My equipment setup is as follows:
1 Outernet patch antenna. 8 dB Gain (est)
2 Preamp 34 dB gain (est)
3 25ft RG-58/U Cable 24 dB loss (from chart)
4 Signal strength at spectrum analyzer -113.87 dBm
Equals received signal strength at antenna -131.87 dBm.
Do you know the specs on the Inmarsat transmit signal at the satellite. (EIRP, Antenna pattern, polarization, etc?)
-- Rich @ wc8j