[TowerTalk] putting a reflector below a 75 meter inverted

[Bill Turner]

ORIGINAL MESSAGE:

On Sun, 9 Sep 2007 09:10:46 -0500, "Robert Chudek" <k0rc at pclink.com>
wrote:

>
>You guys discussion prompted me to look into the "counterpoise" for horizontal wire antennas. I found a brief article here, including some graphs.
>
>http://www.arising.com.au/people/Holland/Ralph/counter.htm
>
>73 de Bob - KØRC in MN

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One paragraph in that article states:

"The horizontal dipole system has a minimum gain of 0 dBi at 51
degrees elevation, while the counterpoise system has a minimum gain of
0 dBi at about 42 degrees of elevation. Alternatively, antenna gain
comparisons at all elevation angles show that the counterpoise gain is
greater than the dipole system by 2.53 ( 0.05 dB. This demonstrates
that the counterpoise is a more effective ground system; the
counterpoise reflects more energy into the half-space so less is
wasted in the intrinsic ground resistance and more is radiated."


I don't understand the "by 2.53 ( 0.05 dB." part. Is that a typo?
Where is the missing close parentheses?

Bill W6WRT