[TowerTalk] 80/40 coax trap dipole design

[DJ7WW]

Of course, a 40m delta loop, dipole or vertical works nicely on 15m

73
Peter

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Rik van Riel
Sent: Donnerstag, 16. Dezember 2010 17:52
To: towertalk at contesting.com
Subject: Re: [TowerTalk] 80/40 coax trap dipole design

On 12/15/2010 09:21 AM, DJ7WW wrote:
> It will not work on two bands without a trap

There are good examples of antennas that work well on
two bands without a trap.

For example, the 2m / 70cm verticals, which are a little
short to be 1/4 wave verticals on 2m (the coil acts as a
loading coil) and 5/8 wave verticals on 70cm (the coil
acts as a matching coil).

I imagine similar things are possible on HF.

-- 
All rights reversed.
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