[TowerTalk] Questions

[john at kk9a.com]

I concur that using the same cable from the radio to the antenna 270 feet
away is a poor choice. Some cables are flexible and some have lower
losses. I was going to make a similar suggestion when I initially read the
post. I have many very different cables going from the shack to the
antenna.

It sounds like your stacking relays are mounted up the tower.  While
slightly more costly to install, I think that they are better at ground
level.  It is much easier to check for individual antenna problems and
relay issues while standing on the ground.

John KK9A


To:	<towertalk at contesting.com>
Subject:	Re: [TowerTalk] Questions
From:	"Ed Sawyer" <sawyered at earthlink.net>
Reply-to:	sawyered at earthlink.net
Date:	Wed, 31 Aug 2016 01:23:52 -0400


I think it's a mistake to run the same cable for 270ft for this application.
I would run the lowest loss you can afford for the main run - LDF4 or LMR600
and then shift to a more flexible cable at the tower - LMR400flex or worst
case RG213.



I run 3 sets of coaxes for my systems.  LDF5 from the shack to the switching
at the towers.  LDF4 from there to the stack matches and them LMR400flex
from the stack matches to the beams.



Ed  N1UR