[TowerTalk] 10 throu 20 beam traps or no traps

[Steve Baughn]

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 at contesting.com ; jim at 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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