[Milsurplus] Mystery Circuit

[howard holden]

3995 KHz
Sent from my iPhone

> On Jun 22, 2024, at 00:22, Hubert Miller <Kargo_cult at msn.com> wrote:
>
> I hadn't looked at the tube plug closely. Good call ! But with the crystal in that horizontal position, how would you ever change it?
> I don't want to save and rotate the photo, so what is the crystal freq, please ?
> -Hue Miller
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