[Lowfer] No luck with - JH

[pbunn at patbunn.com]

I would recommend reading the excellent QEX articles on radials  that were 
published over the last few years. They did extensive testing with short, 
long and skewed radials as well as elevated radials.

Pat
N4LTA

-----Original Message----- 
From: Garry Hess
Sent: Saturday, December 01, 2012 8:12 PM
To: lowfer list
Subject: Re: [Lowfer] No luck with - JH

> Ground rods are not a substitute for radials. At lf,  they need to be as 
> long as you can make them
and as many as you can afford.

I beg to disagree. Page 3 of The Lowdown, July 1980 article by Ed
Phillips (available for download at
http://www.maxmcarter.com/lwantennas/index.html) cites the following
conclusions of E.A.Laporte's 1952 study of ground systems:

(1) "... radials of length equal to the antenna height are almost as
good as those of infinite length, and that a length of half the antenna
height (outside diameter of radial system equal to antenna height) is
about 2/3 as effective as very great length."

and

(2) "... 2 radials are about half as good as a very large number, and 16
radials are within a few percent of being as good as 112.

Thus, one need not fear that thousands of feet of radials are necessary
to produce a lowfer that can be heard out of the back yard. I'm quite
happy with the performance of my lowfer vertical antenna of 35' height,
15' tophat, and 8 x 35' radials (4 of which are terminated by 4' ground
rods; a pair of 8' ground rods are located at the antenna base).

-- 
73, Garry, K3SIW, EN52ta, Elgin, IL
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