[Elecraft] Array Solutions Lightning Arrestor

[Don Wilhelm]

I is not always thermal related.  Center pin retraction can also be 
caused by stress on the coax.  I have seen many N male connectors where 
the shield has slipped in the clamp due to tension on the coax (from the 
weight of hanging or perhaps other causes).  I routinely do 2 things - 
1) put a bead of silicone seal around the coax to top of the N connector 
junction, and 2) support the coax in some manner about 12 inches from 
the connector.

If the shield slips in the connector body, the most obvious result is 
center pin retraction, but it may also be that the shield has broken (or 
hanging on by a thread) allowing the coax to come partially out of the 
connector.

The same problem can be found in BNC connectors.

In other words, do not let the connector take the stress of the hanging 
coax weight.

Well soldered UHF connectors do not have that problem.

73,
Don W3FPR

On 1/23/2018 5:27 PM, john at kk9a.com wrote:
> Pin retraction may depend on your coax. I use a number of N connectors and I
> have not seen this occur with Belden 8267 or with the various sizes of
> Heliax at my station.
> 
> John KK9A
>