[TowerTalk] PL-259 Electrical Joint Compound

Paul Christensen w9ac at arrl.net
Mon Dec 4 08:12:14 EST 2023


After 15 years, a pair of PL-259 connectors have seized on their mating
SO-239 jacks used on an outdoor RF choke. Is there anything more suitable
than Penatrox-A which is Au/Cu rated?  Ideally, I'd like to apply a
synthetic + conductive grease on the mating SO-239 threads.

 

Unrelated, but while investigating the coax connectors, the LMR400-Ultraflex
cable I installed about 15 years ago has started to decompose.  At the time
of installation, I knew the Ultraflex version has a shorter life span but
wasn't expecting such severe decomposition.  The jacket is crumbling due to
its rubber composition.  This past weekend, I replaced it with gelled
LMR400-DB for direct burial, but it's installed above ground.  Like the
original LMR400, the DB version has a rugged polyethylene (PE) jacket.  

 

Paul, W9AC    



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