Great Point Steve-I have an old pre-MFJ HyGain 205BA that I used for years.
The instruction book for it states that it has 9.4 dbd of gain.
Realistically I think modeling shows it to be around 6dbd or a little
better. It does a great job but again-their gain figures are a little
skewed. Your book shed a lot of light on antenna comparisons!
73,
Steve, WD8NPL
-----Original Message-----
From: K7LXC--- via TowerTalk
Sent: Sunday, June 22, 2014 11:35 AM
To: towertalk@contesting.com ; jim@audiosystemsgroup.com
Subject: Re: [TowerTalk] 10 throu 20 beam traps or no traps
In his book, "Array of Light," N6BT shows optimized designs of
2-element, 3-element, and 4-element MONOBAND Yagis. He put these IDEAL
gain figures in a table with the CLAIMED gains of a dozen or so
competing products. In nearly all cases, the advertised gains were 2-3
dB better than the best monoband beam. In other words, they claimed
impossible gains. After the first edition of "Array of Light" was
published, nearly all of those manufacturers revised their gain claimed
downward by several dB.
We called that "marketing gain". Now you know why we did our
on-the-air antenna comparison test so we could have REAL info to make
antenna buying
decisions.
Cheers,
Steve K7LXC
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