Shouldn't the outer oven be cooler than the inner oven except during warmup? I would think the inner electronics would be generating heat.
Paul Alfille K1PHA On Thu, Feb 11, 2021 at 9:30 PM paul swed <[email protected]> wrote: > 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. > _______________________________________________ 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.
