1, no longer transmitting.
  1497. 243.705
  1498. USA 125
  1499. 1996-038A
  1500. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 2, no longer transmitting.
  1501. 243.710
  1502. USA 125
  1503. 1996-038A
  1504. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 3, no longer transmitting.
  1505. 243.715
  1506. USA 125
  1507. 1996-038A
  1508. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 4, no longer transmitting.
  1509. 243.720
  1510. USA 125
  1511. 1996-038A
  1512. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 5, no longer transmitting.
  1513. 243.725
  1514. USA 125
  1515. 1996-038A
  1516. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 6, no longer transmitting.
  1517. 243.730
  1518. USA 125
  1519. 1996-038A
  1520. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 7, no longer transmitting.
  1521. 243.735
  1522. USA 125
  1523. 1996-038A
  1524. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 8, no longer transmitting.
  1525. 243.740
  1526. USA 125
  1527. 1996-038A
  1528. 23945 Channel usually occupied by an unmodulated carrier US comms and intelligence gathering: AFSATCOM Channel 9, no longer transmitting.
  1529. 243.745
  1530. USA 125
  1531. 1996-038A
  1532. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 10, no longer transmitting.
  1533. 243.750
  1534. USA 125
  1535. 1996-038A
  1536. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 11, no longer transmitting.
  1537. 243.760
  1538. USA 125
  1539. 1996-038A
  1540. 23945 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 12, no longer transmitting.
  1541. 2242.498
  1542. SGLS 9
  1543. USA 125
  1544. 1996-038A
  1545. 23945 CW carrier plus side-bands US comms and intelligence gathering: Formerly part of the operational constellation of three SDS satellites in highly eccentric orbit (HEO) - Also transmitted AFSATCOM signal near 243.7 MHz. The S-band transmission from USA-125, an SDS-2 satellite, was at a lower power than the SDS-3 satellites. Ceased to transmit around 2010 Aug 31 when either the transmitter was switched off, or the satellite was guided to a destructive re-entry.
  1546. 2252.493
  1547. SGLS 11
  1548. USA 127
  1549. 1996-042A
  1550. 23967 PSK with sub-carrier, 1.7 MHz Comms: Frequency Information contributed by the late Ivan Artner
  1551. 2242.485
  1552. SGLS 9
  1553. USA 129
  1554. 1996-072A
  1555. 24680 CW carrier plus side-bands Imaging reconnaissance: Possible small error in the frequency measurement
  1556. 2237.500
  1557. SGLS 8
  1558. USA 131
  1559. 1997-012A
  1560. 24753 CW + side-bands Military meteorological satellite$: Defense Meteorological Satellite Program
  1561. 2222.502
  1562. SGLS 5
  1563. USA 133
  1564. 1997-064A
  1565. 25017 CW carrier plus side-bands Radar imaging reconnaissance: Frequency Information contributed by the late Ivan Artner
  1566. 243.695
  1567. USA 137
  1568. 1998-005A
  1569. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 1, no longer transmitting.
  1570. 243.705
  1571. USA 137
  1572. 1998-005A
  1573. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 2, no longer transmitting.
  1574. 243.710
  1575. USA 137
  1576. 1998-005A
  1577. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 3, no longer transmitting.
  1578. 243.715
  1579. USA 137
  1580. 1998-005A
  1581. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 4, no longer transmitting.
  1582. 243.720
  1583. USA 137
  1584. 1998-005A
  1585. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 5, no longer transmitting.
  1586. 243.725
  1587. USA 137
  1588. 1998-005A
  1589. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 6, no longer transmitting.
  1590. 243.730
  1591. USA 137
  1592. 1998-005A
  1593. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 7, no longer transmitting.
  1594. 243.735
  1595. USA 137
  1596. 1998-005A
  1597. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 8, no longer transmitting.
  1598. 243.740
  1599. USA 137
  1600. 1998-005A
  1601. 25148 Channel usually occupied by an unmodulated carrier US comms and intelligence gathering: AFSATCOM Channel 9, no longer transmitting.
