[Top] [All Lists]

[TowerTalk] Guy wires as inverted Vee?

To: <>
Subject: [TowerTalk] Guy wires as inverted Vee?
From: (
Date: Fri, 27 Apr 2001 14:06:23 -0600
On Fri, 27 Apr 2001  "Tim Makins,  EI8IC" <> writes:
> Try a full wave delta loop for 80m - much better than a vee in my 
> opinion.
> Tim, EI8IC

I believe an inverted vee will outperform a HORIZONTALLY POLARIZED
DELTA LOOP (fed at the apex or in the center of the bottom wire) with 
the same Apex Height since the EFFECTIVE Height of the Delta Loop 
is much lower due to the bottom wire being so close to the ground.

A VERTICALLY POLARIZED  Delta Loop IS a very effective DX antenna.
Feed 1/4 WL down from the Apex.  Note that an equilateral loop for 80M
is over 80 ft tall and thus must be "squished" to fit on a 70 ft tower,
have the bottom corners pulled out from the tower.  The pattern of a
vertically polarized Delta Loop is more nearly omni-directional (3 db
than an Inverted Vee.  Feed impedance is 100+ ohms which can be
matched with an odd number of wavelengths of 75 Ohm coax.  Loop
length should be made ~10 ft shorter than formula length due to
loading effects of the ground.

de  Tom  N4KG

Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:

List Sponsor: - Trylon self-supporting towers,
safety equipment, rigging gear, LOOS tension guages & more!

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>