In my professional work before I retired in 2009, I used N-connectors
as much as possible. Some commercial VHF marine radios and the CB
radios (required on our boats) had UHF connectors so I bought
Amphenol PL-259's for them. I bought antennas that had N connectors.
Sealing on boats I used a combination of Scotch-70 (gray annealing
tape) covered either by heat shrink or scotch-33+ black
tape. Scotch-70 cost $30 per roll so probably too expensive for hams
but it cut easily with a knife and never stuck onto the connector
like coax seal. For tower lines (typically Heliax hardline) the
connectors were supplied with heat shrink that had sealant goo inside.
For my ham tower work I had added a coating of Scotch-Kote over
heat-shrink or Scotch-33+ which never has failed sealing. For awhile
I was using Scotch-88 but 33+ has more stretch and better adhesive in
cold climates.
73, Ed - KL7UW
http://www.kl7uw.com
[email protected]
"Kits made by KL7UW"
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