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[Towertalk] Inverted "L" on 40/80?

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Subject: [Towertalk] Inverted "L" on 40/80?
From: (
Date: Tue, 9 Jul 2002 14:28:02 -0600
On Tue, 09 Jul 2002 "Gene A. Williamson" <> writes:
> All this discussion of HF2V, radials, etc. causes me to  wonder: 
> if the inverted "L" is so great for 160, why isn't it used on 40 and
> 73 Gene N7YW

The main problem on 160M is the size of a 1/4 WL vertical (130 ft).
The inverted L is a useful alternative that allows shorter supports to
be used for that band.  One down side to the inverted L is that it 
also has significant radiation (and reception) from the horizontal
component at higher angles.  Note that the inverted L is merely
an unsymmetrical form of Top Loading.

Inverted L's have been used successfully on 80M as well but self
supported top loading is often preferred, partly to eliminate the high 
angle radiation and partly to eliminate the need for a second support 
tie point.  

On 40M, a full size vertical is only 32 ft tall and small top loaded
verticals are easily constructed.

Tom  N4KG

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