Charles sounds like what I am doing. What size fan do you use? Bert In a message dated 7/17/2011 9:13:42 P.M. Eastern Daylight Time, charles_steinm...@lavabit.com writes:
Poul-Henning wrote: >Cooling Rb's should happen only through the base-plate. >For frequency stability, you should strive to have a constant >baseplate temperature. I mounted an FRS-C in an unvented cast aluminum box by its baseplate (after cleaning up the mating surface in the box on a mill to get good contact), then mounted the cast box on shock mounts in an enclosure along with a power supply, batteries, dist amp, dividers, monitoring, etc. The outer box has a small, variable-speed fan that is controlled by the temperature of the inner box in the middle of the FRS-C baseplate contact area. The control loop keeps that temperature at 45C +/- about 0.1C. It seems to work very nicely. I can't detect any effect from the fan's vibration. Best regards, Charles _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
