UHF/VHF Satellite receiver & TNC modem

Thread Starter

Kevil

Joined Jun 28, 2020
139
What affordable equipment (HW & SW) to get to receive the signal from the satellite with parameters:

UHF Downlink frequency: 436.680 MHz +/- Doppler shift
VHF Downlink frequency: 145.925 MHz +/- Doppler shift
Modulation: GFSK, CW
Encoding: G3RUH 9k6 baud
Protocols: AX.25, Morse

Recommended TNC modem setup:
PACLEN 255
TXDELAY 15
MYCALL [Your call sign]
UNPROTO CQ (or callsign)
 

Ramussons

Joined May 3, 2013
1,321
Why not try a SDR dongle? One using a RTL2832U.
If the satellite is stationary and having Linear Polarisation, A multi element Yagi should suffice for the antenna.
 
Last edited:

Thread Starter

Kevil

Joined Jun 28, 2020
139
Unfortunately the satellite is not stationary but circling around globe:

Orbit: 500km SSO

Planetum1
1 11111U 22999A 22145.81112100 .00000000 00000-0 00000-0 0 00007
2 11111 97.3620 258.5631 0005768 37.7809 329.2548 15.09638145100000
 
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