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75M inverted Vee

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October 14th 14, 07:44 PM posted to rec.radio.amateur.antenna

John S

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75M inverted Vee

On 10/13/2014 5:40 PM, wrote:
A quick analysis of a 75M inverted vee with an included angle of about 70
degree shows:

Apex at .5 wavelengths:

Bidirectional horizontal pattern with a front to side ratio of 8.4 db,
vertical pattern a single lobe at 30 degrees and 6.7 dBi gain.

Apex at 60 feet:

Omnidirectional pattern with the vertical pattern showing a gain of 5 dBi
straight up and a gain of 1.5 dBi at 30 degrees and a gain of -1.3 dBi
at 20 degrees.

For comparison, a 1/4 wave vertical which would be about 63 feet tall,
shows a gain of .6 dBi at 20 degrees.

Good info. Thanks, Jim.

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