Hi The Efratom bulbs have a “magic mix” of gas in them. The only place I have ever bought them is direct from Efratom. They were fairly expensive back in the early 90’s …
Bob > On Jul 28, 2015, at 9:56 AM, Mike Niven <[email protected]> wrote: > > Would anyone know of a source of the Rubidium bulb fitted in the Efratom FRK > (and probably other FRx) standards? I have repaired and refurbished my Racal > 9475, which is fitted with the older style FRK (not -H or -L) module. It is > working properly at present but the lamp voltage is down to 5.5V, which is > below the stated minimum of 6V. I have tried rejuvenating the bulb using a > hot air gun, as described by Corby, but this has had no obvious impact. > Hence, I have little feel for how much life the existing lamp has left and a > spare would be good for my peace of mind. > > Many thanks. > > Mike > _______________________________________________ > 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.
