In article , K3HVG wrote:
KE9EX wrote:
A co-worker here at the Radio Pier brought in an odd mic connector and
asked me if I knew
the formal name for it. I answered it was a "mic connector on 50-year
old Ham Radios".
Specifically, it was the type that had a dot of solder in the middle,
and a screw-on ring.
This one was made by Switchcraft. Our chief called it an "Amphenol
Mini". I didn't find one in the Switchcraft catalog, but maybe didn't
look hard enough. Was there a more specific
title for this connector? TNX es 73 de KE9EX
I have a drawer full of them, but they're mfg by Switchcraft. Part
number on the little yellow tag reads: 250JF

I think you may be misreading the tag... the OP's description sounds like
a Switchcraft 2501F:

http://switchcraft.com/products/connectors-53b.html

This is the same as an Amphenol 75-MC1F, but I think the Switchcraft PN is
more common.