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[TowerTalk] antenna gain

To: <>
Subject: [TowerTalk] antenna gain
From: (Paul M. Elliott)
Date: Sun, 6 Jul 1997 10:49:27 -0400
Having the ARRL set gain measurement standards would be the flip side of
what would happen if Consumer Reports ran ads from the car manufacturers. 
There would be inevitable conflict of interest in both cases.

73 - Paul N3GPU

> From:
> To:
> Subject: [TowerTalk] antenna gain
To: <>
> Date: Saturday, July 05, 1997 11:43 PM
> All of the big antenna manufacturers have modeling software by now. So,
> all have a good idea what the gain of their antennas are. It is way past
> for the ARRL to take charge of this problem and set some standards for
> antenna gain so we can all make informed decisions on antenna purchases
> designs for homebrew).
> If they would take control of this problem, we could see some believable
> antenna gains in advertising and see gains published in QST ads.
> Without this important oversight, we have to "wing it" as best we can. In
> own modeling experience, I have found that as gain goes, it is
> to boom length in properly designed yagis. In fact, gain differences seem
> very closely tied to 8.5 times the log (base 10) of longer boom length
> divided by shorter  boom length. This would make the KT34XA have 1.06 db
> gain than the TH7DX. W4RNL can give us some input on this aspect of the
> problem. What say L.B.?
> There is a lot of horsepower in this group. What say some of it be
> toward the league to suggest they take this problem on? Write your ARRL
> (or e-mail him) today and do your part for truth in advertising! 
> 73 de Gerald Williamson, K5GW
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