Hans, The funny thing is that if both stations don't auto-correct for doppler they can stay in QSO for much longer since both will "walk" the satellite's pass band. I guess this is how it worked in the good old days. So, when I faced this situation, I would tune to the calling station then turn OFF my auto-correction and adjust only the uplink slightly to hear myself when transmitting. It worked in most cases. If the calling station puts out a very short CQ, like in FM sats, just TX and ask them to do a longer call. GL es 73! Umesh, k6vug On Thursday, May 9, 2019, 1:08:16 AM PDT, Hans BX2ABT via AMSAT-BB amsat-bb@amsat.org wrote:
How to deal with signals (CW/SSB) where the other party doesn't seem to do doppler correction? I use an Airspy/IC820H combo to receive (2m) and transmit (70cm) and both are controlled by Gpredict so that uplink and downlink on linear sats stay in tune. However, I hear many stations that apparently don't do this and their signals "walk" up very fast, right out of my passband. Difficult to get their call, let alone have a QSO. So what should be my strategy to deal with this?
73 de Hans
BX2ABT