  1602. 243.745
  1603. USA 137
  1604. 1998-005A
  1605. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 10, no longer transmitting.
  1606. 243.750
  1607. USA 137
  1608. 1998-005A
  1609. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 11, no longer transmitting.
  1610. 243.760
  1611. USA 137
  1612. 1998-005A
  1613. 25148 CW - RTTY-style data US comms and intelligence gathering: AFSATCOM Channel 12, no longer transmitting.
  1614. 2242.495
  1615. SGLS 9
  1616. USA 137
  1617. 1998-005A
  1618. 25148 CW carrier plus side-bands US comms and intelligence gathering: Part of a constellation of three satellites in highly eccentric orbit (HEO), switches to low power when over the southern hemisphere - formerly transmitted AFSATCOM signal near 243.7 MHz. Reported still active 2013 May. Lost to visual observers because of changes brought about gravity effects and air drag on the eccentric orbit.
  1619. 2237.495
  1620. SGLS 8
  1621. USA 142
  1622. 1999-017A
  1623. 25669 CW carrier plus side-bands Missile early warning: Defense Support Program, suffered mission failure, satellite stranded in geosynchronous transfer orbit - Frequency Information contributed by the late Ivan Artner
  1624. 2252.490
  1625. SGLS 11
  1626. USA 146
  1627. 1999-063A
  1628. 25967 PSK with sub-carrier, 1.7 MHz Comms: Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F11
  1629. 150.012
  1630. USA 147
  1631. 1999-067A
  1632. 25991 CW - Doppler tracking beacon Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.535 MHz, 2237.5 MHz and 2252.5 MHz, and 400.032 MHz - Post-launch testing revealed interference with other equipment from the 150/400 MHz transmitters so they remained inactive (apart from further testing) until 2006 Aug 14
  1633. 400.032
  1634. USA 147
  1635. 1999-067A
  1636. 25991 CW - Doppler tracking beacon Military meteorological satellite: Defense Meteorological Satellite Program - also transmits at 2207.535 MHz, 2237.5 MHz, and 150.012 MHz - Post-launch testing revealed interference with other equipment from the 150/400 MHz transmitters so they remained inactive (apart from further testing) until 2006 Aug 14 .
  1637. 2237.517
  1638. SGLS 8
  1639. USA 147
  1640. 1999-067A
  1641. 25991 CW - wide sweeping carrier Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.535 MHz, 2252.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies)
  1642. 2252.499
  1643. SGLS 11
  1644. USA 147
  1645. 1999-067A
  1646. 25991 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.535 MHz, 2237.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies)
  1647. 2207.535
  1648. SGLS 2
  1649. USA 147
  1650. 1999-067A
  1651. 25991 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2252.5 MHz, 150.012 MHz and 400.032 MHz (the last two are the RADCAL frequencies)
  1652. 2232.498
  1653. SGLS 7
  1654. USA 149
  1655. 2000-024A
  1656. 26356 FM wide-bandwidth data Geosynchronous missile early warning at 8°.5 east longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
  1657. 2237.480
  1658. SGLS 8
  1659. USA 149
  1660. 2000-024A
  1661. 26356 PSK with sub-carrier, 1024 kHz Geosynchronous missile early warning at 8°.5 east longitude: Defense Support Program - Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
  1662. 2222.476
  1663. SGLS 5
  1664. USA 152
  1665. 2000-047A
  1666. 26473 CW carrier plus side-bands Military radar reconnaissance satellite: -
  1667. 2257.508
  1668. SGLS 12
  1669. USA 153
  1670. 2000-065A
  1671. 26575 PSK with sub-carrier, 1024 kHz Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1672. 251.325
  1673. USA 155
  1674. 2000-080A
  1675. 26635 AM - 4.8 kHz data tone US intelligence-related satellite near 10° west longitude: One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 252.675 MHz, 258.775 MHz, 268.6755 MHz and 2242.486 MHz. No longer operational.
  1676. 268.675
  1677. USA 155
  1678. 2000-080A
  1679. 26635 AM - 4.8 kHz data tone US intelligence-related satellite near 10° west longitude: One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 251.325 MHz, 252.675 MHz, 258.775 MHz and 2242.486 MHz. No longer operational.
