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Switching Out One Antenna
Dropping one antenna is useful to change patterns and fill null areas, even if it results in a loss of
overall gain. It is also useful for reducing or elimination precipitation static during inclement
weather by disconnecting the upper antenna. Pattern would depend on the type of antenna and
antenna height.
Out-of-Phase
Out-of-phase stacking is more effective at raising wave angle than dropping one antenna. Here is
the typical pattern of a maximum gain stack of Hy-Gain 205CA 20 meter antennas fed out-of-phase:
Figure 4 - Maximum gain at 28 degree elevation
