Hi,

I have a JLA McLaughlin "signal splitter" model number MCL 10 VBX. I would
guess it's from the 1950's or so, and I'm trying figure out what it is and
maybe get some history on it.

It was used in a set up with a R-390A, R-389, and a Panoramic Radio
Panalyzor SB-8b. My guess is that it's a sideband adaptor since it had an
input from the IF of the receivers and has an "upper" and "lower" switch.
It's in a rackmount chassis with a black crinkle paint face plate.

Is anyone familiar with this?

Thanks,
Steve