[TowerTalk] Shunt feeding tower with stacked tribanders for 160

[Pete Michaelis - N8TR]

Pete,  It works just fine here.  My tower is 100' tall with 3 sets of EHS
guys well broken up with insulators.  At about 108' is a 40-2CD 2 element
40 meter beam.   I have a KT34XA at 100', another KT34XA on a
Ringrotor at 64', and a  third  XA at 32' on a swing-arm sidemount.  There
are 4 ropes from the top  of the tower  to various tie points that support
the 4 vertical wires that make up my 80m 4-sq.   I shunt feed the tower
for 160m at about 62' using  4 wires in a  small cage configuration.   I have
36 1/4 wave ground radials for 160.  Also each of the 4  80m wire
verticals has 36 radials.

I am very pleased with the performance on 160m.  I generally compete
in the CQ 160m SSB contest in the M/S class with several friends
from the local DX club (NODXA).   We usually do pretty well.  Also  many
of the major DX expeditions have been worked on 160.

I did originally try to use elevated radials but it just did not work all
that well.  The ground radials made a big difference here.

I would some day like to computer model the entire system but that will
have to wait till I have software that can handle more than 500 segments.

Give shunt feeding a try and see what happens.

73 Pete - N8TR


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