  1680. 2242.486
  1681. SGLS 9
  1682. USA 155
  1683. 2000-080A
  1684. 26635 PSK with sub-carrier, 1024 kHz US intelligence-related satellite near 10° west longitude: Geosynchronous orbit, frequency variable according to onboard power available - increases significantly at times of eclipse. Also transmitted at 251.325 MHz, 252.675, 258.775 and 268.775 MHz. No longer operational.
  1685. 252.675
  1686. USA 155
  1687. 2000-080A
  1688. 26635 AM - high speed (19.2 kb/s?) data transmission US intelligence-related satellite near 10° west longitude: Transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous - Also transmits at 251.325 MHz, 258.775 MHz, 268.675 MHz and 2242.486 MHz. No longer operational.
  1689. 258.775
  1690. USA 155
  1691. 2000-080A
  1692. 26635 AM - 4.8 kHz data tone US intelligence-related satellite near 10° west longitude: One of a triplet of similar of transmissions from a secondary payload on a US classified satellite in GEO, signal appears to be continuous and is similar to ones from USA-179 - Also transmits at 251.325 MHz, 252.675 MHz, 268.675 MHz and 2242.486 MHz. No longer operational.
  1693. 2232.497
  1694. SGLS 7
  1695. USA 159
  1696. 2001-033A
  1697. 26880 FM wide-bandwidth data Geosynchronous missile early warning at 70° east longitude: Defense Support Program also transmits at 2237.5 MHz - Frequency Information contributed by the late Ivan Artner
  1698. 2237.499
  1699. SGLS 8
  1700. USA 159
  1701. 2001-033A
  1702. 26880 PSK with sub-carrier, 1024 kHz Geosynchronous missile early warning at 70° east longitude: Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
  1703. 2277.500
  1704. SGLS 16
  1705. USA 160
  1706. p/l 1
  1707. 2001-040A
  1708. 26905 CW carrier plus side-bands Ocean SIGINT: Navy Ocean Surveillance System - Frequency Information contributed by the late Ivan Artner, also transmits at 2232.5 MHz
  1709. 2232.495
  1710. SGLS 7
  1711. USA 160
  1712. p/l 1
  1713. 2001-040A
  1714. 26905 CW carrier plus side-bands Ocean SIGINT: Also reported to transmit 2277.5 MHz
  1715. 2242.485
  1716. SGLS 9
  1717. USA 161
  1718. 2001-044A
  1719. 26934 CW carrier + sidebands Digital transmission, multi-tasking reconnaissance satellite: -
  1720. 250.075
  1721. USA 162
  1722. 2001-046A
  1723. 26948 AM - 4.8 kHz data tone US intelligence-related satellite near 144° west longitude, possibly including communications: One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 256.475, 263.225, 267.550 MHz and 2242.5 MHz
  1724. 263.225
  1725. USA 162
  1726. 2001-046A
  1727. 26948 AM - high speed (19.2 kb/s?) data transmission US intelligence-related satellite near 144° west longitude, possibly including communications: Reported frequency for a satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075 MHz,256.475, 267.550 MHz and 2242.5 MHz
  1728. 267.550
  1729. USA 162
  1730. 2001-046A
  1731. 26948 AM - 4.8 kHz data tone US intelligence-related satellite near 144° west longitude, possibly including communications: One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075 MHz, 256.475 MHz, 263.225MHz and 2242.5 MHz
  1732. 2242.500
  1733. SGLS 9
  1734. USA 162
  1735. 2001-046A
  1736. 26948 CW carrier (plus side-bands?) US intelligence-related satellite near 144° west longitude, possibly including communications: Reported frequency for satellite in geosynchronous orbit - also reported to transmit at 250.075 MHz, 256.475, 263.225 and 267.550 MHz
