I just can't help opionionating about PL-259's..... in general.

Hand tightening is not sufficient..... maybe in a test situation, but if you
are going to walk away from them, tightening with your choice of pliers.

Standard PL-259's are not waterproof, and anywhere that safety or
reliability is necessary, they've got to be sealed with something. My
personal favorite is a couple of coats of "Liquid Tape"... available in your
choice of colors.

Someone already mentioned that these connectors, outdoors especially, are
frequently "repaired" or at least work better if taken off and reinstalled
once in a while. It is an eye-opener how many antenna installations suddenly
work a lot better after doing just that.

There is a lot more, but the lawn needs mowing..... NOW!

Old Chief Lynn