[TowerTalk] 4 square for 80

[N2TK, Tony]

Jim,
I agree with what you are saying. But I do not have much choice with 1/4
wave coax lines. Not enough coax to wind them through cores. That is why I
am asking about 3/4 wavelength to find out what I am really giving up over a
1/4 wave if really anything.
N2TK, Tony

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Jim
Brown
Sent: Friday, January 27, 2017 5:33 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] 4 square for 80

On Fri,1/27/2017 1:20 PM, N2TK, Tony wrote:
> Besides having beads at the feedpoints do I gain anything by putting beads
a the Comtek box? Noticeable improvement?

A string of #31 or #43 beads is next to useless at HF. Study
k9yc.com/RFI-Ham.pdf and see the "Cookbook" for recommendations of chokes
that DO work.

The purpose of a choke is to kill common mode current on the cable(s) on
which they are applied. That would, for example, prevent feedlines from
acting as radials, which could unbalance currents on the radials. It would
also prevent noise pickup on those feedlines.

73, Jim K9YC


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