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.
I have used the two antenna design successfully by mounting two 14 AVQs on the
metal roof of my workshop and switching in a quarter wavelength of coax with a
remote relay box to reverse the direction of the cardioid or to produce a
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