There are several 4 square arrays in daily DX, and contesting, use in
W6-land. They all (that I'm familiar with)operate both SSB and CW. They use
tuning at the verticals to achieve both SSB & CW.
73
MAL
N7MAL
BULLHEAD CITY, AZ
http://www.n7mal.com
Everyone in the world is
entitled to be burdened
by my opinion
----- Original Message -----
From: Richard (Rick) Karlquist
To: w8zn@comcast.net
Cc: towertalk@contesting.com
Sent: Monday, March 16, 2009 19:41
Subject: Re: [TowerTalk] Bandwidth of a 1/4wl 80m vertical
I did a study of bandwidth vs diameter and there are 3 results:
1. Bandwidth increases fairly slowly with diameter.
2. No practical diameter is going to cover 3.5-4 MHz with a
fixed match.
3. Making the antenna fat lowers the radiation resistance, and
increases ground losses.
I'm going to stick with my 3 inch irrigation tubing, which is
3 inches mainly for mechanical reasons.
Rick N6RK
w8zn@comcast.net wrote:
>
> Hi all,
>
> To those running 80m 4 squares, what kind of bandwidth do you typically
> see? Is it about the same as a typical dipole or 1/4wl sloper? Does anyone
> know if using a larger radiator (such as Rohn 25 vs 3"/4" irragation pipe)
> gives broader bandwidth or is the diameter to wl ratio just too small to
> make any diff?
>
> thanks!!
>
> Terry
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