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[Towertalk] Fw: TH7DX Gain Measurements / Improvements

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Subject: [Towertalk] Fw: TH7DX Gain Measurements / Improvements
From: (Rick Bullon)
Date: Mon, 29 Jul 2002 17:07:25 +0000
Hello Tom
What I did on my TH-6DXX's was split the difference between high phone and 
low phone. I have a acceptable >2:1 swr over the whole phone band on 10 15 
  I don't know what it did to the gain on the antenna and I wouldn't know 
how to measure it ( I'm not an antenna guru not you :-) ) but it looks good 
on the antenna analyzer (MFJ 259B). I will have to let you know how it works 
after I get all the rest on the coax and control lines run to the shack.

----Original Message Follows----
Subject: Re: [Towertalk] Fw: TH7DX  Gain Measurements / Improvements
To: <>
Date: Mon, 29 Jul 2002 09:43:06 -0600

Since posting Roger Cox's enhanced TH7 dimensions,
I've received a few inquiries about TH6 performance so
here is my response to that question.

The TH6 manual has dimensions for CW, LOW PHONE,
and HIGH PHONE so it can be peaked in the desired protion
of the band.

The TH7 was designed to cover ALL of 10M which resulted
in the 3 dB gain slope that has maximum gain at 29.7 MHz
using the standard dimensions.

Tom  N4KG

On Mon, 29 Jul 2002 07:58:20 -0700 (PDT) GALE STEWARD <>
 > Hi Tom,
 > Just wondering if you know if the TH6 suffers from the
 > same problem on 10M! I've had one up for years and
 > never really noticed a lack of punch on 10M CW. It
 > still could be down on gain, however!
 > 73, Stew, K3ND


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