Trim the longest dipole first.
David
HK1A
EC5KXA
> From: ersmar@verizon.net
> To: towertalk@contesting.com
> Date: Wed, 24 Mar 2010 23:42:36 -0400
> Subject: Re: [TowerTalk] 40/80m dipole
>
> Dan:
>
> I concur with Don's recommendation about using two dipoles on the same
> feedline. I used this arrangement (with a third dipole for 20M) during my
> Novice days and it worked well for me. The non-resonant dipoles aren't even
> seen by the one your operating on. Just leave enough wire at the ends of
> each dipole for trimming.
>
> 73 de
> Gene Smar AD3F
>
>
> ----- Original Message -----
> From: <n8de@thepoint.net>
> To: "Tower and HF antenna construction topics." <towertalk@contesting.com>;
> "Dan" <n5ar@air-pipe.com>
> Cc: <TowerTalk@contesting.com>
> Sent: Wednesday, March 24, 2010 11:01 PM
> Subject: Re: [TowerTalk] 40/80m dipole
>
>
> > Dan,
> > How about two parallel dipoles from the same feedpoint with the 80m
> > dipole strung between the 90' supports and about 20' at each end
> > hanging down. The 40m dipole could then be 'fanned' downward from the
> > feedpoint and tied to the same end support as the 80m dipole.
> >
> > -------------------()-----------------
> > | |
> > | ^ | this would be the 80m dipole.
> > | ^ |
> > | ^ |
> > x 40m dipole attached x
> > at this same feedpoint with
> > ends drooping down towards points
> > marked 'x' where both dipoles are tied off.
> >
> > Don
> > N8DE
> >
> >
> > Quoting Dan <n5ar@air-pipe.com>:
> >
> >> I would like to build and send to my son a coil loaded dipole for
> >> 80/40m. He has about 90 feet space to hang it in. Has anyone information
> >> on loading coil values and placement in the 90 ft dipole?
> >>
> >> Tnx, Dan, N5AR
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