Re: [TowerTalk] separation between 40m rotary dipole and 3 element beam

[N1BUG <paul@n1bug.com>]

The answer is likely "it depends on the specific antennas involved".

Last year I placed an OptiBeam OB1-4030 about 9 feet above my TH11DX. I 
did not rotate it 90 degrees. The elements are parallel. I am sure there 
is some interaction but I cannot notice a change in pattern or SWR on 
any band.
Paul N1BUG


On 3/18/22 17:24, Don wrote:
> My TH7DXX is at 72 feet. When I had a 2 el 40 up 6 feet above it I 
> experienced no _discernible_ negative affect on either. Surely there was 
> some, but not noticeable.
> Don W7WLL
>
> On 3/18/2022 2:00 PM, George Dubovsky wrote:
> > You will almost certainly have to orient the 40 m dipole at 90 degrees to
> > the beam (parallel with the tri-bander boom) to avoid interaction with 15
> > meters. 5' separation is usually enough.
> >
> > 73,
> >
> > geo - n4ua
> >
> > On Fri, Mar 18, 2022 at 4:36 PM Jamie WW3S<ww3s@zoominternet.net>  wrote:
> >
> > > What would be an acceptable separation between a 40m rotary dipole and a
> > > 3 element beam? I can maybe go 8 ft, 7 for sure......I'm fairly certain
> > > there would be some interaction, but would it be that critical ?
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