Hi Even for an outer oven, anything below 60C / 140F would be low enough to run into significant problems. On a mil device, an upper end temperature on the equipment likely would be over 70C. The outer oven would need to be 5 to 10C above that.
Bob > On Feb 11, 2021, at 5:55 PM, paul swed <[email protected]> wrote: > > OK I have had several responses and 110F is low as I expected. > Wonder if I am being faked out? Perhaps by an inner oven and I am only > reading the outside of the outer oven. The Older URQ10 and newer URQ23 do > have 2 ovens. The meter switch for test is only labeled 1-9. no other clues > to the function. I noticed 2 positions change with warm up. Sort of > supports the 2 oven theory. > Really do not want to take what might be the outer oven off to put the > probe in. > Thanks everyone. > Paul > WB8TSL > > On Thu, Feb 11, 2021 at 5:32 PM Bob kb8tq <[email protected]> wrote: > >> 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 <[email protected]> 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 >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >>> and follow the instructions there. >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
