[time-nuts] Thunderbolt "osc age alarm", where to get replacement oscillator?

Chuck Harris cfharris at erols.com
Fri Nov 13 17:58:31 EST 2015

Typically all that means is the crystal needs to have its
trimmer capacitor adjusted back into range.  I have no direct knowledge
of the TBolt's oscillator, but it might be as simple as removing
a screw, and adjusting the trimmer... Or, in some cases you have
to remove a solder blob from the metal can, and access the trimmer.

I would sure hate to toss away all that hard earned aged xtal for
a new one at this point.

-Chuck Harris

Pete Stephenson wrote:
> Hi all,
> Lady Heather just reported that my Thunderbolt's "osc age alarm" just activated.
> The manual tells me this means that the oscillator control voltage is
> at a rail and that the oscillator should be replaced. It says this
> shouldn't be needed during the first 12 years of service, but mine is
> ~17 years old, so its time may have come.
> Where can I find a suitable replacement oscillator? Is there a
> recommended part number? If the original part is no longer available,
> what is a good substitute?
> Cheers!
> -Pete

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