5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout

Type “J-Pole” into any search engine and you will see dozens if not hundreds of plans to build your very own J-Pole antenna. Many are variations on the tried and true 1/2 wave design with the 1/4 wave stub at the bottom. Be it a plumber’s delight with copper pipe or ladder line heaven using a trimmed up 450 ohm feed line, many folks have successfully created their own J-Pole antenna with a surprising variety of materials.

However, there appears to be some kind of mystical attraction to the 5/8 wave radiator. Several of the J-Pole designs attempt to make the radiator 5/8 wave in length and adjust the phasing stub to make for a good match.

Let’s compare the two approaches using the models available from the late Larry Cebik’s NEC collection. Here are the contenders each using 3/8 inch diameter copper pipe…

Read more5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout

Collinear 5/8 wave J-Pole vs. Collinear 1/2 wave J-Pole EZNEC Shootout

While planning for a ham radio hike into the mountains to support the Appalachian Trail Golden Packet exercise, I asked my club members for ideas about a good portable 2 meter antenna.

One response included a link to this web page showcasing a collinear J-Pole antenna using two 5/8ths wave antenna elements.

Read moreCollinear 5/8 wave J-Pole vs. Collinear 1/2 wave J-Pole EZNEC Shootout

1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout

A friend of mine is preparing for the upcoming Virginia QSO Party in March 2009. Part of the preparations include a focus on some good VHF antennas to support the heavy use of VHF mobile operations in this party. Vertical polarization is key to success. He spoke of a 5/4 Wave Antenna.

Unfortunately, one web site promoting a 5/4 wave antenna solution failed to realize you can’t make an antenna longer without eventually hitting a limit.

Read more1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout

Jpole vs. Coaxial Dipole EZNEC Shootout

This J-Pole, Monopole, Coaxial Dipole VHF EZNEC shootout addresses a comment made that no models exist for j-pole and coaxial dipole antenna simulation.

BigIR vs. 43 Foot Vertical Antenna @ 40 meters EZNEC Shootout

Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 40 meter band.

Read moreBigIR vs. 43 Foot Vertical Antenna @ 40 meters EZNEC Shootout

BigIR vs. 43 Foot Vertical Antenna @ 20 meters EZNEC Shootout

Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 20 meter band.

Read moreBigIR vs. 43 Foot Vertical Antenna @ 20 meters EZNEC Shootout

BigIR vs. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout

Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 15 meter band.

Read moreBigIR vs. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout

BigIR vs. 43 Foot Vertical Antenna @ 10 meters EZNEC Shootout

In a previous post we promised to analyze the merits of the 43 foot tall tuner-required antenna vs. the adjustable BigIR vertical from SteppIR. We did and here are the results.

Read moreBigIR vs. 43 Foot Vertical Antenna @ 10 meters EZNEC Shootout

BigIR vs. 43 Foot Vertical Antenna EZNEC Shootout

Considering a vertical? Among all the dipoles, beams and other types of antennas, the lowly vertical has regained some popularity thanks, in part, to the BigIR SteppIR and, more recently, the 43 foot vertical offered by DX Engineering and Zero Five antennas.

Read moreBigIR vs. 43 Foot Vertical Antenna EZNEC Shootout

1/4 Wave Monopole vs. 1/2 Wave J-Pole EZNEC Shootout

J-pole antennas are an interesting solution to the goal of more gain with a simple antenna. I won’t go into the specifics of what a J-pole is as there are plenty of sites on the Internet with good plans to help you build your own.

However, there seems to be much hype about j-poles that make some folks think they have some kind of magical antenna properties. Indeed many folks report staggering improvements over their previous antennas. Is all the hype warranted?

Read more1/4 Wave Monopole vs. 1/2 Wave J-Pole EZNEC Shootout