[TowerTalk] Tall verticals

[Al Williams]

For emergency communications on either 80m or 160m, wouldn't a NVIS antenna
be best as well as the easiest and less costly?  I assume emergency
commnications is for the local area.  a NVIS dipole between .1 and .2
wavelength high cut to resonant length even if the ends are folded around
for a city lot would probably be more effective than a vertical.

k7puc


-----Original Message-----
From: DavidC <eDoc@netzero.net>
To: towertalk@contesting.com <towertalk@contesting.com>; n4kg@juno.com
<n4kg@juno.com>
Date: Wednesday, May 10, 2000 7:03 AM
Subject: Re: [TowerTalk] Tall verticals


>
>> > You specified "tall" towers.  What about a 65 foot Rohn 45
>> > tower with tri-banders at 45 and 70 feet?  Would the side-
>> > mounted beam problem be as pronounced on that?
>> >
>> Probably NOT.  It should work OK on 160.
>> Forget 80M.  Use a separate vertical.
>
>So, it would be about a 1/8 wave on 160?
>
>Why would it not work as a 1/4 wave on 80m?
>
>If I insulate the side-mounted beam by covering the mast with
>PVC will its proximity, even if electrically islolated, cause a
>problem?
>
>80m is far more important to me for emergency communications
>than is 160m.  Are there changes in the configuration of the
>tower and antennas that would make it more suitable to 80m
>use?  Must I eliminate the side-mounted beam entirely?
>
>> > I want to load it for 80m and want to make some choices
>> > about the type of base I use, where and how I side-mount
>> > antennas and anything else that may impact performance on
>> > 80m.  I have the tower but the pouring of the base has yet
>> > to be scheduled.
>
>- Thanks! & 73, DavidC  K1YP in Hudson, FL
>
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