Categories
Ham Radio

Federal AM-864 (maybe)

[Today’s run: 2 miles]

Another piece of equipment I received with the AM transmitter was this thing.

It has a big  output level meter on the front scaled in “db attenuation”.  Sounds like an audio thing doesn’t it?

I did some searching and figured that it must be something very similar to the Federal AM-864/U limiter/compressor, a tube audio compressor that is somewhat in demand by recording studio types.

This one has an extra tube, a 6C4, and it has a big switch on the front.  It has a place where there used to be an identification tag.

I think the big switch is for transmit/receive control.  And I think the 6C4 is an additional microphone amplification stage.  I think this was modified to act as a remote console for the big AM transmitter, or something similar.

That’s my theory anyway.