This happens after a lightning strike. ________________________________ From: Topband <[email protected]> on behalf of Charles Otnott via Topband <[email protected]> Sent: Sunday, January 27, 2019 9:16 PM To: WW3S; [email protected] Subject: Re: Topband: Failed bulkhead connector
A speculation...cheap CHI-COMM product perhaps? I had a recent failure of a no-name brand of SO-239 bulkhead connector on a matching network for my 160M 0.5 wave Hertz antenna. A black scorch mark was very visible from the center pin across the insulation and to the mount. The connector was located inside of an environmentally controlled box. At no time did the swr at 1Kw exceed 1.5:1. If you can find true Amphenol silver plated antenna connectors, pay the price. I have never had one fail. The tarnish on the silver plate connectors is conductive, so no need to remove the patina. 73 Charlie WD5BHT -----Original Message----- >From: WW3S <[email protected]> >Sent: Jan 27, 2019 3:56 PM >To: [email protected] >Subject: Topband: Failed bulkhead connector > >Had a great start to the 160 contest, about 90 qsos the first hour, running >about 1200 w to my inverted L.....took a short break to grab a bite to eat, >first transmission after that tripped the swr protection in the amp....long >story short, after attempting to fix it in the dark, Saturday morning I found >the bulkhead connector on my radial plate failed....even though reception was >just fine, I couldn’t transmit, I think it failed open...replacing the >connector brought everything back to normal.....it may have been a cheap >connector , bought a few at Dayton ( won’t make that mistake again).....what >is it that causes them to fail? The insulation ? > >Sent from my iPad >_________________ >Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
