[TowerTalk] T-match?

[Ed Sleight]

"i4jmy@iol.it" wrote:
> It doesn't have to scare anyone because such
> director is one of the best and smarter ideas to easily achieve in
> practice what's modeled in terms of gain and BW.

When I used the word "scary", I was referring to the more normal
spacings you usually see. 

> About the 40 dB F/B you report, that's unfortunately a peak (just
> straight back) on a stated frequency and elevation angle.

Well, of course it is. Would you have rather I stated the peak
elsewhere? If so, the greatest F/B is 55.79 dbi at 168 degrees. That I
stated was at 171 degrees, the exact opposite of the 9 degree take off.
The antenna is resonant on 21.165 and the WORST SWR using a direct balun
feed is 1.17 @21.4. At 21.0, it's 1.11:1, and at resonance 1.009:1
(50.03 ohms+j.4233 )

When you have W5,W6, and W0 sitting behind you, you need all the F/B you
can get.

73
Ed

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