[Moon-net] LMR

[Ken]

I have had some issues with LMR and moisture - TM say on their web site that some moisture will inevitably get in.
The UF version has a very soft jacket which I think is not as good a moisture barrier as the more solid jacket.

The aluminum foil shielding seems to corrode quickly if exposed to moisture. There may be some galvanic action going on with the braided wire shield which, of course, is a different metal, with a different galvanic potential.

Times make a -DB version (direct burial) which I would recommend for ALL outdoor use. It has some sticky stuff in the braid which is supposed to be hydrophobic. It seems to do the job.

Of course, if you can afford it, the solid copper jacket heliax is one way to really keep moisture out. 

BTW here I run 1500W out on 432 into LMR600 for the run inside the house and it handles it fine. 
Connectors are an issue at that freq and power.....

GL
Ken