Ed Several comments Great pix with the right level of detail to actually see and analyze stuff. Second what a find you have there. A real mans RB nothing small about the gas cells.
Good also to see many what I consider to be common components of the late 60s and 70s. Also I noticed little or no over heated board components. A lot of the lpro type RBs I have fixed are do to over heated components. Not in this case it seems. The color of the lamp is way off to my thinking and what I have seen. That color tends to be from a non heated RB. But I need to be very careful with that comment. Perhaps the gas mixtures simply a bit different and so the color would be different. Also its not as bright as I might expect. Noting the various components its quite possible they have drifted in value. Like the transistors thats an age that they would tend to do that over 30-40 years. Lastly your bench Nothing like a bench jammed with Stuff. Comfortable. Sorry to say I have seen those pins and have no clue how you might find them. Hamfest flea market stuff? Regards Paul On Sat, Apr 28, 2012 at 2:43 PM, Ed Palmer <ed_pal...@sasktel.net> wrote: > First, I'd like to thank Magnus, Joe, Paul, and Ed for taking the time to > provide answers, ideas, and challenges to my assumptions. It has all been > very helpful. I'm still working on it so I don't have a resolution yet. > > Second, pictures. If anyone is interested, check out > http://s701.photobucket.com/**albums/ww18/edpalmer42/Tracor%**20304-B/<http://s701.photobucket.com/albums/ww18/edpalmer42/Tracor%20304-B/>. > > Third, I'd like to build an extender board, but I can't find the > connectors. The contacts are called Varicon and are used both on circuit > boards and in connectors. The connector version is available, but I can't > find the board version. The last picture in the above gallery shows a > close-up of the connectors. They were available in regular and mini > versions. I need the regular ones that stand about 4.3 mm high. The minis > are about 3.5 mm high and won't mate with the regular ones. New ones could > be loose or spaced out on a plastic strip to make installation easier. > > Fourth, I'm currently working on the cavity tuning. Does anyone know of a > document or research paper that discusses cavity sizes for Rb standards - > preferably with equations? I found this document: > > http://www.alcatel-lucent.com/**bstj/vol25-1946/articles/** > bstj25-3-408.pdf<http://www.alcatel-lucent.com/bstj/vol25-1946/articles/bstj25-3-408.pdf> > > that talks about cavities in general, but the calculations don't work. > I'm guessing that the Rb cell is changing the resonant frequency of the > cavity. > > Thanks, > Ed > > > ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<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.
