UHF Reference frequency for setting ppm offset in SDR.
I did a google search on how I could better calibrate my el-cheapo SDR to receive HuskySat-1 (I use NOAA weather stations to calibrate roughly to VHF), and I found this article by WA1CYB:
https://www.amsat.org/wordpress/wp-content/uploads/2018/02/2017Symposium-SDR...
Sure enough, Channel 17 had a strong pilot tone at 488.309441 for me to use as a half-way decent reference! Hoping this can help others in the future.
--Roy K3RLD
On 2/8/20 5:14 PM, Roy Dean via AMSAT-BB wrote:
I did a google search on how I could better calibrate my el-cheapo SDR to receive HuskySat-1 (I use NOAA weather stations to calibrate roughly to VHF), and I found this article by WA1CYB:
https://www.amsat.org/wordpress/wp-content/uploads/2018/02/2017Symposium-SDR...
Sure enough, Channel 17 had a strong pilot tone at 488.309441 for me to use as a half-way decent reference! Hoping this can help others in the future.
For those in other parts of the world with GSM networks kalibrate-rtl can be an option to get to the same result. Source https://github.com/steve-m/kalibrate-rtl
My experiences at https://idefix.net/~koos/newsitem.cgi/1493498616
Koos PE4KH
.. and for those in countries where GSM has finally gone away, you can use LTE signals: https://gist.github.com/darksidelemm/b517e6a9b821c50c170f1b9b7d65b824
73 Mark VK5QI
On Sun, Feb 9, 2020 at 4:32 AM Koos van den Hout via AMSAT-BB < amsat-bb@amsat.org> wrote:
On 2/8/20 5:14 PM, Roy Dean via AMSAT-BB wrote:
I did a google search on how I could better calibrate my el-cheapo SDR to receive HuskySat-1 (I use NOAA weather stations to calibrate roughly to VHF), and I found this article by WA1CYB:
https://www.amsat.org/wordpress/wp-content/uploads/2018/02/2017Symposium-SDR...
Sure enough, Channel 17 had a strong pilot tone at 488.309441 for me to
use
as a half-way decent reference! Hoping this can help others in the future.
For those in other parts of the world with GSM networks kalibrate-rtl can be an option to get to the same result. Source https://github.com/steve-m/kalibrate-rtl
My experiences at https://idefix.net/~koos/newsitem.cgi/1493498616
Koos PE4KH
-- Koos van den Hout Visit the site about books with reviews https://idefix.net/ https://www.virtualbookcase.com/
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participants (3)
-
Koos van den Hout -
Mark Jessop -
Roy Dean