Hi Rb standards have a finite life. Just how long that is depends a lot on how good a job the heatsink on them did as well as the run time. They do die of fairly normal random stuff as well. Like just about everything designed in the last 30 years, schematics and field repair manuals simply don’t exist.
What to do: Start looking for shorted caps. If voltages are ok then move on to things like the frequency of the local oscillator. You can get surplus Rb’s built into functioning devices. Typical price seems to be in the $500 and up range. The advantage is that at least it worked when it shipped. How long it will continue to work …. who knows …. Bob > On Nov 20, 2021, at 5:42 PM, Robert Garnett <[email protected]> wrote: > > Hi, > > > About five years ago I purchased a rubidium standard on eBay. It was an > Efratom. Sadly although The oscillator was working but it wouldn't lock. I > was comparing it to a HP Z38001A which I use as the frequency standard in my > lab. > > I tried to fix it, but I couldn't find the correct schematic so I abandoned > the project. > > I would like some advice on where I could get a working one and how much I > should pay. > > -- > Best Regards Rob Garnett > Toongabbie Vctoria > 0351 489484 > 0417 995 247 > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
