Page 1 of 1

CW chrip on Hermes board( Cyclone3 fpga)

Posted: Wed Dec 10, 2025 3:58 pm
by ve2xx
Has anyone had any issues with the 122.88 mhz osc?? 4 yrs ago i replaced the chirpy osc with this https://www.crystek.com/specification/vcxo/CVHD-950.pdf
and its starting again,

tried all kinds of things . DC measurements , fw, sw , switched to Trimble 10 mnhz external GPSDO, same chirp

tks

Re: CW chrip on Hermes board( Cyclone3 fpga)

Posted: Wed Dec 10, 2025 5:32 pm
by w-u-2-o
On receive, or on transmit?

Re: CW chrip on Hermes board( Cyclone3 fpga)

Posted: Wed Dec 10, 2025 6:06 pm
by ve2xx
on Tx OTA,

did the same tests with Orion 2 board and 100D no chirp on tx'd signal