[amsat-bb] Mac Doppler

Joe nss at mwt.net
Sat Jul 11 00:15:42 UTC 2020


Nope he wasn't touching anything the Mac Doppler was doing it all  all 
by itself.

Joe WB9SBD

On 7/10/2020 6:42 PM, Burns Fisher via AMSAT-BB wrote:
> He must have been tuning while he was looking at an inverting linear
> transponder.  That is, the downlink frequency goes up while the downlin
> frequency goes down as you tune across the passband.  The doppler
> correction will always be in the same direction.
>
> On Fri, Jul 10, 2020 at 7:32 PM Joe via AMSAT-BB <amsat-bb at amsat.org> wrote:
>
>> A buddy of mine just installed MacDoppler
>>
>> It seems to work great but he sent me a video that doesn't make sense to
>> me.
>>
>> It is controlling his radio changing freqs as needed to account for
>> Doppler.  BUT... I have never seen this before.
>>
>> the 144 band was changing one way in freq and the 440 band the other
>> way.  Huh? That doesn't seem right in my head.
>>
>> anyone care to maybe explain whats happening?
>>
>> Joe WB9SBD
>>
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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