Not always so. Out in KH6, I had three KT36XAs at 30 60 and 90 feet which
were independently rotated from a 4 le M2 40 meter Yagi with linear
loading at 80 feet. As I rotated the 40 meter Yagi there would be no change
in
the SWR for 15 meter on the lower two, but on the upper one, 10 feet away,
the SWR would rise about .3-.4 depending which way they were facing. So
there was interaction.
Bill K4XS
In a message dated 6/2/2013 10:36:44 P.M. Coordinated Universal Time,
john@kk9a.com writes:
What 40m beam? If it has shortened elements it is probably not resonant
on
15m and I would not expect a problem. I have a 2el 40m Optibeam about 15'
below one of my homebrew 5el 15m beams and I do not see any interaction.
John KK9A
To:towertalk@contesting.com
Subject:[TowerTalk] 15 Meter and 40 Meter on the same tower?
From:Everett Jackson <wz8p@wz8p.com>
Date:Sun, 02 Jun 2013 11:26:12 -0400
List-post:<towertalk@contesting.com">mailto:towertalk@contesting.com>
I have a 135 ft rotating tower.
I am wanting to put a 5 element 15 meter beamon a 36 ft boom
and a 3 element 40 meter beam on a 46 ftboom on the same tower.
How much space is need between them? Or is this just not a good idea to
start with?
73,
Everett - WZ8P
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