SATELLITE INTELLIGENCE
ISS
Frequency and transmitter information from the connected satellite dataset, with direct routes to receiving equipment and related radio tools.
NORAD25544
Statusin orbit
Transmitters50
SourceSatNOGS
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Transmitters and frequencies
Description
Uplink
Downlink
Mode
Status
Baud
Suit 1
—
121.100000 MHz
FM
active
—
Suit 2
—
121.275000 MHz
FM
active
—
Soyuz / Orlan space suit
—
121.750000 MHz
FM
active
—
VHF-2 Soyuz Communication - FMN
—
130.167000 MHz
FMN
active
—
Mystery transmitter 137.6257MHz
—
137.625700 MHz
CW
active
—
Suit 3
—
139.208000 MHz
FMN
active
—
VHF-1 Soyuz Communication - FMN
—
143.625000 MHz
FMN
active
—
TEMP Off-Frequency SSTV
—
145.480000 MHz
SSTV
inactive
—
Mode U/V FM Voice
437.800000 MHz
145.800000 MHz
FM
inactive
—
Mode V/V FM (crew R2+3)
144.490000 MHz
145.800000 MHz
FM
active
—
Mode V/V FM (crew R1)
145.200000 MHz
145.800000 MHz
FM
active
—
Mode V Imaging
—
145.800000 MHz
SSTV
active
0.000
Mode V APRS
145.825000 MHz
145.825000 MHz
AFSK
active
1200.000
Mode V/V APRS
145.825000 MHz
145.825000 MHz
AFSK
inactive
1200.000
Soyuz-TM and Progress M-1 TLM
—
166.000000 MHz
FM
active
—
CUCU (SpaceX COTS UHF Communication Unit)
—
400.500000 MHz
BPSK
active
1536.000
EVA/WVS
—
400.575000 MHz
FM
active
—
EMU (695000)
—
414.200000 MHz
FSK
active
—
EMU Alt
—
417.100000 MHz
FSK
active
695.000
Mode U - Possibly Voice
—
435.400000 MHz
FM
active
—
Tomsk-TPU-120
—
437.023000 MHz
FM
inactive
—
Tanusha FM
—
437.050000 MHz
FM
inactive
—
UHF School Contact Downlink (Backup During SSTV event)
—
437.525000 MHz
FM
inactive
—
Mode U - SSTV - Robot-36
—
437.550000 MHz
SSTV
active
—
Mode PD120 FRAM2 Ham ISS simulation
—
437.550000 MHz
SSTV
inactive
—
Mode U APRS Digi
437.550000 MHz
437.550000 MHz
AFSK
inactive
1200.000
Mode V/U FM - Voice Repeater CTCSS 67.0 Hz
145.990000 MHz
437.800000 MHz
FM
active
—
Mode U - SSTV
—
437.800000 MHz
SSTV
active
—
IORS Telemetry
—
437.800000 MHz
FSK
active
9600.000
Mode U - Imaging
—
437.800000 MHz
SSTV
inactive
—
Mode U APRS test
437.825000 MHz
437.825000 MHz
AFSK
active
1200.000
ICARUS Animal-Tracker Experiment
—
468.100000 MHz
PSK
active
656.000
Service Module "Zvezda" (Upper side band)
—
630.128000 MHz
FM
active
—
Control Module "Zarya"
—
632.000000 MHz
FM
active
—
Rassvet
—
637.500000 MHz
FM
active
—
Kvant
—
768.975000 MHz
FMN
active
—
CW Soyuz-TM and Progress M1 beacon
—
922.750000 MHz
FM
active
—
Regul
—
922.763000 MHz
CW
active
—
SpaceX Dragon Wideband Telemetry
—
2.205500 GHz
BPSK
active
—
SpaceX Falcon Wideband Telemetry
—
2.213500 GHz
BPSK
active
—
SpaceX Dragon narrowband telemetry
—
2.216000 GHz
BPSK
active
—
Falcon 9 CCSDS 2232.5
—
2.232500 GHz
GMSK
active
—
ISS CCSDS Data 1
—
2.265000 GHz
QPSK
active
—
Falcon 9 CCSDS 2272.5
—
2.272500 GHz
GMSK
active
—
Mode S2
—
2.375000 GHz
FM
active
—
Mode S - HamTV DVB-S
—
2.395000 GHz
DVB-S2
active
—
Mode S1
—
2.425000 GHz
FM
active
—
Toru S2
—
2.725000 GHz
AM
active
—
TORU S1
—
2.860000 GHz
AM
active
—
Ku Band Digital Data Downlink
—
15.003400 GHz
QPSK
active
—
Quick frequency summary
Example uplink437.800000 MHz
Example downlink121.100000 MHz
ModeFM
UpdatedSun Sep 13 2026 06:03:01 GMT+0000 (Coordinated Universal Time)