[amsat-bb] Doppler Tracking ... Recent Radios

Clive Wallis amsat-bb at g3cwv.co.uk
Thu Mar 25 06:07:47 PDT 2010


The thread about Doppler tracking with an FT-726 has reminded me of a 
problem I have with an FT-736.  I got this radio some time after 
developing the interface for the 726.

I've noticed that when the 736 is under CAT control, none of the manual 
controls work. I'm wondering whether this applies also to the FT-847 an 
the ICOM 910 rigs?

One advantage of the method used on the FT-726 was that I could  trim 
out any errors in  Doppler correction with the manual tuning control 
knob.  This proved  very useful for BPSK telemetry. 

As an alternative, do any of the modern tracking programs allow easy 
manual correction of RX frequency during  a pass?

Any comments would be much appreciated.

73     Clive   G3CWV

Hitchin, North Hertfordshire, UK

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