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End-Fed Antenna

Mar 14th 2016, 01:45

WB5YBZ

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Does anyone know the Average gain dBi of an End-Fed Antenna that is about 124 feet long?
Mar 14th 2016, 18:46

W1VT

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0

Average gain is a function of tuner/feedline losses and height above ground. It is often easier to understand antenna theory if you convert the length and height of an antenna into wavelengths, instead of feet or meters.

You may be able to get a rough idea using the demo version of EZNEC.

Zack Lau W1VT
ARRL Senior Lab Engineer

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