[NLRS] Tower coax switch vs. separate runs

[Jon Platt]

I would go with four runs of LMR-400.   KISS engineering.  Coax switches fail.  Also, you may want to listen to both 6 and 2m at the same time and a coax switch will not allow that.   Only really need to look at 2m losses .... 150' of LMR400 looks to be around 2.5 dB which is in the gray range, not bad, not great.  If you wanted too you could invest in something a bit better for just 2m, albeit you have to start to look at $$ vs saving 1 or 1.5 dB.   
Looking forward to working you with the new station !
73, JonW0ZQ

-----Original Message-----
From: Paul Beckmann <wa0rse at gmail.com>
To: NLRS at mailman.qth.net <NLRS at mailman.qth.net>
Sent: Sun, Jun 7, 2020 10:28 am
Subject: [NLRS] Tower coax switch vs. separate runs

Hello, everyone!

I've been tackling the many challenges/decisions of installing a
tower-based antenna system over the last number of months. One that has now
come into view is the connection between the antennas and the ground.
(Ground*ing* is another topic.) Here are relevant parameters:

Tower: 72' UST crank up
Distance from tower to shack: < 30'
Antennas:

TH5Mk2 tribander
Cushcraft WARC Yagi
6m Force12 LFA
2m Force12 LFA


So, do I run 4 pieces of coax up the tower or one with a tower switch? I'll
be running a KW on HF. I don't (yet) have mast-mounted preamps for 6 and 2.
I'm thinking of mast mounting my SSB transverters on the tower. Thoughts on
that?

As some of you know I've spent a ton of time over my ham radio days to
actually getting permission to put up a tower. Now that I have permission,
all of the dimensions of a high-quality installation have presented
themselves. Not a simple thing to do correctly...

73
--Paul, wa0rse
* Paul Beckmann*
*Vista Meadows Homestead*
*30125 719th Street*
*Lake Township, MN 55041*
*wa0rse at gmail.com <wa0rse at gmail.com>*
*612-414-0302 (cell, leave msg)*
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