I have multiple boxes on the towers, one for each band. There are many
different ways to do this. Without seeing your setup I won't comment other
than to say that Hoffman makes very nice outdoor enclosures.
John KK9A
To: towertalk@contesting.com
Subject: [TowerTalk] NEMA Box for poly phaser and Coax connections
From: CEPitts <cpitts@ec.rr.com>
Date: Sun, 31 Dec 2017 14:40:14 -0500
First time poster so please excuse if I do not do this correctly:
Rotating Tower
I know bigger is always bigger than smaller due to possibly having to add
items *(Box size)*
I will have 7/8 " cell flex hard line entering box to feed a WX0B six way
switch as well as a WX0B stackmatch to three antennas (2 tribanders 40-10M
and one 6m beam ) on tower as well as wire dipoles for 80M and 160M. The
wire antennas hung from 60-80 foot pines as well as the 160M Inv L.
Also one rotor control cable and two control lines for the six way switch &
stack match.
As far as lightning protection looking at installing some polyphaser
components to protect everything
Questions are is it wise and cost effective to place all in one box? if so
what size?
If not should I place all coax feeds both the incoming 7/8" cell flex hard
line and feeds to all of the antennas on the tower & to the dipoles/Inv L in
one box with all of the switching components (WX0B)?
And all of the polyphaser in another box?
I'm all about eliminating loss so what is a good flexible jumper to use from
the 7/8" hardline going to the box to transition to the three antennas on
the rotating tower? In other words jumpers from the six way
switch/stackmatch and eventually out to the rotating tower
Frank W3LPL says the Davis Is some of the best and I have 1000 feet of it,
ie regular coax the size that is 213, will that be good enough going up the
tower to the three antennas I plan on putting there or there is a
alternative great flexible feed to feed those antennas to further mitigate
any losses to those antennas.
My hard line run to the tower from the shack is approx 800 feet. I have the
cell flex hard line already. it goes from 1 1/4" down to the 7/8"
So 1 or 2 boxes? Any recommendations on size? any recommendations on
manufacture/brand/terminal strips needed?
A lot here and if some would like to comment and or add thoughts
suggestions without tying up the reflector unless there comments help others
please contact off line
cpitts@ec.rr.com
K5OF, Charles "Ed"
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