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J-Pole antenna for 146 MHz 220 MHz and 440 MHz


The antenna, is designed entirely in bronze pipes and the longest rod point a + c, has a total length of 2 mts 44 cms
post 21 Feb 2024
J-Pole antenna for 146 MHz 220 MHz and 440 MHz

Antenna jpole Links

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Portable Aerial based on the 'Slim Jim', 3/4 wave End Fed Vertical
Here's a cute aerial for portable operation. It's a modified Slim Jim end fed aerial made out of 300-ohm ribbon feeder cable

Realizzazione di una antenna J-POLE VHF UHF
In both VHF and UHF the SWR is about 1: 1 on the portion of band that interests me

Slim JIM 145mhz
The Slim Jim designed by the late Fred Judd G2BCX can be a great portable

A 6m J-Pole Antenna using Ribbon Cable
These antennas were quite popular at one time


Take off angle of horizontal antenna

Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane

A remote antenna switch

A remote antenna switch An abiding dislike for bundles of cables running on the exterior of my house, so a remote antenna switch seemed like a good idea

5 element yagi antenna for 28.5 Mhz

5 element yagi antenna for 28.5 Mhz Gamma match will be made with a 1/2 "aluminum tube and a 75 cm coaxial piece of RG8 without sock and sheath inside the tube