[time-nuts] R&S XSRM Rubidium

Robert Darlington rdarlington at gmail.com
Fri Jan 21 15:24:59 UTC 2011


I bought one just yesterday on eBay for $58 USD shipped from China to
replace one I broke. I did some surgery to change the behavior of the lock
lamp (I wanted it to light when locked, not when unlocked).  A week later I
went to document what I did for the list members and walked across the
carpet, then the plastic thing under my chair and reached out and touched
the LED lead rather than the metal case.  Zap.    I do know better and I do
take static precautions.  I also focus intensely on what I'm doing and
forget simple things like "don't grab a bare lead when charged" sometimes.


-Bob

On Fri, Jan 21, 2011 at 5:38 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> I would not do anything that's not reversible. You may well come across a
> FRS-C that's got a good lamp and dead electronics.
>
> Of course given what telco Rb's cost these days ....
>
> Bob
>
> On Jan 20, 2011, at 10:47 PM, paul swed wrote:
>
> > Well I think bad news.
> > I have a frs c apart. Unfortunately the rb lamp doesn't even light at
> all. I
> > have been getting RF at about 80.5 Mhz though at the moment I am not. I
> do
> > not see any residue on the bulb.
> > On one of the websites I did see that the lamp should run outside of the
> > oven. Granted not correctly but should ignite. I guess my low lamp V was
> > really saying no lamp. So my fear is this really is not recoverable.
> > I plan to dig into the oscillator tomorrow to see whats up.
> > Regards
> > Paul
> > WB8TSL
> >
> >
> > On Wed, Jan 12, 2011 at 3:09 PM, Bruce Griffiths <
> bruce.griffiths at xtra.co.nz
> >> wrote:
> >
> >> Magnus Danielson wrote:
> >>
> >>> On 12/01/11 18:41, paul swed wrote:
> >>>
> >>>> Did you use a large heat gun or the smaller ones for heat shrink.
> >>>> I might guess the smaller one
> >>>>
> >>>
> >>> I have a smaller one so that was what I used and it was more than
> >>> sufficient. I will get a large one too, but with some propper effect
> >>> control.
> >>>
> >>> Cheers,
> >>> Magnus
> >>>
> >>> Just wire a dimmer in series with the heater element.
> >>
> >> Bruce
> >>
> >>
> >>
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