On Saturday, July 10, 2021, 2:18 PM, wa2ndv@gmail.com wrote:

I am having issues related to doppler on the uplink for these two sats. Its just started the past few days.

While I am tracking the beacon freq and QSO's just fine on receive the required transmit frequency seems to be anywhere from -3 to -1 Khz from published center and it is moving throughout the pass, but does not appear to be in a linear fashion ( this in addition to normal doppler correction being applied during the pass )

This issue is not seen on RS-44 or PO-101. I'm waiting for some good XW passes to test further.

Nasabare TLE's are up to date and compare closely to Kelso's TLE's.

Anyway, just wondering if anyone else is noticing this ?

Thanks

73

Frank

WA2NDV

FN30

-----------------------------------------------------------

Sent via AMSAT-BB(a)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.

Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/

View archives of this mailing list at

https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org

To unsubscribe send an email to amsat-bb-leave(a)amsat.org

Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org