[TowerTalk] Stacking Supplement

[Ian White, G3SEK]

Dick Flanagan wrote:
>
>Pat Mulreany, WX7M, here in western Nevada, took a different approach.  He
>assembled a 16-element 20-meter yagi on a 280-foot boom from which he
>calculates 19 dB forward gain (I don't know whether it is dBi or dBd).
>

The best gain that generations of 2-meter yagi designers have been able
to achieve with that electrical boom length (4.1 wavelengths) is about
15.5dBd (17.65dBi) in free space. 

Throw in a few more dB for assumed ground-reflection gain and, yes, you
may be somewhere in the "19dB" region.


73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)
                           http://www.ifwtech.demon.co.uk/g3sek

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