Vintage Gremar Female BNC Connector Identification?

[shrtrnd]

I have a bag full of these. The bag is stamped Gremar 16603, the connector itself is stamped SAI384090.
Gremar Woburn, Massachusettes
Tried Google, can't even find existence of the company anymore, let alone the connector, assume company was bought by somebody
else (Maybe Glenair), that doesn't even list it anymore.
Anybody care to take a guess if this is a 50 or 75 Ohm BNC connector? It's a female BNC-to-wire connector.
I know Gremar used to make a lot of Tektronix BNCs for old O'scopes, so I'm leaning toward a 50 Ohm, but don't know.
Thanks for looking.

 

[H2814D]

Post a picture.

 

[kellys_eye]

75 ohm connectors typically have TEFLON (soft) as the insulation whereas 50 ohm use DELRIN (hard).

 

[shrtrnd]

I'll see if I can remember how to do the picture posting, and post it here later.
My experience with 50 ohm and 75 ohm BNC differences, is the diameter of the center-pin connection.
When you plug the larger center-pin into the other smaller BNC socket, you widen the center-socket and create
an unreliable connection.
I'll try that again with my tired old eyes if all else fails in identifying these vintage connectors.
(Although there are also several different depths of BNC center barrels, so you have to watch out for that also)

 

[kellys_eye]

My experience with 50 ohm and 75 ohm BNC differences, is the diameter of the center-pin connection.

That is also a truism.

 

[Harald Kapp]

Drag and drop:

 

[shrtrnd]

Thanks Harald,
I'm pretty good at opening a chassis up and knowing what's going inside the guts.
It's the outsides of these electronic contraptions I have trouble with.

 

[shrtrnd]

I didn't forget about this, I'll work on it when I have time.
I don't know what good a picture will do, it looks like any other BNC at a glance,
but I'll get to it (sometime).
I've always hated it when obsolete part information can't be found anymore.