John, I'd put money on one of the feedthrough caps (easily damaged upon installation) in the Maser for such small jumps. >From memory, the 5065A uses SM components, but these could be guilty. I've learned many abstract things I'd never otherwise come across in this thread on home-built masers. I for one would like to see more mileage on this topic although I'm not sure there's $25k in my "Xmas box" for the necessary parts to build one !
Kit VK2LL >>>snip The 5065A is showing occasional phase jumps on the order of 10-100 ps that coincide with small spikes in the current drawn by the lamp exciter, and I'm leaning towards blaming the silver-mica B-E feedback capacitor. (It even has the same designation in both instruments' service manuals, C2.) Tom: this is why your BVA was appearing to jump when I measured it. :-P -- john, KE5FX >>>snip _______________________________________________ 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.
