N connector; was Jones plugs, or similar sorts of plugs

[Scanning]

There are two types of N connectors, one for 50 Ohms and one for 75 Ohms.
The N connector is controlled by MIL-C-39012.



50 Ohm N type connector center pin - 0.0650 ± 0.0005



75 Ohm N type connector center pin - 0.0355 ± 0.0005



Plugging a 50 Ohm male connector into a 75 Ohm female will damage it.



Plugging a 75 Ohm male connector into a 50 Ohm female will provide a crappy
connection.



Best regards, Steven





----- Original Message -----
From: "Tony Duell" <ard at p850ug1.demon.co.uk>
To: <cctalk at classiccmp.org>
Sent: Monday, May 25, 2009 10:57 AM
Subject: Re: Jones plugs, or similar sorts of plugs


> >
> > N connectors suffer a fatal flaw - use the wrong plug in the wrong
> > socket, and you are screwed. Mixing 50 and 75 Ohm Ns will either
> > result in a crummy connection or a possibly ruined part.
>
> I asusme this is due to a different diameter central pin -- small pin in
> large socket causes a bad connection, large pin in small socket wrecks th
> socket.
>
> I've heard this claimed of BNCs too, but I've seen measurements made on
> new, good-qulaity BNC plugs (Amphenol, Greenpar, etc) which indicate the
> central pins are the same diameter and there is no possiblilty of damage
> by using the 'wrong' plug. Has anyone got measurements for N connectors?
>
> -tony