[AMSAT-BB] Odd issue with CAS-4A & B

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