UHF-Satcom Audio samples - formatted in mp3 and Wav                                                                                    (11/05/2008 22:17:11 +0100)

BTW if you have any nice samples that you would like included here, please email them to sounds@uhf-satcom.com. Matthius DD1US also maintains an excellent archive of 'sounds from space', link here. Mysteryship.nl also has an excellent satcom audio archive.

There is a small table of equipment used to receive each of the following, to view it, click here.

• 7th May 2008 - Interesting downlinks from the SARSAT transponder on MSG (BrianDK recording)
• 10th April 2008 - ISS working Soyuz TMA-12 and Russian ground stations on 130.167 MHz FM, here (Nils recording)
• 9th April 2008 - Soyuz TMA-12 working Russian ground stations on 121.750 MHz FM, here and here (Nils recording)
• 8th April 2008 - Soyuz TMA-12 working Russian ground stations on 121.750 MHz FM, here, here and here (Nils recording)
• 31st March 2008 - 261.450MHz Fltsatcom-8 Wolfhound maintenance units - setting up LOS comms relay for NATO summit "Noble Endeavour" (phil recording)
• 11th March 2008 - STS-123 259.700MHz AM ascent comms here and here. (Nils recording)
• 11th March 2008 - STS-123 shuttle support comms via Fltsatcom-8 on 261.575MHz. (Nils recording)
• 20th February 2008 - STS-122 259.700MHz AM 2nd to final orbit comms, Atlantis working Houston. (pjm recording)
• 16th February 2008 - 257.700MHz IOR  Rush 15 mobile calling Rush 10. 15 mobile calling 15 base in background.(BrianDK recording)
• 7th February 2008 - A couple more STS-122 259.700MHz AM air to ground recordings, by r00t and Sinagar.
• 7th February 2008 - STS-122 259.700MHz AM air to ground comms, and shuttle support nets (Nils recording)
• 7th February 2008 - STS-122 259.700MHz AM air to ground communications from Atlantis working Houston (pjm recording)
• 2nd February 2008 - 262325MHz IOR - Bone ops calling FireBrain in the clear. (BrianDK recording)
• 31st January 2008 - 252.275MHz AOR - Sicral, Italian navy working in the clear, with stanag 4285 crypto messages. (r00t recording)
• 27th January 2008 - 255.400MHz IOR - Air traffic control perhaps from Russia, and 257.000MHz IOR - Clear comms from US forces in the middle east! (BrianDK recordings)
• 8th August 2007 - 259.700MHz AM - Space Shuttle Endeavour heard during ascent working NASA Houston.
• 8th August 2007 - 261.625MHz AOR - More radio checks and tests and here and here No call signs used! (specops recording)
• 8th August 2007 - 261.575MHz AOR - Radio checks from Wolfhound Alternate and Wolfhound Maintenance performing radio checks , also Maintenance 1 calling Maintenance 2 (specops recording)
• 7th August 2007 - 261.575MHz AOR - Wolfhound Maintenance working Wolfhound Alternate (specops recording)
• 6th August 2007 - 261.575MHz AOR - Herk 641, Herk 631, Wolfhound, Guardian 1 / 2 performing radio checks etc (pjm recording)
• 2nd August 2007 - Marisat F2 is an old C-band satellite launched in 1976, its TT&C was heard on 3945.526MHz
• 15th June 2007 - 267.050MHz AOR Bluto calling Bikini and being interrupted by pirate ops. (specops recording)
• 10th June 2007 - 261.675MHz AOR Wolfhound, Frosty CCO, Workhourse, Wizard Group, Quid13, Grim 11, Grim 21, Frequent spots and reports by an AWACS (Callsign Wizard), activity centred around Tirana, Albania. (BrianDK recording). 261675MHz seems to be a UHF Airband to Satcom repeater.
• 10th June 2007 - 261.850MHz AOR - US air to air communications in AM relayed by satellite (pjm recording)
• 8th June 2007 - STS117 259.700AM communications direct from Atantis, recording here (pjm recording)
• 8th June 2007 - 261.450MHz AOR - STS117 support units active with radio checks. Herky 621, Wolfhound, Wolfhound Rescue, Cape Osbourne all heard. Nothing heard from TAL sites, King 4 / King 5 or DoD Cape (pjm recording)
• 8th June 2007 - 261.900MHz, 261.675MHz, 261.925MHz AOR - Frosty 1, Frosty 2, Wolfhound, Frosty maintenance, Wolfhound maintenance, Frosty Control, Wizard control, Wizard Alpha, Wizard Bravo, Quid 95, Cresco 55, ASC Director, Sentry ops, Control, Frosty Control all performing an endless series of radio checks. Several units reminded that they are operating in 'clear text on a cipher net'. Traffic probably related to the G8 summit in Germany. Also about another 20 minutes of the same communications here. 'fltsatcom' in the USA recorded a large amount of clear satcom traffic on 261.625MHz from AOR, recording here.
