1. A quad is a compromise in a since because it is the same a 2 stacked
shortened yagis with a separation of only 1/4 wavelength.
It can be viewed as two 1/4 wavelength yagi driven or parasitic
elements with capacitive loading from the 1/8 length ends turned up or
turned down, which also serve as the feed lines to the upper half of the quad.
2. By what magic does a quad separate RF atmospheric noise from RF signal?
The idea that a quad is quite seems a bit strange to me.
73
Bill wa4lav
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