[time-nuts] Glass Envelope Quartz Crystals

[Tim Shoppa]

Interesting! Date code from the 90's? Russian, right?

They certainly look like common 7 pin miniature tube pattern.

But unlike a real 7 pin tube that actually has stiff Cunife or Fernico
pins, it looks like you have just tinned wires out the bottom of yours, and
your pics don't show the bottom of the tube, but it looks like outside the
glass the wires from two different pin-holes are wrapped together?

For testing purposes I don't see any problem using a 7-pin miniature tube
socket if you have it on hand and carefully inserting the pairs of twisted
wires into the socket holes.

But for more permanent use seems to make more sense to solder the pins to a
PCB if they are tinned already.

Tim N3QE

On Mon, Feb 1, 2016 at 9:58 PM, Daniel Watson <watsondaniel3 at gmail.com>
wrote:

> Hi,
>
> I purchased a pair of interesting glass envelope crystals for a project.
> Here are some pictures:
>
> http://syncchannel.blogspot.com/2016/02/glass-envelope-quartz-crystals.html
>
> Does anyone have an idea about what mount/socket I should buy for these? I
> read a previous thread on the list about Bliley crystals using a B7G mount,
> but I'm not sure if that type might work here.
>
> Also, when building up a circuit to make these oscillate, are there any
> specific differences about crystals in this package that I should keep in
> mind?
>
>
> Thanks much,
>
> Dan W.
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