[amsat-bb] How you do DOPPLER correction in Linear Transponders?

[Fabiano Moser]

Dear friends,

We know that some Satellite Operators use diferent system to doppler
control.

For Linear Transponder
1) Adjust uplink and downlink automatic by CAT? (Not always woks, some times
I´m up or down from the computer adjust)
2) Adjust uplink and downlink manual
3) Keep Uplink fixed and adjust only the Downlink frequency.

What is the more indicate method to use?
FT-847 have knob to adjust Uplink without change downlink VFO, and I´m using
it to keep my voice in downlink at same downlink much I can.

But I know some operators use fixed uplink.

How you do?

-- 
73
Fabiano Moser CR7/PY5RX
ARISS-PORTUGAL (Amateur Radio on the International Space Station)
Representative at Teleconference and Portugal Telebridge Coordinator.
AMRAD/AMSAT-CT
http://www.amrad.pt/ariss.php

"There is no great talent without great will. (Honoré de Balzac)"