[time-nuts] Restoring GR 1120-AB Frequency Standard - Need assist...

[wa3frp at aol.com]

I am in the last stage of restoring a 1964 General Radio Frequency 
Standard Model 1120-AB.

I'm having trouble getting the inner oven to work propoerly and the 
problem has been traced to a defective thermostat in the inner oven.  
In checking, the thermostat is a thermoswitch manufactured by Princo 
and is no longer available.

My options appear to be:

1. locate a working GR Standard Frequency Oscillator (1113-A) and 
replace the entire chassis.

2. locate a non-working GR Frequency Oscillator and part it out as 
needed

3. find a suitable replacement for the original thermoswitch (78 C - 
closes circuit when temperature is reached)


I was wondering if anyone on this list has any sources or leads for #1 
and #2 and any opinions on a source for #3.

Thanks
Russ WA3FRP