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[TowerTalk] Fwd: Fwd: Fwd: sealing PL259's

To: towertalk@contesting.com
Subject: [TowerTalk] Fwd: Fwd: Fwd: sealing PL259's
From: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Reply-to: Hans Hammarquist <hanslg@aol.com>
Date: Thu, 28 May 2015 09:49:09 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Why use any excessive force on a knurled nut if it is not necessary. Yes, it is 
necessary for the PL-256 to ensure a reliable (sort of) connection. (That's why 
I don't like it.) You should not expect some repeated twisting motion on the 
connector unless it is a too short cable between your tower and your beam.


The rubber gaskets in the N and BNC connectors are mostly for weather sealing 
and only a very limited strain release. That's why you find additional release 
on military installations. Also you should consider the mechanical connection 
on the PL-256 as a more than limited strain release. Yeas, it might be stronger 
but that strong.


Hans - N2JFS



-----Original Message-----
From: Roger (K8RI) on TT <K8RI-on-TowerTalk@tm.net>
To: towertalk <towertalk@contesting.com>
Sent: Tue, May 26, 2015 7:54 pm
Subject: Re: [TowerTalk] Fwd:  Fwd:  sealing PL259's


Use a thin sheet of  Silicone rubber in a "U" shape inside the pliers to 
protect the connectors.  It works for me, but I'm often too impatient to worry 
about a cheap PL-259 (Even Silver plated Amphenols are cheap) BNCs are 
basically miniature N connectors, bur they lose a lot to scale and are 
veryweak.  I've never seen them used outdoors.  It tales little strength to 
pull the coax out of one, making them an interconnect only for me.

N are stronger, but not as strong as a properly soldered UHF connector. They 
weather proof, but don't ignore the Coax seal and tape.  The last "clamp" N 
Type I used, ended up with a dose of epoxy in the braid seal (the weak spot for 
strength) making them a one use only connector. Not quite as good as oil filter 
wrenches but I've never seen one of those wrenches that small.


 
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