Thanks Chuck and Bob for the further comments. I have actually had a reply
from Sematron. Seems that the lamps are still available at only £781.63 - call
it $1,100! Since that probably buys four Racal 9475s when they appear, I think
I might go the other route. I also think that the lazy
, it is probably also working.
I seem to recall from HP's descriptions of how their 5065 was made
that the lamp, and filter cell are a specially matched set. Just any
lamp is not necessarily going to work with any filter cell.
-Chuck Harris
Mike Niven wrote:
Thanks for the comment Bob. Tracing
…
Bob
On Jul 28, 2015, at 9:56 AM, Mike Niven mfniven at ymail.com 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
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
I have acquired an old working 198kHz/162kHz off-air frequency standard that
appears to be a Halcyon OFS1 circuit board mounted in a DIY case. I think this
since
it came with a sheet of alignment instructions from Halcyon which certainly
ties
up with the PCB layout but the case is not made to
