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.
