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Query: j-pole
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Pictures of a 2 meter, 220, 440 copper J-Pole antennas -
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This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands -
A 144/440 dual band open stub J-Pole Antenna project by NT1K -
A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground. -
Original article published on February 1992 on 73 Amateur Radio Today about the 2m and 70 cm copper cactus J-pole antenna -
Based on original G2BCX design this J-Pole antenna for the six meter band is made with a homemade ribbon cable. The antenna shown in this article includes a coaxial cable choke feed to remove RF currents from flowing on the outer of the cable. -
A J-pole antenna plan made using a half inch copper tubing -
Pipe your signals to 146 and 445 MHz with one antenna! -
A Lindenblad Antenna for 145 MHz and 435 MHz with an integrated 50 MHz J-pole -
Understanding Gain differences, j-pole and end-feed vertical antennas. -
This article document a 2 element half wave collinear J-Pole antenna by KC9EOT and KB8OJH -
An easy portable VHF antenna to build for ARES - RACES work is the 300 Ohm Twin Lead JPole antenna -
Located in southern Ontario Canada, supplier for HF VHF antenna kits, aluminium tubing, portable j-pole antennas, lightning suppressors, connectors and adapters -
A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles. -
A Unique VHF Antenna with gain over a J-Pole Jose I. Calderon, DU1ANV -
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An online J-Pole antenna calculator that need just to input the frequency and calculates in inch size of each element -
A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials. -
This is a simple portable 2-meter J-Pole antenna. You start with a piece of 450-Ohm Ladder Line -
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An interesting article on how to make copper cactus J-Pole antennas -
Ground Plane - 1/4 wave vertical, J-Pole, 3 Element Yagi Beam and simple antenna supports -
The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators. -
After you have build this antenna, you may not need anything else. This article shows how to build a VHF j-pole antenna and how to protect it by inserting it into a PVC tube, the correct way. -
This is the construction of a copper cactus style j-pole antenna. -
A comparative article on performance differences between Slim Jim antennas versus J-Pole antennas -
Build the Slim JIM Antenna, a unique VHF Antenna with gain over a J-Pole Jose I. Calderon, DU1ANV -
The copper J-Pole antenna soldered in a couple of hours with an interesting method to setup the feeding point -
A J-pole antenna plan for 50 MHz based on the DK7ZB design -
The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub. -
A Six-element Yagi Beam for 6 Meter by W1JR proiddes a power gain of 10.2 dB over a dipole it is built on a 24 foot long boom -
Online calculator for J-Pole antennas. The J-pole antenna consists of a short and a long vertical pole with a feed point near the bottom. The antenna looks like the letter J, hence the name J-pole antenna. -
If you like building good antennas, this one is for you. The J-pole is a slim, omnidirectional, half-wave antenna fed at the end through a quarter-wave shorted transmission line. Its predecessor is the famous Zepp antenna developed for the Zeppelin airship. -
6 Meter J-Pole from 450 Ohm Ladder Line a quickie project -
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 -
How to setup and configure the buddipole antenna in the J-Pole mode for the six meter band -
The page provides information on a simple 50MHz J-Pole Antenna project based on the DK7ZB design. It explains the principle of the Wireman-J-Pole, the feeding process, practical mounting, and simulation results using MMANA GAL. The content aims to guide amateur radio operators in building their own J-Pole antennas for the 6-meter band. -
A homemade j-pole antenna for six meters band, designed to work on local repeaters, and working on the 52-53 MHz. Includes a list of needed materials and detailed description on assembling the copper tubes used to build this antenna. -
Complete plan for making a 2-meter J-Pole antenna. This drawing in PDF File includes a detailed list of the parts needed to assemble the Jpole antenna for 144 MHz. -
This article provides details on building a 6 Meter J-Pole antenna using PVC pipe for an enclosure. This antenna uses flat 450 ohm Window Line for the tuning stub. -
This J-Pole is mounted on a fishing rod. The radiator L1 is an isolated copper-wire with a length of 281,5 cm while the quarter-wave matching sector L2 is made with 450-Ohm-Wireman-cable -
This is a simple half wave antenna for 70 cm band, made using the jpole design. -
The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. Get 0.8 dB more gain out of the trusty Super-J by replacing the traditional phasing stub with a long coil. -
Essentially, a J-pole is a 1/2 wave resonant antenna connected to a quarter wave matching stub. The feedline is connected at a point on the matching stub that is at the feedline's characteristic impedance. The result is 3/4 of a wavelength on one side and 1/4 wavelength on the other side. -
A j-pole antenna plan with drawings and dimensions that can help you on building your own j-pole antenna for the six meters band -
A very essential j-pole antenna for 144 MHz. To adjust the SWR you will have to play with the 40mm distance between the coax feed and the braid inner conductor connection