I would like to try to maximise the time I have to use the satellite. My handheld radio (Anytone 868) doesn't have an auto doppler shift, so I am wondering how to calculate the doppler frequencies? For example, on this link https://amsat-uk.org/beginners/how-to-work-fm-satellites/, all of the frequencies are listed to be programmed into a handheld (accounting for doppler shift). I would like a similar list of frequencies for the Fox-1D (or know how to calculate them). Many Thanks, Oscar M7OJA (IO94HT)
Hi Oscar (very appropriate name for this list!),
If you have a computer or smart phone accessible during the pass, I suggest opening up the following webpage:
http://www.amsat.org.ar/pass.htm
Set your grid square at the bottom and hit "Resolve and Set New". Double check that the little house on the map is on your location. If that is correct, simply click on the satellite in the list and the upper right will change to a display that shows the elevation, azimuth, and current uplink/downlink at your location. Then it's simply up to you to change your uplink and downlink VFO to the closest match of the displayed correct doppler frequency.
--Roy K3RLD
Try this http://www.work-sat.com/Home_files/FM-VOICE-SATS-1Q-2018.pdf Hope it helps. 73! k6vug
On Friday, July 17, 2020, 7:17:34 AM PDT, Roy Dean via AMSAT-BB amsat-bb@amsat.org wrote:
I would like to try to maximise the time I have to use the satellite. My handheld radio (Anytone 868) doesn't have an auto doppler shift, so I am wondering how to calculate the doppler frequencies? For example, on this link https://amsat-uk.org/beginners/how-to-work-fm-satellites/, all of the frequencies are listed to be programmed into a handheld (accounting for doppler shift). I would like a similar list of frequencies for the Fox-1D (or know how to calculate them). Many Thanks, Oscar M7OJA (IO94HT)
Hi Oscar (very appropriate name for this list!),
If you have a computer or smart phone accessible during the pass, I suggest opening up the following webpage:
http://www.amsat.org.ar/pass.htm
Set your grid square at the bottom and hit "Resolve and Set New". Double check that the little house on the map is on your location. If that is correct, simply click on the satellite in the list and the upper right will change to a display that shows the elevation, azimuth, and current uplink/downlink at your location. Then it's simply up to you to change your uplink and downlink VFO to the closest match of the displayed correct doppler frequency.
--Roy K3RLD _______________________________________________ Sent via AMSAT-BB@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! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
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Roy Dean