Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
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.
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@wintek.com
On Jan 31, 2019, at 7:21 AM, Roy Dean royldean@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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participants (2)
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Roy Dean -
Stephen E. Belter