![Bought an audio oscillator at the Butler, PA Hamfest [2971x2902 - 3.7MB]](https://pic8.co/sh/bGjuwf.jpg){kind=link}
About an hour outside
About an hour outside
This was on the side. Was used in the CO of a local phone system in Erie, PA.
This was on the side. Was used in the CO of a local phone system in Erie, PA.
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