I've stumbled across this old HP YIG 5086-7096 1.8-4.2GHz oscillator.
Chuck Harris has correctly listed the pinout as seen in the HP86230 plug-in schematics, but that pinout is misleading (wrong), as had the original author already figured out. Thanks also to Rainer DF6NA for providing me the schematics.
Here is the correct pinout, without any doubts, as the YIG happily lives and gives me nominal output:
Pin 1: +20V
Pin 2: FM+ (1.5Ohm)
Pin 3: Main coil (45Ohm)
Pin 4: Main coil
Pin 5: FM-
Pin 6: -10V
Pin 7: -10V
Pin 8: Gnd
Main coil current vs. frequency:
46.8mA ... 2.025GHz (my setup did not allow me to go further down, but I expect it would go to 1.6GHz)
80.0mA ... 3.404GHz
100.0mA ... 4.231GHz
Cheers!
