Gery,

You shouldn't need a tuner on this antenna to get it  to work on 20 meters, 
or almost anywhere else for that matter.  If you have a high swr on 20 
meters without the tuner,  some of your power is getting  lost in the coax. 
If you have no radial system, most of  what is getting to the antenna is 
disappearing as ground losses.

Be sure you have the 20 meter matching line of 75 ohm coax installed, or 
things will never work right on 20 meters.   If your antenna is ground 
mounted, length of the radial wires isn't critical.  4 or 6 at 25 to 30 feet 
long is a good start and will be a thousand times better then nothing.

There is 1 simple adjustment to bring 20  meter resonance into line, but 
first you need to have the matching line and some radials  going.  Then 
measure the swr without the tuner at the top and bottom of the band to 
determine  how the coil tap needs to be changed.
   Once again, if you need a tuner to get a low swr on 20, something is way 
out of whack.

73, Steve KW3A


----- Original Message ----- 
From: "Gery Gaubert" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 11, 2010 11:03 AM
Subject: cross country net


> Steve, I did stick around, I heard the call for a transmition and tried 
> but=
> didn't get through.  I have an LDG antenna tuner and got an swr of about 
> 1=
> .5.  I had 100 watts out and reflective power of about 5 watts.  It seemed 
> =
> I had better reception when I had the vertical mounted on a pipe.  I 
> wonder=
> if I were to do this again and get the counter poise for the 6v if that 
> wo=
> uld help.  I had the antenna mounted on the pole when I wasn't licensed. 
> I=
> just listened.  I got the tw1 and my liecnse and the tuner and the swr 
> was=
> about 8 to 1.  I mounted the antenna in the ground and gave up reception 
> f=
> or transmition.
>
> Gery D. Gaubert
> Assistant, Information Technology Administrator
> St. Charles Parish Sheriff's Office
> office (985) 783-0208
> mobile 504-329-9439
> [log in to unmask]
>
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