[amsat-bb] non-doppler correction on linear sats

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