[Antennas] Vertical

[John Luthy]

HI Jim.

My first thought was to use the tower, however you would need a nice
ground network for it to work, you can't lay out any gorunds? .

Next thought would be to use the tower as the "ground" half of a
sloper. with a SGC smartuner at the top of the tower. The really nice
thing about the smart runer is that it is normaly mounted at the
antenna feedpoint. giving 50 ohms to the feed line so there is almost
no feedline loss! Unlike using a tuner in the shack to try to match a
5:1 antenna with 100 feet of feedline where most of the RF vanishes
before it gets to the antenna.  The down side ( you knew there had to
be a trade off somewhere) is the smart tuner is NOT rated for high
power.

I have 2 smart tuners, one for the house and one I use for camping,
The one I use at the house is feeding an inverted L that is equal to
or beter than my Mosley TA-33 (the mo wins on 15m) and of course can't
even do 12,17,30,40,80,160m  The smart tuner can. The smart tuner I
use for camping works quite well. I try to find a tree to send the
antenna up and then spread out a few wires for grounds. It works quite
well with my IC 706. On my last camping trip I worked VK from the
Yosomite valley on 75m , allong with most of the US.

Try to find a friend with one and see if you can borrow it for a test,
I think you will be pleased with it's performance. Also you will find
that the "box " is more affordable than many Multi-band dummy loads.
I had a cushcra |* r-7000 that was suposed to be an antenna but turned
out to be a nice 50 ohm load for my transmiter, Untill I tried to use
it on 40m for a RTTY contest then it turned in to a very tall smoke
genarator

One more plus is the smart tuner will tune most any thing any where!
even a school bus on the new 60m band.  Most internal tuners will not
tune at all on 60m (or anywhere else)  ;-)

If you look at the antenna books you will find that the most difficult
part of building any antenna is the matching/loading network. With the
smart tuner you just put up the wire, hook up the tuner and enjoy.  It
don't get any easier than that.  And it just plain works.

Good DX

John
KF6QCQ

----- Original Message ----- 
From: "Jim Lindberg" <jimlindy1@mchsi.com>
To: <antennas@mailman.qth.net>
Sent: Thursday, November 20, 2003 9:05 AM
Subject: [Antennas] Vertical


> I am wondering if anyone one the list has had any luck using one of
the
> better known verticals such as Butternut, Gap, Cushcraft  ect
without
> radials? I have a tower I can crank up to about 40 feet but no room
for
> radials. I have a autotuner for my ham radio but I also want to use
it
> for SWLING.
> Any ideas?
> Thanks,
> Jim
>
> - - -
>
> Your moderator for this list is:
> Larry Wilson KE1HZ antennas-owner@mailman.qth.net
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