VALCOM 70 Volt Expander / VC-V-1095 /

okay just sitting here going through some of the spoils of ebay today not going to cover everything just I've got two questions and they're RF adapters first one is I think of course figured out what this is but it's a really nice heavy-duty units silver-plated got a number on it 94 375 dash RF 21 CVA but you know standard UHF connector on one end but the other end it's completely isolated so I've checked with the ohmmeter and the center pin contact here on the other side attaches to this metal ring right here but it's isolated in the middle there's Teflon in the middle and this unscrews okay and then there's also a teflon sleeve on the inside so that metal that attaches to this pin isn't connects to nothing on the other side basically so you you install a you know connector in here there's no connection between this pin then and so I'm assuming this is supposed to be an RF tap or new a