Tianwen-1 safe mode telemetry

On 2026-08-02, Peter Gülzow, AMSAT-DL s president, noticed that Tianwen-1 was transmitting very low rate telemetry, in contrast to the usual 16 kbaud telemetry. This is typical of a safe mode configuration, since it allows decoding even when low gain antennas are used and the attitude is unfavourable. Peter made a couple of short IQ recordings. Continue reading Tianwen-1 safe mode telemetry