  1737. 256.475
  1738. USA 162
  1739. 2001-046A
  1740. 26948 AM - 4.8 kHz data tone US intelligence-related satellite near 144° west longitude, possibly including communications: One of a triplet of reported frequencies carrying similar signals from satellite in geosynchronous orbit, exact frequency not known - also reported to transmit at 250.075, 263.225, 267.550 MHz and 2242.5 MHz
  1741. 2262.507
  1742. SGLS 13
  1743. USA 164
  1744. 2002-001A
  1745. 27168 CW carrier plus side-bands Comms: Also transmits 2267.513 MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1746. 2267.513
  1747. SGLS 14
  1748. USA 164
  1749. 2002-001A
  1750. 27168 CW carrier plus side-bands Comms: Occasional transmission - Also transmits 2262.507 MHz MHz, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1751. 2257.511
  1752. SGLS 12
  1753. USA 167
  1754. 2003-008A
  1755. 27691 CW carrier plus side-bands Comms: Defense Satellite Communications System, geosynchronous orbit - Frequency Information contributed by the late Ivan Artner
  1756. 2222.481
  1757. SGLS 5
  1758. USA 172
  1759. 2003-048A
  1760. 28054 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.5, MHz, 2237.5 MHz and 2247.5 MHz
  1761. 2237.512
  1762. SGLS 8
  1763. USA 172
  1764. 2003-048A
  1765. 28054 CW + side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2207.5 MHz, 2222.473 MHz and 2247.415 MHz
  1766. 2207.510
  1767. SGLS 2
  1768. USA 172
  1769. 2003-048A
  1770. 28054 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz, 2237.5 MHz and 2247.5 MHz
  1771. 2222.500
  1772. SGLS 5
  1773. USA 173
  1774. p/l 1
  1775. 2003-054A
  1776. 28095 CW carrier plus side-bands Ocean SIGINT: Navy Ocean Surveillance System - Also transmits at 2232.5 MHz. Frequency Information contributed by the late Ivan Artner
  1777. 2232.498
  1778. SGLS 7
  1779. USA 173
  1780. p/l 1
  1781. 2003-054A
  1782. 28095 CW carrier plus side-bands Ocean SIGINT: Transmission may be from 28097 (NOSS 3-2 follower). Also reported to transmit at 2222.5 MHz
  1783. 2262.499
  1784. SGLS 13
  1785. USA 174
  1786. 2003-057A
  1787. 28117 PSK with sub-carrier, 1.7 MHz Comms: Frequency Information contributed by the late Ivan Artner - co-located so this may be UFO-F10
  1788. 251.700
  1789. USA 179
  1790. 2004-034A
  1791. 28384 AM - 4.8 kHz data tone US intelligence-related satellite: One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-198 - Prior to 2008 Mar 14, USA-179 was operating alone and was providing near 8 hours' coverage per pass at this frequency - Also transmits at 256.375 MHz and 2242.50 MHz
  1792. 2242.503
  1793. SGLS 9
  1794. USA 179
  1795. 2004-034A
  1796. 28384 CW carrier plus side-bands - strong US intelligence-related satellite: Part of a constellation of three satellites in highly eccentric orbit (HEO), switches to low power when over the southern hemisphere - Also transmits at 251.700 MHz and 256.375 MHz
  1797. 256.375
  1798. USA 179
  1799. 2004-034A
  1800. 28384 AM - 4.8 kHz data tone US intelligence-related satellite: One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-198 - Prior to 2008 Mar 14, USA-179 was operating alone and was providing near 8 hours' coverage per pass at this frequency - Also transmits at 251.700 MHz and 2242.50 MHz
  1801. 2222.500
  1802. SGLS 5
