[Milsurplus] Whats this coupler

[telegrapher at att.net]

I have some CU-582/U RF in line couplers.  They are in a gray box about
3 1/2W X 4 1/4 H X 1 1/2 thick.  They have jack on the front of them
T-R-S type.  Line in and line out are "N" type connectors.  That's all
there is to them except inside is a 2 port coupler that i would think
reads FWD power from one and Ref. power from the other.  Sparkling clean
inside, came out of the airplanes i was cleaning out.  51.5 ohm
impedance, 25-1000 Mc range.  Made by Standard Electronic Corp., Newark,
NJ.  I don't see anything about them unless there is a diode in the
coupler unit itself, i didn't check that.  Also i should have checked to
see where the coax that came in and out of them terminated.  Come to
think of it although they were side by side on the bottom of a shelf,
they were next to the ARC-38 position.  I'm suspecting that's what they
were for but i'd really like to know the whole story.  Power rating is
250W.

If you think you know or want to see pictures, drop me a note and i'll
email you the photos.

larry
W0OGH