Here's my experience.

On transmit:

160 meters: 90 foot vertical is 20 dB better than 60 ft high inv vee
80 meters: 60 foot vertical is 10 dB better than 60 ft high inv vee
40 meters: 30 foot vertical is equal to 90 ft high inv vee
20 meters: 30 foot vertical is beaten by 90 ft high inv vee about 25% of
the time
15 meters and up: Any dipole trounces any vertical.

On receive:

160 and 80 meters: A low dipole trounces any vertical
40 meters and up: best receive antenna is best transmit antenna

Rick N6RK

There surely must be instances where vertical polarization proves
better
than horizontal, but these are exceptions, not the rule.

Vertically polarized noise is about 10 dB higher than horizontally
polarized noise at my QTH rendering a vertical antenna virtually
useless for receiving compared to a horizontal antenna.

Sorry, forgot to say this was on 40m.
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73, Cecil http://www.qsl.net/w5dxp
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