  1803. USA 181
  1804. p/l 1
  1805. 2005-004A
  1806. 28537 CW carrier plus side-bands Navy Ocean Surveillance System SIGINT: Navy Ocean Surveillance System - also transmits at 2232.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner
  1807. 2232.500
  1808. SGLS 7
  1809. USA 181
  1810. p/l 1
  1811. 2005-004A
  1812. 28537 CW carrier plus side-bands Navy Ocean Surveillance System SIGINT: Also reported to transmit at 2222.5 MHz and 2277.5 MHz - latter frequency Information contributed by the late Ivan Artner
  1813. 2277.500
  1814. SGLS 16
  1815. USA 181
  1816. p/l 1
  1817. 2005-004A
  1818. 28537 CW carrier plus side-bands Navy Ocean Surveillance System SIGINT: Navy Ocean Surveillance System, also transmits at 2222.5 MHz and 2232.5 MHz
  1819. 2242.505
  1820. SGLS 9
  1821. USA 186
  1822. 2005-042A
  1823. 28888 CW carrier + sidebands Reconnaissance satellite: -
  1824. 2232.517
  1825. SGLS 7
  1826. USA 184
  1827. 2006-027A
  1828. 29249 CW carrier plus side-bands : Also transmits at 2277.5 MHz - Frequency Information contributed by the late Ivan Artner
  1829. 2277.520
  1830. SGLS 16
  1831. USA 184
  1832. 2006-027A
  1833. 29249 CW carrier plus side-bands : Also transmits at 2232.5 MHz - Frequency Information contributed by the late Ivan Artner
  1834. 2222.497
  1835. SGLS 5
  1836. USA 191
  1837. 2006-050A
  1838. 29522 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2237.515 MHz and (according to observations by the late Ivan Artner) at 2249.415 MHz
  1839. 2237.514
  1840. SGLS 8
  1841. USA 191
  1842. 2006-050A
  1843. 29522 CW Military meteorological satellite: Defense Meteorological Satellite Program - Also transmits at 2222.5 MHz and 2247.415 MHz
  1844. 2249.500
  1845. USA 193
  1846. 2006-057A
  1847. 29651 CW carrier plus side-bands US intelligence-related satellite: Satellite failed soon after launch 2006 December - no longer transmitting Frequency Information contributed by the late Ivan Artner
  1848. 2232.498
  1849. SGLS 7
  1850. USA 194
  1851. p/l 1
  1852. 2007-027A
  1853. 31701 CW carrier + side bands Navy Ocean Surveillance System - ocean SIGINT: Transmission may be from the NOSS 3-4 follower
  1854. 2232.504
  1855. SGLS 7
  1856. USA 197
  1857. 2007-054A
  1858. 32287 CW carrier plus side-bands
  1859. Geosynchronous missile early warning: Defense Support Program - Frequency Information contributed by Greg Roberts
  1860.  
  1861. 251.275
  1862. USA 198
  1863. 2007-060A
  1864. 32378 AM - 4.8 kHz data tone plus various test modes Intelligence-related satellite, possibly including communications: One of a pair of transmissions from a secondary payload on US classified satellite in HEO used during the test phase of the satellite up until 2008 March 13 - on March 14, USA-198 switched to its operational frequencies at 251.700 MHz and 256.375 MHz, test transmission also at 258.800 MHz, plus transmitter at 2242.50 MHz
  1865. 2242.504
  1866. SGLS 9
  1867. USA 198
  1868. 2007-060A
  1869. 32378 CW carrier plus side-bands - strong Intelligence-related satellite, possibly including communications: Part of a constellation of three satellites in highly eccentric orbit (HEO), lanched 2007 Dec 10 as a replacement for USA-125, also transmits at 251.700 MHz and 256.375 MHz, and used 251.275 and 258.800 MHz during the orbital test phase up to 2008 Mar 13
  1870.  
  1871.  
  1872.  
