Doppler adjustment - easy to remember
Regarding all the explanations on 'how to' adjust doppler... The 2m usually doesn't move enough to need much adjusting, maybe a small bit near LOS. Usually it's just the UHF that needs adjustment, whether it's the uplink or the downlink... So, it's simple if you remember this phrase I came up with:
Adjust UHF UP when it's the UPLINK and DOWN when it's the DOWNLINK because TWO meters is TOO much to bother with.
Hope that helps. 73, Kevin N4UFO
Hi
You can easy see/check real dopplers updated using http://amsat.org.ar/pass?satx=AO-92
Or the satellite you are tracking.
73, LU7ABF, Pedro
On 6/7/18, Kevin M via AMSAT-BB [email protected] wrote:
Regarding all the explanations on 'how to' adjust doppler... The 2m usually doesn't move enough to need much adjusting, maybe a small bit near LOS. Usually it's just the UHF that needs adjustment, whether it's the uplink or the downlink... So, it's simple if you remember this phrase I came up with:
Adjust UHF UP when it's the UPLINK and DOWN when it's the DOWNLINK because TWO meters is TOO much to bother with.
Hope that helps. 73, Kevin N4UFO _______________________________________________ Sent via [email protected]. 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! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
What about always correct Doppler on the highest frequency? That is the one affected most by Doppler. 73...bruce
On 6/7/2018 7:42 PM, Kevin M via AMSAT-BB wrote:
Regarding all the explanations on 'how to' adjust doppler... The 2m usually doesn't move enough to need much adjusting, maybe a small bit near LOS. Usually it's just the UHF that needs adjustment, whether it's the uplink or the downlink... So, it's simple if you remember this phrase I came up with:
Adjust UHF UP when it's the UPLINK and DOWN when it's the DOWNLINK because TWO meters is TOO much to bother with.
Hope that helps. 73, Kevin N4UFO _______________________________________________ Sent via [email protected]. 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! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Bruce -
Kevin M -
Pedro Converso