On 3/18/13 3:45 AM, Pete Smith N4ZR wrote:
I've been trying to remember specifics about a phasing system that was
sold commercially for a few years back in the 70s or 80s. It used two
verticals and, depending on settings on the desktop, could vary the
phasing of the verticals over a wide range, producing all sorts of
patterns. Anyone recall, or even have one in the basement?
There was a device like this in one of the Antenna Compendiums. It had a
transformer power splitter and a phase shifter in series with one of the
verticals. You could switch the phase to one of the elements by 180, so
the idea is that you could null on the desired signal, then flip the
switch and the lobe faces towards it.
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