Space Frequencies

 

Space Shuttle & Mir Frequencies

 

Space shuttle communications have been relayed on shortwave from a number of amateur radio clubs at NASA bases. These are in single sideband (SSB), and the frequencies to look for are

WA3NAN at the
Goddard Space Flight Center in Maryland

3862
7185
14295
21395
28650 kHz

Johnson Space Center in Texas

3840
14280
21350
28495 kHz

Jet Propulsion Laboratory in California.

3840
21280 kHz

 

Here are some reported frequencies connected with the shuttlemissions:

Shortwave (SSB):

Western Test Range

5700
13218

Eastern Test Range

5190

NASA Tracking Ships

5180
5187

Launch Support Ships

11104
19303

NASA Kennedy Operations

7675

USAF Cape Radio

6837
6896
11414
11548
19640
23413

Shuttle Mission Control

11201

NASA Ascension Island tracking

20186

NASA CB Radios

27065

Military aircraft emergency frequency

243.0 MHz

Primary shuttle communications

259.7

Shuttle space suits

279.0

Primary UHF downlink

296.0

Air to ground or orbiter-to-suit

296.8

S Band (Wideband FM) via TDRS satellites:

 

NASA downlink in Mhz.

2217.5
2250.0
2287.5

Primary digital downlink

2287.5

 

North American satellite TV monitors can watch live video from the shuttle missions via NASA Select on Satcom 2R transponder 13.

A voice TV schedule update can be heard by calling American telephone number 1-202-755-1788. Missions with German astronauts may be relayed on one of the Kopernikus satellites to Europe. Space launches may also be carried on Intelsat 504 at 31.4 degrees West, on 11.133 GHz.

MIR

The former Soviet MIR space station can easily be heard with its powerful FM signals on 143.625 MHz, but this channel is now only being used over Europe, when the station is in range of the ground station in the Crimea. Funding cuts dictated that the communications ships off Sable Island, Madeira, etc., which were relaying MIR by shortwave, are no longer operational. Voice communications have also been reported on 143.42 and 142.42 MHz, as well as a beacon on 121.75 MHz. Data communications from MIR have been heard on 166.130 (or possibly 165.875) MHz. Other frequencies reported from the former Soviet space program are:

Soyuz T-11 space vehicle telemetry

20008 kHz

Soyuz T-11 voice communications

142.423 MHz

Soyuz TM-3 and TM-4

121.750

Progress 7 supply ship

166.000

 

When out of range of the CIS ground stations, MIR communications are now often relayed through the "Luch" or "Altair" transponder systems of CIS geostationary satellites. The Soviet satellite tracking network is called SDRN, the Satellite Data Relay Network.

Downlinks are on 10.8, 11.3, and 13.7 GHz. The relay most used over Europe is via the satellite at 16 degrees West listed as ZSSRT-2 (an abbreviation of the Russian words "Zemlya S Sputnik Radio Translator", meaning "Western geostationary satellite transponder"). There is also an eastern relay at 167 degrees East.

The SECAM color signals from MIR are listed at 10.835 GHz, but are actually carried at 10.829 GHz (unfortunately just below the range of most satellite TVRO receivers). Monitors can look for the satellite by tuning in to the strong data signals on 11.375 GHz, which can often be seen as flashing lines on the screen.

Voice signals from MIR can be heard near the TV frequency, on a 300 kHz SSB subcarrier, but only when no TV signals are being relayed. MIR video has also been reported on the Ghorizont at 11 degrees West, on 11.525 GHz. The Molniya satellites are also used for relaying manned space voice communications.