[MRCA] URM-25 adaptor query

[Doran Platt]

In putting all the accessories back into the cover of my URM-25D sig gen. Everything is there except I find that I'm missing the UG-684A/U connector adaptor.  It is mounted inside the front cover and is attached to what looks to be a dummy PL-55 male plug.  Might anyone know what this thing really is?  Is it, perhaps, simply a phone jack to BNC adaptor? Never have used one so am curious...  TNX
Jeep K3HVG
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