  1873. Frequency discovered independently by Bob Christy and Sven Grahn about 20 minutes after launch.
  1874. 251.700
  1875. USA 198
  1876. 2007-060A
  1877. 32378 AM - 4.8 kHz data tone Intelligence-related satellite, possibly including communications: One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-179 - Also transmits at 256.375 MHz and 2242.50 MHz
  1878. 256.375
  1879. USA 198
  1880. 2007-060A
  1881. 32378 AM - 4.8 kHz data tone Intelligence-related satellite, possibly including communications: One of a pair of transmissions from a secondary payload on US classified satellite in HEO - Switched on and off to co-ordinate coverage with USA-179 - Also transmits at 251.700 MHz and 2242.50 MHz
  1882. 258.800
  1883. USA 198
  1884. 2007-060A
  1885. 32378 AM - 4.8 kHz data tone plus various test modes Intelligence-related satellite, possibly including communications: One of a pair of transmissions from a secondary payload on US classified satellite in HEO used during the test phase of the satellite up until 2008 March 13 - on March 14, USA-198 switched to its operational frequencies at 251.700 MHz and 256.375 MHz, sharing duties with USA-179 - Test transmission also at 251.275 MHz, plus transmitter also at 2242.50 MHz
  1886. 2232.498
  1887. SGLS 16
  1888. USA 198
  1889. 2007-060A
  1890. 32378 CW carrier plus side-bands Intelligence-related satellite, possibly including communications: Navy Ocean Surveillance System
  1891. 2203.700
  1892. USA 205
  1893. 2009-023A
  1894. 34903 CW carrier + sidebands Development of missile sensors: Frequency not measured precisely
  1895. 2252.506
  1896. SGLS 11
  1897. USA 207
  1898. 2009-047A
  1899. 35815 CW carrier + sidebands Comms: Initial reception reported by Greg Roberts (SA) some 38 minutes after lift-off
  1900. 2247.499
  1901. SGLS 10
  1902. USA 208
  1903. 2009-052A
  1904. 35937 CW carrier plus sidebands STSS Demonstrator dual satellite mission together with USA 209 testing missile detection technology: Frequency shows variability, possibly due to internal electrical power loading. Transmission frequency sometimes locked to the uplink leading to dual Doppler effect.
  1905.  
  1906.  
  1907.  
  1908. See 2272.5 MHz for USA-209.
  1909. 2272.514
  1910. SGLS 15
  1911. USA 209
  1912. 2009-052B
  1913. 35938 CW carrier plus sidebands STSS Demonstrator dual satellite mission together with USA 208 testing missile detection technology: Frequency shows variability, possibly due to internal electrical power loading. Transmission frequency sometimes locked to the uplink leading to dual Doppler effect.
  1914.  
  1915.  
  1916.  
  1917. See 2247.5 MHz for USA-208.
  1918. 2222.487
  1919. SGLS 5
  1920. USA 210
  1921. 2009-057A
  1922. 35951 CW carrier plus side-bands Military meteorological satellite: Defense Meteorological Satellite Program
  1923. 2237.517
  1924. SGLS 8
  1925. USA 210
  1926. 2009-057A
  1927. 35951 CW carrier plus sidebands Military meteorological satellite: Strong carrier
  1928. 2262.505
  1929. SGLS 13
  1930. USA 214
  1931. 2010-039A
  1932. 36868 CW carrier, for a period after launch, the received frequency was oscillating because of Doppler shift caused by rotation Comms: Unable to reach GEO using designated thrusters so manoeuvred to GEO over a long period using its station-keeping thrusters
  1933. 2242.506
  1934. SGLS 9
  1935. USA 215
  1936. 2010-046A
  1937. 37162 CW Reconnaissance using radar: Discovered by Bob Christy immediately after launch
  1938. 400.180
  1939. USA 217
  1940. 2010-062A
  1941. 37222 Trigger pulse for ground ground-based transmitters at 16s intervals Military space technology experiments incl Store-Dump comms: Transmission from Ocean Data Telemetry Microsat Link payload to collect data from sensors on such as ocean data buoys or small, unattended ground stations. Transmits only when in range of an active sensor.
  1942. 2242.514
  1943. SGLS 9
  1944. USA 224
  1945. 2011-002A
  1946. 37348 CW carrier + sidebands Digital transmission, multi-tasking reconnaissance satellite: Discovered by Bob Christy on day of launch. Intensive radio tracking over first few days allowed good determination of the orbit for acquisition by visual observers.
