Thanks Bob and judging from the lamp voltage I believe it. Quite a surprise on both of them. One is 97 and the other 99. At least for these units we have a drop of information that did not seem to be available before. Regards Paul WB8TSL
On Fri, May 24, 2013 at 5:42 PM, Bob Camp <[email protected]> wrote: > Hi > > EG&G went to great lengths to verify the "fill" in their cells. The units > you have should be at least as good as the large Efratom Rb's of the same > era. > > Bob > > On May 23, 2013, at 2:00 PM, paul swed <[email protected]> wrote: > > > Hello to the group I obtained 2 of these units at the last MIT flea. Both > > not working correctly. > > Virtually no documentation on the internet. I recall that 2 years ago > > someone else asked EGG info also and no real responses. > > That said I can tell you a few things. There is a diagram on the unit > that > > shows the 16 connections. Its accurate. > > +24 requires up to 1.5A cold and drops to 300-400 ma hot > > +5 for the synthesizer draws a constant 300 ma > > It seems you can start the RB up without the +5 RB and synthesizer are > > quite separate. > > > > The EGGs seem to have a fair amount of reserve RB gas in the lamp. The > two > > units I have have high lamp voltages even though they were mid 1990s. > > > > Both units were bad. The problem is the 470 uf @25 V 15 volt bypass caps > > and a regulator cap 270 uf @16V. It literally fell apart when I was > > removing it. One of the 470 UFcaps read 1UF esr 2.6 ohms > > Replaced with high temp 50 V equivalents and both units startup and > > automatically lock in about 5 minutes. Changing these caps also put the > > units back into specification for stability. > > > > So there you have it the total EG&G cookbook of RBs. > > Good luck and they do seem to be a fine unit. > > Regards > > Paul. > > WB8TSL > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
