Be very careful about "Doppler correction" for digital modes.

Falconsat just went over 435.111 MHz to 435.095 MHz doppler corrected using MacDoppler...

Digital modes usually cannot stand the phase shift that occurs every time a radio steps in frequency. Those bits are lost. If you set to 100 Hz steps, over the full 18 kHz of Doppler, then 180 times during the pass, you are *destroying* the data you are trying to decode.

So it is better to maybe step every 1 KHz and only have 18 blackouts instead of 180.

Assuming the decoder can still work with up to 500 Hz offset.

Doppler stepping is very helpful for SSB voice modes. But disasterous for digital. That is for step tuned radios anyway.... I assume smart Doppler correction in DSP receivers work around this problem?

Bob, WB4aPR