[Antennas] tuning a TH6DXX

Sat Jun 11 17:51:54 EDT 2005

This is a common and fairly accurate practice... point the antenna straight 
up... the ground acts more-or-less like a perfect reflector.
Sincerely,
Dr. William J. Schmidt, II K9HZ
Trustee of the North American QRO - Central Division Club - K9ZC
Email: bill at wjschmidt.com
WebPage: www.wjschmidt.com
"If computers get too powerful, we can organize them into a committee; that 
will do them in." -- Bradley's Bromide
----- Original Message ----- 
From: "Deon Erwin" <zs1zl at telkomsa.net>
To: "John Luthy" <jluthy at worldnet.att.net>; <Antennas at mailman.qth.net>
Sent: Saturday, June 11, 2005 3:28 PM
Subject: Re: [Antennas] tuning a TH6DXX
>I also mounted my TH7DXX pointing straight up to the sky and my antenna
> analyser indicated that the factory settings were spot-on.
>> Of all the methods that I have used in the past to tune yagis, this method
> is the easiest, most accurate and consistent.
>> Deon ZS1ZL
>> ----- Original Message -----
> From: <paul at w8aef.com>
> To: "John Luthy" <jluthy at worldnet.att.net>; <Antennas at mailman.qth.net>
> Sent: Friday, June 10, 2005 5:21 AM
> Subject: Re: [Antennas] tuning a TH6DXX
>>> I suspect there may be something under the surface of the roof that is
> messing you up. I would move it back to the ground and point it straight 
> up
> for the SWR observations. Stick a tube or something in the rear end of 
> the
> mast to keep the reflector up off the ground and use some rope to hold it
> vertical.
>> This is the method I have used on all of my yagi's and it works great. 
> The
> 4 element 20m monobander on the 41 foot boom was a challenge, but it did
> work.
>> And my observations held when I got the antennas on the tower.
>> de Paul, W8AEF
>> ----- Original Message -----
> From: "John Luthy" <jluthy at worldnet.att.net>
> To: <Antennas at mailman.qth.net>
> Sent: Friday, June 10, 2005 1:00 AM
> Subject: [Antennas] tuning a TH6DXX
>>>>I need advice on tuning this antenna TH6DXX I have followed the
>> instructions very carefully to set it in the phone band, However the
>> 20m "sweet spot" is in the cw portion. Here are the frequencys where
>> I get the lowest SWR
>> ______________________________________________________________
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