[time-nuts] AN/URQ-13 FE-15a oscillator question

[Bob kb8tq]

Hi

110 F makes very little sense unless you are in a very cold climate. 
For military gear (or any gear for that matter) 43C on the oven just
doesn’t work. 

110 C would make sense in a very high temperature environment. 
(think of 85C upper end ….).

Bob

> On Feb 11, 2021, at 2:18 PM, paul swed <paulswedb at gmail.com> wrote:
> 
> Hello to the group.
> I have had a AN/URQ-13 or FE-15a oven oscillator for years.
> Its never worked correctly and in reality some early alpha build. (Funny
> that its labeled 15a)
> Looking online there is no documentation that I have been able to find over
> the years.
> However in another discussion on a AN/URQ-23 that does have a manual and
> schematics I realized my guesses on power could be totally wrong. Using
> voltages like the URQ23 the URQ13 actually behaves fairly well. I was lucky
> that I didn't destroy something with my original guess.
> That said what I find odd is the internal crystal oven runs at exactly 110
> degrees. Its repeatably warms to that level with a range of supply from +/-
> 12-15V.
> Does 110 degrees F make any sense at all?
> Thank you
> Paul
> WB8TSL
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