I see a connector covered with heatshrink and no shield pulling away. ????
Jim W7RY
--------------------------------------------------
From: "Peter Dougherty" <w2irt@verizon.net>
Sent: Saturday, February 12, 2011 8:36 AM
To: "'Michael W5NIG'" <tower@coffeepower.net>; <towertalk@contesting.com>
Subject: Re: [TowerTalk] Crimp-on PL259 et al
> Here are two photos of what I mean by crimp-on PL-259s failing.
>
> http://s291.photobucket.com/albums/ll290/W2IRT/Towers%20and%20Antennas/?acti
> on=view¤t=Crimp-fail-1.jpg
> http://s291.photobucket.com/albums/ll290/W2IRT/Towers%20and%20Antennas/?acti
> on=view¤t=Crimp-fail-3.jpg
>
> You can see the braid/ferrule has pulled back from the main part of the
> connector. When installed this was flush against the body of the
> connector.
> Eventually this will pull right off. If I hadn't soldered the center
> conductor in (some are intended to just crimp on) the coax would pull
> right
> out of the connector. When, in the middle of CQWW 2009, my 160 TX antenna
> had failed I went outside and found the coax laying on the sodden ground
> having failed exactly in that manner.
>
> After the contest was over I pulled somewhat-gently on every coax sticking
> down from the Ameritron antenna switchbox and two more pulled apart. At
> that
> point I still trusted the connectors, but I insisted on soldering the
> centers after that. When more failed inside the shack, on patch cables,
> etc,
> I gave up and went back to solder-only.
>
>
> ------
>
> - pjd
>
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Michael W5NIG
> Sent: Saturday, February 12, 2011 9:17 AM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Crimp-on PL259 et al
>
> ***Quote***
> Date: Fri, 11 Feb 2011 17:39:52 -0500
> From: "Peter Dougherty" <w2irt@verizon.net>
> Subject: Re: [TowerTalk] Crimp-on PL259
> To: <nf4l@nf4l.com>, "'towertalk reflector'"
> <towertalk@contesting.com>
> Message-ID: <018401cbca3c$99d3e380$cd7baa80$@net>
>
> Mike, I have to say my experiences with crimp-on connectors has ranged
> from
> convenient to catastrophic failure, with the latter being commonplace. I'd
> say about 75% of the crimp connectors have failed within the three years
> they've been installed, both inside and outside. Once any stress goes on
> the
> cable (just gravity for the most part), it's just been a matter of time
> before it fails in my experience. I'm using connectors from The RF
> Connection as well as the crimp tool they provided and I use a cable-prep
> tool from DX Engineering. This summer all my remaining crimp-on connectors
> will be cut off and new solder-type (inside) and clamp-type connectors
> (outside) will go on instead. I'm quite intrigued about this new clamp
> type
> and I'd personally like to get more first-hand experiences before
> shotgunning out all the existing connectors.
>
> ***UnQuote***
>
> Very interesting! I've been using a coax prep tool for quite a while
> now,
> it's a
> love/hate relationship, hi hi. works well though, all in all. I just
> bought a crimp
> tool with the extra set of jaws at the last hamfest that I attended. I
> haven't had
> opportunity yet to us one on regular rg8 or 213 but have had the pleasure
> of
>
> installing
> a few on 8x. I've got to say Im impressed with it in that capacity! good
> compression
> on the shield and great tension on the jacket. Usually the thing is
> subject
>
> to twisting
> etc and if the coax is moving a lot I eventually might have issues with
> it.
> I"ll be testing
> it on 8/213 coax at easy to get to places to see how it goes when I get
> back
>
> on my tower
> project!
>
> Michael de W5NIG
>
>
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