David,
Just out of curiosity, why should the 40M beam be mounted *above* the
tribander? I have two friends locally who have identical 100' Rohn 45 towers
with stacked TH7 and Cushcraft 2-EL 40M beams. One has the TH7 on top and
the other has the 40M beam on top. No reason from the former. The latter
says he wanted the heavier beam on the bottom to reduce mast loading. Any
other good reasons to stack one over the other?
73, Dick, WC1M
-----Original Message-----
From: David L. Thompson . <thompson@mindspring.com>
To: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Wednesday, October 22, 1997 1:11 PM
Subject: Re: [TowerTalk] 4 square or yagi ??
>At 11:32 PM 10/20/97 -0500, Steve Narducci <nw9g@netusa1.net> wrote:
>>Has anyone really done some comparisons from using a 4 square system to a
>>shortened >2 element yagi up about 100 ft ?
>
>Steve,
>
>The Cushcraft 2 el 40 is usually better than a 4 square. (80' up +). The
>40 should be mounted by itself or above a 20 to 10 beam! If you can keep
>both you will find times when the 4 square is better or you can use the 4
>square to quickly pick up mults while running DX with the beam. Never
hurts
>to have more than one antenna.
>
>For 80/75, the 2el must be as good as the 2 el Cushcraft 40 to make a
>similiar comparision. Plus the height must be well over 100'. I had a 2el
>HB9CV up with a Create reflector and a G3PTV square dipole (1963 CQ W6SAI
>column) for the radiator (looked like 3 el 40 short beam). Worked better
>than my EDZ and various wires and was only down 1S unit from K4JPD on the
>UA9/JT1. The beam was only at 70' and was big enough to get wind damage so
>its in my basement now. Compared well with W4DR and others using 4 squares
>from defunct Co-latch-co. Even loaded on 160 (worked a JA or two). Turned
>in two decent CQ 160 SSB scores with it and a top GA CW 160 score with a
>guest op/call in late 80's.
>
>73, Dave K4JRB
>Contesting and Dxing from 1/2 acre lot
>
>
>--
>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
>Submissions: towertalk@contesting.com
>Administrative requests: towertalk-REQUEST@contesting.com
>Problems: owner-towertalk@contesting.com
>Search: http://www.contesting.com/km9p/search
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search
|