[TowerTalk] N connectors pulling off

[Jim W7RY]

Simple

Solder the braid to the retaining ring. Or use crimp on connectors.


73
Jim W7RY

At 10:22 PM 1/17/2005, Bill VanAlstyne, W5WVO wrote:
>The thread on PL-259s has been very instructive, and appreciated. But I'm
>having problems with genuine Amphenol N connectors (clamp/solder type)
>installed on Belden 9913F7 coax. And yes, I did buy the type of N connector
>specified for this cable type (82-202-1006, as opposed to the 82-202
>characterized for RG-8).
>
>Problem is, the connectors seem to pull off very easily, especially after
>they have been installed for a year or so. My preliminary hypothesis is that
>the dielectric, braid shield, and jacket gradually "shrink back" from the
>center conductor, which (since the center conductor, when mated with a
>receptacle, can't go forward) tends to pull the braid out of the grasp of
>the threaded-on clamp that is supposed to secure it. And so the connector
>pulls off easily. I believe that this is what's happening because, when I
>reassemble the connector to the cable end without recutting anything, the
>center conductor pin protrudes further forward than it is supposed to --
>further than it did when originally installed. Then, when I screw the
>connector onto its mating receptacle, the center pin and cable body are
>forced backward, pulling the braid out of the connector clamp. At least,
>this is what I THINK is happening.
>
>I'm wondering if anyone else has experienced this problem with N connectors,
>and if so, is it just with this type of coax/connector I'm using, or is this
>phenomenon common to all N connectors and coax of this size. And, of course,
>is there a "fix" that will prevent this from happening? Is there a better
>way to install clamp/solder N connectors than the method specified by
>Amphenol? Are the crimp-on N connectors better? If so, how much does the
>crimping tool cost?
>
>Bill / W5WVO
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