  1947. 2242.504
  1948. SGLS 9
  1949. USA 227
  1950. 2011-011A
  1951. 37377 Carrier + sidebands US intelligence-related satellite near 10° west longitude: Continous transmission
  1952. 2242.506
  1953. SGLS 9
  1954. USA 234
  1955. 2012-014A
  1956. 38109 Carrier + sidebands Reconnaissance using radar:
  1957. 2212.810
  1958. Yaogan 1
  1959. 2006-015A
  1960. 29092 CW carrier (+sidebands?) Remote sensing with synthetic aperture radar, government and military: European observations tend to be on southbound passes (these occur between passes over the PRC mainland), also transmits 2295.650 MHz. No longer active - Yaogan 1 broke into several pieces 2010 Feb 4.
  1961. 2295.650
  1962. Yaogan 1
  1963. 2006-015A
  1964. 29092 CW carrier (+sidebands?) Remote sensing with synthetic aperture radar, government and military: Frequency reported 2008, also transmits 2212.810 MHz. No longer active - Yaogan 1 broke into several pieces 2010 Feb 4.
  1965. 2216.527
  1966. Yaogan 2
  1967. 2007-019A
  1968. 31490 CW carrier (+sidebands?) Optical remote sensing - military or government: -
  1969. 2212.809
  1970. Yaogan 3
  1971. 2007-055A
  1972. 32289 CW carrier (+sidebands?) Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: May not transmit on all passes - European observations are more common on southbound passes (these occur between passes over the PRC mainland), also transmits 2295.650 MHz
  1973. 2295.650
  1974. Yaogan 3
  1975. 2007-055A
  1976. 32289 CW carrier (+sidebands?) Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Frequency reported 2008, also transmits 2212.810 MHz
  1977. 2216.525
  1978. Yaogan 4
  1979. 2008-061A
  1980. 33446 CW carrier (+sidebands?) Optical remote sensing - military or government: -
  1981. 2220.476
  1982. Yaogan 5
  1983. 2008-064A
  1984. 33456 CW carrier (+sidebands?) Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Also reportedly transmits 2282.1 MHz
  1985. 2282.100
  1986. Yaogan 5
  1987. 2008-064A
  1988. 33456 CW carrier (+sidebands?) Remote sensing, possible military connection - reportedly equipped with a synthetic aperture radar: Frequency reported 2008, also transmits 2220.476 MHz
  1989. 2296.500
  1990. Yaogan 6
  1991. 2009-021A
  1992. 34839 CW carrier (+sidebands?) Digital imaging for remote sensing, government/military use: Frequency reported 2008, also transmits 2280.716 MHz
  1993. 2280.716
  1994. Yaogan 6
  1995. 2009-021A
  1996. 34839 CW carrier (+sidebands?) Digital imaging for remote sensing, government/military use: Weak, also reported at 2296.500 MHz
  1997. 2216.527
  1998. Yaogan 7
  1999. 2009-069A
  2000. 36110 CW Carrier + sidebands Optical remote sensing - military or government: -
  2001. 2266.319
  2002. Yaogan 8
  2003. 2009-072A
  2004. 36121 Weak CW Remote sensing: -
  2005. 179.951
  2006. Ziyuan
  2007. 2-01
  2008. 2000-050A
  2009. 26481 CW carrier on centre frequency plus telemetry sidebands at +/- 20 kHz- and further carriers at +/- 40 kHz Remote Sensing: Coherent transmission at 479.865 MHz. No longer transmitting.
  2010. 479.865
  2011. Ziyuan
  2012. 2-01
  2013. 2000-050A
  2014. 26481 CW - Doppler tracking beacon Remote Sensing: Coherent transmission at at 179.951 MHz. No longer transmitting.
  2015. 2207.500
  2016. Ziyuan
  2017. 2-03
  2018. 2004-044A
  2019. 28470 CW carrier + sidebands Military reconnaissance: Frequency reported 2008, also transmits at 2220.5 MHz
  2020. 2220.500
  2021. Ziyuan
  2022. 2-03
  2023. 2004-044A
  2024. 28470 CW carrier + sidebands Military reconnaissance: Frequency reported 2008, also transmits at 2207.5 MHz
  2025. 2285.525
  2026. ZP 1A2
  2027. 2010-047C
  2028. 37167 Weak CW Microelectronics studies: -
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