• 7th June 2007 - 261.925MHz AOR - 'Far control', Wolfhound Lima and Farsi performing radio checks. Also DoD cape, Herky 622, Wolfhound and a number of other units preparing for the STS-117 launch. Interestingly on 261.900MHz, stanag-4285 bursts were heard, although not enough to achieve sync (pjm recording)
• 26th May 2007 - 261.800 WFM - Radio Nueva Fraternidad in Guatemala PSK bursts interfere with this recording (pjm recording)
• 24th December 2006 - 1544.5 SARSAT from METOP-A, SANTA heard doing his rounds!!!!! audio here (tnx to xBr for this recording)
• 22nd December 2006 - 259.700MHz AM - NASA lands STS116 safely at KSC! comms here (pjm recording)
• 15th December 2006 - 7393.300MHz Sicral - Relay of Indian Air Traffic Control, 252.300MHz downlink seems suppressed. (pjm recording)
• 12th December 2006 - 261.625MHz AOR - Clear comms, radio checks, american accent, recordings here and here. (pjm recording)
• 9/10th December 2006 - 252.150MHz AOR - Shuttle support net supporting the launch of STS116. Callsigns heard were: DoD Cape, Wolfden, Cape Osbourne, Herky641 and Herky651, audio here. A nice combo of STS116 UHF comms received on 259.700AM here. This recording was made with contributions from fltsatcom, blh, pjm, typhoon and geraki. We were just missing someone in the middle of the Atlantic under the ground track ;-).
• 8th December 2006 - 252.150MHz AOR - Shuttle support net including DoD Moron, Cape Osbourne, Herky 651, Herky 641, Wolfden units, here. Further communications and radio checks from these units, including a Brazilian pirate testing, here. Launch scrubbed due to wx.
• 28th November 2006 - Lots of test calls overnight on 261.625MHz AOR, audio here, Tango 1 Alpha calling Delta 0 Papa here (pjm recording)
• 25th November 2006 - Satcom pirates testing SSB via Sicral's 252.330MHz / 7393.330MHz transponder, good recording here (pjm recording)
• 24th November 2006 - Sicral UHF/X-band tpx's return, some activity from pirate operators here and here. Also Bulgarian Security company being relayed via 7408.200MHz / 267.200MHz Sicral transponder, audio here (pjm recording)
• 23rd November 2006 - 261.625MHz AOR - Swordfish calling Limelight, WindShield,  BigDuke and Stingray without much sucess (pjm recording)
• 19th November 2006 - 261.625MHz AOR - 2KO calling Big Duke and LimeLight(pjm). Also Doom99 calling Ice Palace (Tnx to fltsatcom)
• 1st November 2006 - 252.125MHz CONUS - Dog-21, aircraft 742, goggle 42 calling Hammond - thanks to 'fltsatcom' for this recording.
• 20th October 2006 - 269.950MHz AOR - Pocsag like data bursts - thanks to 'fltsatcom' for this recording.
• 24th September 2006 - Several e-mails have been received asking what the 'squeaky wheel' is, here is recording of it from Sicral on 7393.250MHz / 252.250MHz  (pjm recording)
• 21st September 2006 - Final orbit of STS115 - comms heard on 259.700MHZ AM, recording here. mysteryship.nl has a couple of excellent recordings of the shuttle, here and here
• 20th September 2006 - Soyuz comms briefly heard on 143.625MHz, short recording here Translation thanks to Spetznaz 'did u determine it? yup? well, excellent...' (pjm recording)
• 16th September 2006 - New edit of the STS115 launch comms recorded on 259.700MHz AM. The first half of the recording is credited to 'blh' from Atlanta, USA and the second half of the recording is the same as the one below (xBr and PJM).
• 9th September 2006 - 259.700MHz AM - Direct comms from the Shuttle Shuttle Atlantis here (xBr and PJM recordings - Note due to doppler, tracking started on 259.711MHz and slowly decreased in frequency). Satcom support units suffered heavy interference from a data transmission on 261.900MHz AOR, but this stopped about 10 minutes before launch. The satcom units finally achieved good comms and supported the launch, there audio is here
• 8th September 2006 - 261.875MHz AOR - Shuttle pre-launch satcom checks, audio here. Shuttle launch scrubbed due to fuel sensor issue. (pjm recording)
