Note: the flicker source is not in the ovenized crystal oscillator; the oven is powered even in standby. When powering up from standby, the synthesizer is spot on the frequencies up to 20ghz for about 10 minutes, then the tuning voltage jumps are starting and the frequency offsets are occurring.?
This will be a fun repair, after the nightmare of replacing the mixer (was literally melted) and a blown power supply (wire bonded, so I had to get creative) in the band 0 downconverter.?
