AMSAT Fox-1 Satellites Uplink FM (67 Hz CTCSS) Downlink FM Comments AO-91 (RadFxSat / Fox-1B) 435.250 MHz 145.960 MHz Operational – Due to battery status, please do not attempt to access while in eclipse. SO-50 (SaudiSat-1C) Uplink FM (67 Hz CTCSS) Downlink FM Comments SO-50 (SaudiSat-1C) 145.850 MHz 436.795 MHz Operational SO-50 also has … Continue reading FM Satellite Frequency Summary