• 5th September 2006 - 261.875MHz AOR up with pre Shuttle flight comm checks, audio here and here (pjm recording)
• 3rd September 2006 - Italian navy active in 258.200MHz Sicral, audio here. Callsigns include MPW, LVY, VZJ, GYR, RDC, DHY, GVY . Also Bulgarian security firm comms relayed here via 267.200MHz transponder on Sicral. (pjm recording)
• 31st August 2006 - IDR testing on 252.275MHz Sicral, audio here (pjm recording)
• 26th August 2006 - STS115 pre flight checks on 261.875MHz AOR - only a couple of test counts today, audio here (pjm recording)
• 25th August 2006 - STS115 pre flight checks on 261.875MHz AOR. Cape Osborne, DOD Cape, Herky 264, King 4 and 5, and the old favorite 'Wolfhound' all up with comms checks. Audio here and here (pjm recording)
• 17th July 2006 - STS121 pre-landing orbit comms heard on 259.700MHz AM, here (pjm recording)
• 4th July 2006 - STS121 comms as heard on 259.700MHz AM here. Another recording tnx to 'Typhoon' here. A couple of nice recordings from the guys at www.mysteryship.nl here (259.700 Discovery) and here (261.875MHz Satcom units)
• 2nd July 2006 - 261.875MHz AOR more STS121 comms, pre flight checks between the usual support units here (pjm recording)
• 1st July 2006 - STS121 pre flight checks continue on Satcom, King5, Rescue bird east, Cape Osbourne, Zaragoza, Wolf Hound all heard performing radio checks on 261.875MHz AOR, sample here and here. Mission scrubbed due to weather. Final Satcom of the day here (pjm recording)
• 30th June 2006 - Pre shuttle flight checks on 261.875MHz AOR preparing for the STS121 mission, here. Wolf hound working Cape Osbourne, Mexican, East Rescue Bird and Rescue Bird. Some more audio here. (pjm recording)
• 9th November 2005 - Satcom pirates testing voice inversion speed scrambling, audio here (pjm recording)
• 5th November 2005 - Very unusual signals on 261.775MHz AOR SSB here  (pjm recording)
• 27th July 2005 - Brazillian pirates testing voice inversion on 252.050MHz. AOR (pjm recording)
• 22nd April 2005 - Testing voice inversion on 265.450MHz  (pjm recording)
• 14th March 2005 -Clear comms on 252.050MHz from 12W satcom!!! Wearwolf calling Wolfden with radiochecks etc here and here and here and more here and yet more here  (pjm recording)
• 14th March 2005 - Waterdrops on 243.800 here. Low Speed modem on 261.575MHz.  (pjm recording)
• 2nd February 2005 - Clear comms heard on 261.875MHz - American units with test calls (tnx to hubble-earth). Also another recording of the same traffic going green on 261.875MHz. (pjm recording)
• 6th January 2005 - Portugese / Brazillian pirates using 261.709MHz from Atlantic Ocean Region (pjm recording)
• 7th January 2005 - Satcom Modem being relayed via 261.575MHz from Atlantic Ocean Region (pjm recording)
• 6th January 2005 - Radio Maria being relayed via 261.800MHz from Atlantic Ocean Region, more here (pjm recording)
• 5th Januart 2005 - Radio station relay on 261.800MHz AOR, here and here (pjm recording)
• 5th December 2001 - King 4 / King 5 and Cape Osbourne providing shuttle mission support. Direct from Shuttle comms on 259.700AM. (pjm recording)
• 4th December 2001 - Cape Radio, King 4 / King 5, Herky 603 (wrong callsign) Cape Osbourne and Braziallian pirates performing comm checks in preparation for shuttle launch. (pjm recording)
• 4th December 2001 - Brazilian pirates playing on the satellite 260.525Mhz NFM. (pjm recording)
• 26th September 2001 - Link 11 traffic via satellite 261.400Mhz (pjm recording)
• 10th August 2001 shuttle support crews King 4, King 5 and Cape Osbourne, also a couple of overs direct from the shuttle 'Discovery' on 259.700 AM Reads 'houston, discovery, here comes ET umbilical door closure' (pjm recording)
• 9th August 2001 shuttle support crews scrubbing the launch attempt. (pjm recording)
• 12th July 2001 Shuttle Support 12th July 2001 - 261.750Mhz (pjm recording)
• 1st July 2001 good recording of the shuttle support crews, King 4, King 5 and Cape Osbourne.  (pjm recording)
• Daily RATT transmissions on 265.450Mhz (pjm recording)
• High Speed data over satcom - 261.800Mhz (pjm recording)
• June 2001 Station 'Bravo' in central Europe in QSO with 'Whiskey' in South America. (pjm recording)

