Satpc32 Fine Doppler Correction?
All:
I noticed that Satpc32's Doppler correction tends to be a bit choppy when working CW and I was wondering if there's a way to correct this?
Doppler corrections appear to take place every 2 seconds or so with the default configuration. The rig is an ICOM 9700.
Tony
Please refer to Section 4 of the manual (included with the software).
Since you seem very unfamiliar with the software, I highly recommend you spend some time reading it.
73 Stefan VE4SW
On Sun, Nov 15, 2020 at 4:40 PM Tony via AMSAT-BB [email protected] wrote:
All:
I noticed that Satpc32's Doppler correction tends to be a bit choppy when working CW and I was wondering if there's a way to correct this?
Doppler corrections appear to take place every 2 seconds or so with the default configuration. The rig is an ICOM 9700.
Tony
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: https://www.amsat.org/mailman/listinfo/amsat-bb
Hi Tony,
Try the CAT menu, then select Speed X 5 or X 10. Should do just want you want! I forget if SatPC32 remembers this setting now...seems before that changing didn't "stick", but think perhaps now it does. You'll see ;)
73,
Mark N8MH
On 11/15/2020 5:38 PM, Tony via AMSAT-BB wrote:
All:
I noticed that Satpc32's Doppler correction tends to be a bit choppy when working CW and I was wondering if there's a way to correct this?
Doppler corrections appear to take place every 2 seconds or so with the default configuration. The rig is an ICOM 9700.
Tony
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: https://www.amsat.org/mailman/listinfo/amsat-bb .
On 11/16/2020 1:33 PM, Mark Hammond via AMSAT-BB wrote:
Try the CAT menu, then select Speed X 5 or X 10. Should do just want you want
Mark et all:
I setup another receiver to monitor Satpc32's TX Doppler correction and found that the CAT speed produced only a slight change. On the other hand, the CAT tuning interval had a profound effect and I found that a value of zero produced smoothest Doppler correction for CW.
Increasing the interval to a value of 10 produced enough lag time to hear the CW tone change abruptly so zero seems to be the way to go.
On 11/15/2020 5:52 PM, Stefan Wagener wrote:
Please refer to Section 4 of the manual (included with the software). Since you seem very unfamiliar with the software, I highly recommend you spend some time reading it.
I did read the manual Stefan and the author suggests using a CAT tuning interval of 50 to 80 which seems fine for SSB, but that value is too coarse for CW.
At least that's been my experienced.
Tony -K2MO
Very good!
Keep on finding the best settings that work for you. I have mine set to 0 for all modes, not that it requires it, but for me to see the radio response immediately to any change, especially when I forget to turn C+ back on after making changes on the radio...lol.
73, Stefan VE4SW
On Mon, Nov 16, 2020 at 7:16 PM Tony via AMSAT-BB [email protected] wrote:
On 11/16/2020 1:33 PM, Mark Hammond via AMSAT-BB wrote:
Try the CAT menu, then select Speed X 5 or X 10. Should do just want you want
Mark et all:
I setup another receiver to monitor Satpc32's TX Doppler correction and found that the CAT speed produced only a slight change. On the other hand, the CAT tuning interval had a profound effect and I found that a value of zero produced smoothest Doppler correction for CW.
Increasing the interval to a value of 10 produced enough lag time to hear the CW tone change abruptly so zero seems to be the way to go.
On 11/15/2020 5:52 PM, Stefan Wagener wrote:
Please refer to Section 4 of the manual (included with the software). Since you seem very unfamiliar with the software, I highly recommend you spend some time reading it.
I did read the manual Stefan and the author suggests using a CAT tuning interval of 50 to 80 which seems fine for SSB, but that value is too coarse for CW.
At least that's been my experienced.
Tony -K2MO
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: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Mark Hammond -
Stefan Wagener -
Tony