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 app
t;> is important... If it is, it is just a guide.
>>
>> If your bulb is clear, and it is glowing, 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. J
e back in the
>early 90’s …
>
>Bob
>
>> On Jul 28, 2015, at 9:56 AM, Mike Niven 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
>> Rac
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
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 p
