FM
Voce - ITU Regione 1: Europa - Africa - Nord Asia
Downlink
145.800
Uplink
145.200
FM
VOICE ITU Regioni 2 e3: North and South
America-Caribbean-Greenland-Australia-South Asia
Downlink
145.800
Uplink
144.490
FM
VOICE Repeater (Worldwide)
Downlink
145.800
Uplink
437.800
AX.25
1200 Bd AFSK Packet Radio (Worldwide)
Downlink
145.825
Uplink
145.825
UHF
Simplex (rarely used)
Downlink
437.550
Uplink
437.550
Other
Frequencies:
121.75
FM
Voice
downlink from Soyuz-TM during free flight operations, the frequency
also carries ranging information from the TORU
remote
control docking system, and carries a recovery beacon signal during
Soyuz descent (detectable over near-east and south- west
Asia)
130.167
AM
VHF-2
downlink from Zarya - carries
voice (Russian and English) plus packet data, sometimes instead of
VHF-1 (during shuttle- docked
periods)
and sometimes in parallel with VHF-1
143.625
FM
VHF-1
downlink, the main Russian comms channel - content
similar to VHF-2 - works
with Russian ground stations plus White Sands
AFB,
Dryden Flight Center and Wallops Island in the US
166.000
AM
Telemetry
during orbital operations of Soyuz-TM and Progress M-1 vehicles, also
occasional transmissions from ISS
- probably
from a docked Soyuz or Progress ferry, it can be heard as a buzz with
two distinct peaks at 166.125 and 165.875 MHz
259.700
AM
Voice
from Space Shuttle during ascent and descent - reported
as detectable over east coast US then from Europe about 20
minutes
after
lift-off, generally silent at other times but has been detected over
Europe on the descent orbit
632.000
634.000 AM
Telemetry
from Zarya module, similar to the 166 MHz transmission with peaks at
+/- 125
kHz - transmissions
not very frequent and
seem
to be confined to 634 MHz - most
likely on passes over eastern Europe - watch
out for the Doppler shift at this frequency
- it
can make the signal appear up to 15 kHz off-frequency
628.000
630.000 AM
Telemetry
from Zvezda module, transmissions are similar to, and more frequent
than those from Zarya and are on command from Moscow
- the
two transmitters appear to operate in parallel
922.76
CW
Beacon
from Soyuz-TM and Progress M1 and from the Russian ISS modules
- tends
to be received in parallel with the 166 MHz or
620-630
MHz transmissions, beware of the Doppler, it ranges +/- 23
kHz from the centre frequency
2265.0
Digital
S-Band
Single Access Telementry Downlink
15003.4
Digital
Ku-Band
Single Access Downlink. Used for video and large file tranfers.