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[TowerTalk] Connector insertion loss

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Subject: [TowerTalk] Connector insertion loss
From: (Keith Morehouse)
Date: Tue, 02 Sep 1997 10:33:15 -0500
Rod Fitz-Randolph wrote:
> I, and others before me, have had trouble with N connectors in that
> the center conductor of the N connector is soldered to (and therefore
> physically connected to) the center conductor of the coax.
> Unfortunately, the cold can sometimes cause the center conductor to 
> contract more than the outer conductor (coax) and causes the pin to 
> retract and sometimes pull away from the female connector's center 
> conductor. 

Newer design N connectors no longer have this problem.  There are two
teflon rings that captivate the center conductor to the connector body.

Yes - the original 1950's (1940's ??) UG-23 failed quickly under temp
cycle conditions.

BTW & FWIW - the rule of thumb I always followed at microwave
frequencies was to consider each MATED pair of connectors as 0.1 dB of
loss.  At frequencies below 1 GHz, it was considerably less...

PROBE ELECTRONICS 100 Higgins Road, Park Ridge IL 60068 USA
Keith J. Morehouse /  W9RM  / Society of Midwest Contesters
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