Archive for 3rd August 2014

Wavetek 907 Repair, YIG Oscillator Teardown

As I mentioned in my previous posting, there was an issue with my Wavetek 907 microwave frequency generator. While everything was fine during my initial testing, the frequency display is now stuck with an out-of-range display and the adjustable frequency range is limited to between around 6.9 Ghz to 7.9 Ghz (instead of all the way up to 11 Ghz). My initial suspicion was that the PTC heater inside the YIGGunn oscillator was malfunctioning. But as it turned out, it was something else. Continue reading ‘Wavetek 907 Repair, YIG Oscillator Teardown’ »