Thanks Panicmode.
You referred me back to my own querry. I was the OP there.
The answer I got does not seem to be correct. Tracing the small I/F board mounted on the YIG osc. I found.....
..On the SIP connector on the side of the YIG..
pin1. positive supply unknown voltage, protected with a shunt diode+ tantal (35V) .
pin2 fm coil 1.2 ohms
pin3 main coil (seems to be two coils in series connection on the small board mounted on the YIG total 47 ohms)
pin4 main coil return.
pin5 fm coil return.
Here vacant pin position, not numbered.
pin6 a negative supply via series diode plus protected with series 68 ohm series resistor and shunt protective diode + 20V Tantal capacitor . actual working Voltage unknown.
pin7 another negative supply via series diode plus protected with series 160 ohm resistor and shunt diode and capacitor (20V) . Voltage unknown.
pin 8 Goes to ground
The label on the YIG refers to the Ia and Io ( amplifier current and oscillator current), Ia= 64mA Ra = 68.1 Ohms and Io= 25mA Ro =162 Ohms.
This matches the resistances above. Is that a coincidence? I don't know. Probably not.
I need to determine the nominal voltage of supply on pin1 and particular, and , pin 6 and pin7.
Thanks for the help, I am still slightly short of my needs, as of now.
Azzy.