What is this connector?

[mddpub]

What type of connector is CN2?  I have not seen this type of test point before.    It is very small, perhaps 3.5mm wide.  I need an adapter or cable to BNC male so I can attach to a spectrum analyzer to tune a band pass filter on this board.

[bob91343]

That looks like a common connector on many transceivers.  I think they are called something like SMx where the x is a letter other than A or B.  My Kenwood rigs use those.

[K7SJB]

Humm,
I'm not sure, but it just might be a probe attachment test-point. Im sure Tektronix and quite likely HP made versions of these. I will include a pictures to show you what I'm talking about. Plus, I found this Tektronix data sheet.
Don't you just love that homemade test-point? I have to wonder how many readers will start using that trick!
- Stan

[CJay]

Looks kinda Taiko Denki to me.

[mddpub]

Bingo, it's a Taiko Denki aka a TMP connector.   Thanks very much!
I google'd it and found this company, sent them the photo and they confirmed it.  https://rfconnection.com/tmp-tmp-cables-taiko-denki-connectors/