Hi BL:
I don't have experience directly with this connector but there are a couple of shielded connectors that use two contact pins.
One is called Twinax and the other is used on the R-390 tube type military receiver. The following companies may be of help:
Have Fun,
Brooke Clarke, N6GCE
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Date: Thu, 08 Jul 2004 04:32:42 -0000
From: "computeruser04" <computeruser@...>
Subject: HP 3440A rear connectors
I have just acquired an old HP 3440A nixie tube rack mount DC voltmeter. Although I have the service manual for the 3440A, the rack mounted version is physically different from the one in the manual in a few ways. For one - there are no inputs on the front panel, just on the rear. There are 2 different BNC type jacks that I have never seen before. The ground is isolated from the chassis so there are actually 2 internal connectors along with the usual outer ground connector. Both jacks have these 2 internal contacts but both jacks are different styles. I've tried to look these up (google images etc) and have no idea what "type" they are so that I can get some kind of adaptor to use a BNC terminated probe or even banana terminated test leads.
Thanks
BL
