[time-nuts] R&S XSRM Rubidium

Oz-in-DFW lists at ozindfw.net
Wed Feb 16 19:27:36 UTC 2011


And cold fluorescent tubes.  I can often get my attic fluorescents to
start with a bright flashlight applied close to an end. 

On 1/22/2011 5:05 PM, Bob Camp wrote:
> Hi
>
> Neon bulbs do the same thing. The ignition voltage is light sensitive. If you see a place they are being used as a voltage reference, they get painted black.
>
> Bob
>
>
> On Jan 22, 2011, at 6:02 PM, WB6BNQ wrote:
>
>> Paul,
>>
>> The LED thing is interesting.  Are you sure you were not just seeing a reflection
>> of some sort ?
>>
>> Bill....WB6BNQ
>>
>> paul swed wrote:
>>
>>> Other thing, measuring ignition time. On the first run just for the heck of
>>> it I flashed a led light into the ampule and it ignited instantly. So
>>> perhaps for old hard starting end of life RB lamps this might be a trick to
>>> at least get it going for a bit longer.
>>
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