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Re: Topband: Rather use N-type (was Re: The answer to PL-259

To: Frank Donovan <donovanf@starpower.net>, topband <topband@contesting.com>, Steve Maki <lists@oakcom.org>
Subject: Re: Topband: Rather use N-type (was Re: The answer to PL-259
From: Mike Waters <mikewate@gmail.com>
Date: Fri, 7 Dec 2018 19:56:32 -0600
List-post: <mailto:topband@contesting.com>
Thank you, Frank and Steve! I just learned something useful. :-)

I bought these N plugs in the early 1980s from Nemal Electronics. Perhaps
what you are describing was not available then? (That's a rhetorical
question. ;-)

If I ever get back on VHF/UHF, I'll get those.

73, Mike
www.w0btu.com


On Fri, Dec 7, 2018 at 7:26 PM <donovanf@starpower.net> wrote:

> Hi Mike,
>
> Captivated pin N connectors for hardline coax fits tightly over
> the center conductor.
>
> Captivated pin N connectors for flexible coax typically has a
> pin that requires solder.
>
> Floating pin N connectors belong in the trash bin.
>
> 73
> Frank
> W3LPL
>
> ------------------------------
> *From: *"Mike Waters" <mikewate@gmail.com>
> *To: *lists@oakcom.org
> *Cc: *"topband" <topband@contesting.com>
> *Sent: *Saturday, December 8, 2018 12:10:38 AM
> *Subject: *Re: Topband: Rather use N-type (was Re: The answer to PL-259
>
> The one I have in my hand has a solder hole in it. I take it that there are
> newer ones that have contacts that grip the coax center conductor?
>
> 73, Mike
> www.w0btu.com
>
> On Fri, Dec 7, 2018 at 6:04 PM Steve Maki <lists@oakcom.org> wrote:
>
> > Well here's the advantage of captivated center pins: the pin is NOT
> > bonded to the center conductor. IOW, if the coax center conductor
> > shrinks a bit, it can slide in the center pin and the pin stays put.
> >
> > And that's exactly what you want it to do - especially with an N
> connector.
> >
> > -Steve K8LX
> >
> >
> > On 12/07/18 14:25 PM, Mike Waters wrote:
> >
> > > Exactly my experience, even with captivated pins!! And my coax runs
> were
> > > only about 100' long.
> > >
> > > The captivating washers were made of Teflon®, *and Teflon cold flows*.
> > This
> > > was when I lived in Toledo, Ohio when the temperature dropped well
> below
> > > zero.
> > >
> > > Four photos of those N connectors are at
> > > http://www.w0btu.com/files/misc/N_plugs . See the last two.
> >
> > > On Fri, Dec 7, 2018, 1:02 PM Richard (Rick) Karlquist <
> > richard@karlquist.com>
> > > wrote:
> > >
> > >> My two 500 foot RG-216 military surplus cables both eventually
> exhibited
> > >> retracted pins on the type N connectors at both ends.  I replaced them
> > with
> > >> PL-259's.  ...  Success anecdotes about install once and never touch
> > again
> > >> commercial sites are probably not relevant to ham applications.
> >
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> >
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