The DXZone.com Amateur Radio Internet Guide
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J-Pole and Expanded Super J-Pole
Posted:
https://www.dxzone.com/dx34394/j-pol...er-j-pole.html
Antennas/J-Pole
The standard J-Pole antenna is a end fed 1/2 wavelength antenna, in this
article is explained also how to build an expanded Super J Pole that
provides about 4.5 dbd gain. These antennas can be built from EMT electric
conduit pipe