50C is what I have sort of seen over the years. Just wondered could there have been a lower temp version. That made no sense. But then this beast has never made a lot of sense. The $20 mystery from Frequency Electronics. Thanks Bob Paul WB8TSL
On Thu, Feb 11, 2021 at 8:08 PM Bob kb8tq <[email protected]> wrote: > 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. > _______________________________________________ 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.
