[Elecraft] OT: Type N male pin movement

[Ken G Kopp]

UG-1185's have captive center pins to avoid this problem.

Caution: There are two ways the Teflon spacers can be assembled.  The
recessed sides face outward.

73 !

K0PP

On Tue, Sep 18, 2018, 09:30 Dr. William J. Schmidt <bill at wjschmidt.com>
wrote:

>
> [[The next time someone challenges me on why I only use BNC and Type N
> connectors, I’m going to send them this entire discussion.]]
>
> Unfortunately this is not perfect either.  If you use an "N" connector on
> long runs of heliax in a cold climate, you must be aware that the
> coefficients of expansion of the center conductor and the shield can be
> different... and on several occasions, I have seen the center pin pull back
> from the connector (and essentially disconnect) because the center
> conductor contracted more than the shield.  Nb. This does not happen with
> all "N" connectors.  This is less of a problem with BNC connectors because
> the coax used is generally has a somewhat flexible shield.
>
>
>
>
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