> Another source for phased vertical information is in a
> Telex-HyGain Engineering report entitled "Phased Multi-Band
> Verticals for Additional Gain and Low Angle Radiation." The
> report is undated but contains designs for 2 and 3 element
> phasing systems showing the patterns and switching
> configurations. In the report the 3 antenna system is shown
> with the antennas placed at the corners of an equilateral
> triangle with each side of the triangle being 1/4 wavelength.
> In this configuration the report states that for the three
> antenna configuration a 60 degree pattern can be switched in
> six selectable directions. Note that the cardioid pattern
> shown in the report for the two antenna system is not totally
> correct (it shows a point in the gain direction) and it does
> not show patterns for the three element array.
Also note that the phasing for the cardioid array shown in that
report is incorrect. You can't just add a "delay" line of 1/4 wavelength
to get 90 degree phasing.
Tor
N4OGW
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