[amsat-bb] Ham Radio Deluxe & satellite related topics

Stephen E. Belter seb at wintek.com
Thu Jan 31 13:17:39 UTC 2019


Mike,

Roy is correct.  The uplink frequency used by your transmitter *should* be lower at AOS and increase during the pass to LOS.  

73, Steve N9IP
--
Steve Belter, seb at wintek.com


> On Jan 31, 2019, at 7:21 AM, Roy Dean <royldean at gmail.com> wrote:
> 
> The below sounds correct to me.   The speed of the object traveling toward
> you makes up for the lower frequency from terrestrial origin.
> 
> --Roy
> K3RLD
> 
> 
>> But the uplink frequency has the opposite behavior and is clearly not
>> correct. That is - as the sat is headed towards you from AOS, the rig is
>> tuned to a TX frequency LOWER than the TX frequency of the sat and it's
>> increasing until TCA (where, momentarily the rig is tuned exactly to the
>> sat's RX/upling frequency)... then begins to increase in frequency as the
>> sat moves away towards LOS. None of that makes sense to me.
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