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Re: Re: AO40RCV & FT-847



At 02:31 PM 2/14/2002 -0600, Estes Wayne-W10191 wrote:
>Don Woodward wrote:
>
>         I just got a computer in my shack and I'm wondering what setup 
> other FT-847
>         users are using to do auto Doppler correction - I.E. Cable, etc.
>
>
>Wayne replies:
>
>If you are asking about auto Doppler correction for satellite transponder 
>operation:
>
>Satellite tracking programs such as InstantTrack+InstantTune, SatPC32, 
>Nova+W6IHG Radio Tuner, and WiSP+WiSP DDE can Doppler tune via a direct 
>serial connection to the FT-847 CAT port.  That works great for 
>transponder operation.




Wayne et al,

The W6IHG Radio Tuner has been used since the launch to track AO40 
telemetry. It works for hours on end. The tuning steps are apparently small 
enough that AO40Rcv tracks right though them - I had about 99% after six 
hours the other day. So not really a problem.

Jerry, W6IHG


>  But it's not good for telemetry decoding because tuning would occur in 
> the middle of telemetry blocks, resulting in decode errors.  The AO40RCV 
> up/down Doppler tuning only occurs BETWEEN telemetry blocks.
>
>Wayne Estes W9AE
>Mundelein, IL, USA

------------------------------------------
Dr. Jerry R. Pixton, PIXOS Designs LLC
http://www.pixos.com/designs/RadioTuner/
jpixton@shentel.net
------------------------------------------

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