SATELLITE INTELLIGENCE
NOAA 18
Frequency and transmitter information from the connected satellite dataset, with direct routes to receiving equipment and related radio tools.
NORAD28654
Statusin orbit
Transmitters8
SourceSatNOGS
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Transmitters and frequencies
Description
Uplink
Downlink
Mode
Status
Baud
Direct Sounder Broadcast
—
137.350000 MHz
DSB
active
8320.000
APT IQ Recording
—
137.912500 MHz
FSK
active
19200.000
APT Downlink
—
137.912500 MHz
APT
inactive
—
ARGOS-3 A-DCS 465.9875MHz
—
465.987500 MHz
BPSK
active
400.000
SARSAT L-Band
—
1.544500 GHz
BPSK
active
2400.000
GAC (active over Eastern US)
—
1.698000 GHz
FMN
active
—
HRPT Downlink
—
1.707000 GHz
HRPT
active
665400.000
Noaa 18 SGLS channel
—
2.247484 GHz
BPSK
active
500000.000
Quick frequency summary
Example uplink—
Example downlink137.350000 MHz
ModeDSB
UpdatedSun Sep 13 2026 06:03:01 GMT+0000 (Coordinated Universal Time)