• 12th April 2001 shuttle mission scrub announcement to shuttle support crews via satcom (pjm recording)

• 18th July 2000 Radio Majakka from Finland being relayed via 257.600MHz AOR (xBr recording)

• 15th March 1999 IDR (Italian Navy HQ) voice+RATT (253.950 MHz NFM 24W)(xBr recording)

• 15th March 1999 Pacific Satcom samples from noel-NZ (261.800 MHz NFM 177W)[noel-NZ] Topp Rocc net, usually encrypted. Any major voice comms in the clear (unencrypted) are rare. I think it is on the UFO4 Pacific satellite, position 177W 2S. 261.8000 NORAD / AWAC TOP ROCC Net for Alaska callsigns heard on this net Topp Rocc:    NORAD ROCC, Elmendorf AFB Mountain Topp:  Cheyenne Mountain complex in Colorado Top Cover:    possible Galena AFS, Alaska Focus:  E-3B AWACS Battlestaff callsign Elmendorf AFB Camera / Moonbeam / Fanblade / Arctic Warrior / Sunday Punch / Brigem / Aircraft 7589 / Geo Derrick
  recorded March 3, 1999 at 0500z. [noel-NZ]
• 31st December 1998 Pacific SATCOM audio samples from xyz, Hi xBr: I made two wavs of some in-the-clear satcom traffic and thought you might be interested. The first one is c/s 'MOONBEAM' clg 'FANBLADE' on 30 DEC98 at 2040z with no response and gone.  The next is one of the routine checks between TOP ROCC and MOUNTAIN TOP heard in this area, recorded at 0814z on 31 DEC 98.  It is believed that TOP ROCC is the Regional Operations Control Center at Elmendorf AFB, Alaska.  Both wavs were recorded from 261.800 MHz in the narrow FM mode.
• 29 October 1998 18:00z DOD Cape wkg. KING4 KING5 (263.625 MHz NFM 24W)(xBr recording)
• 29 October 1998 inverted voice communication received 2010z on 260.525 MHz
  My first decoded result sounded like: "BEAT95 BEAT95 15.."with strong a/c background noise.
  Who is it? and where? or download the 640kb wave for further "processing" : invert2.wav (xBr recording)
• 13th July 1997 Smile FM broadcast from Manilla, and rebroadcast via satcom 269.950MHz.  Also the nation anthem of that country, heard on the same frequency. (tnx to hubble-earth)

Contributors system information.

pjm: AOR AR5000, RF-Space UHF LNA, 6 Turn helical antenna pointing to 1W, located in Southern England.
xBr: AOR AR8600, Band III/UHF Logper antenna, located in Hungary
Nils: Icom IC-R7100, SDR-Lite, 4 El. UHF-Yagi, located in Northern Germany
Brian-DK: UBC780XLT, 4El. UHF-Yagi, Located in Denmark

Note: none of these audio samples may be used for commercial purposes or used in any way unless permission in writing is obtained by the members of #hearsat on ZIRC - see legal cruft on the index page.