Search results

This project produces a sturdy tripod for small vertical antenna support using readily available electrical metal tubing (EMT) or conduit

Use this online calculator to determine the length of a quarter-wave antenna from the frequency. Both metric and English units of measurement are supported.

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.

A conversion of a 80m dipole into a 160m vertical antenna

An indeal stealth antenna made by multiple quarter wave verticals, supported by a tree.

Butternut article on radials usage on vertical and ground plane antennas

Buy ham amateur radio, antenna, j pole items from ON ANTENNAS J POLE eBay Store. We sell ham amateur radio, stealth wire, 2 meter, vertical items on eBay.

Ground Plane antennas and common mode

Antenna for limited space, made from 24AWG wire helically wrapped around the top element of a 3-element cane pole, is basically a fully-loaded vertical and performance are limited and should represent the last resort for extreme cases.

Vertical phased antenna systems plans by G3WZT

Limiting static surges on dipoles, verticals or end fed antennas

An effective multiband HF Vertical antenna, used as remote station antenna. Pictures and review of this vertical HF antenna by VK5SW

Modeling small 160 meter antennas, with a focus on the vertical H antenna

Article by N6LF on a top band vertical antenna array system

Design of a 40 meter Vertical antenna

The vertical Double-Zepp 2x7 m is a very simple, effective 8-Band-antenna. The end of the Dipol must be 5-10 m above the ground

Double T Bar Vertical antenna are vertical antenna with cross bars on the top and bottom. These crossbars provide capacitance loading thus reducing the size of the antenna

High impedance amplifiers for shortened vertical antennas, Array matched and Optimized 15dB Preamplifier

W0IPL article on NVIS Antenna

A magnetic loop antenna for the VHF band, featuring a high gain that can be compared to a quarter wave vertical antenna

Assembling the Butternut HF9v HF vertical antenna

Experimental 136kHz Vertical Antenna at G3YMC based on an old Butternut HF2V 40/80m vertical antenna

Pictures and description of a SteppIr vertical antenna setup in a small backyard using DX Engineering radial plates.

An comprehensive article on 40 meters antenna comparing vertical height to the resulting gain

An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page

This article is about a simple vertical end-fed-half-wave wire antenna for 10 meters that can be used in case of restricted space.

A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

The configuration of this antenna is a triangle with apex in the top of a very tall tree. The antenna is fed at a bottom corner using 450 ohm ladder line.

Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole

The advantage of 5/8 wave antenna is that it has the lowest angle of radiation and has about 1dB more gain when compared to 1/4 and 1/2 verticals. So the 5/8 should be the favourite choice for DX.

A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.

Theory and origins of W4RNL Asymmetrical Hatted Vertical Dipole AHVD for portable operations.

Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.

Assembling installing and tuning the Butternut HF9V multiband vertical antenna

Ham Radio Vertical HF multiband antennas manufacturers based in Spain

Maltronix, HF antennas, dipoles and verticals, switching power supply, power distribution, antenna switch

Amateur radio antennas manufacturer, produce multiband and monoband high performance yagi antennas and vertical antennas based in Poland

This article describes the details of the design, which can be easily scaled for just about any HF band. The antenna described in this article is for the 20 meters band.

NVIS antennas, also known as Near Incident Vertical Skywave antennas have a high angle of radiation. Something on the order of 60 degrees, to straight up to 90 degrees. A portable, easy to setup and cheap nvis antenna project.

A review of some portable antennas for SOTA operations, including linked dipoles, end-fed, verticals

TransWorld Antennas TW2010 Traveler HF Portable Vertical Antenna setup instructions

Ham radio HF antennas manufacturer, produce HF dynamic beam antennas, and vertical pole antenna. Offer kits and parts to build you own dynamic antennas, by IZ0AEG

Performance of an unloaded ground mounted vertical as a multi-band HF antenna.

The Vertical Buddi Beam on 20m using no Coils. n this article I am going to describe a totally new way to construct and use a very old design the two element Yagi antenna. Unlike the traditional Yagi this design does not require a Tower or a boom, it is 100 percent portable and most important high- performance and easy to assemble using standard Buddipole components.

An HF vertical antenna by N3OX with a flexible capacitance hat

Calculate vertical array pahse antenna accorting to the Christman technique

A presentation of the Yagi Antennas, and other interesting tid-bits by Brian Mileshosky. The document provides an in-depth exploration of the Yagi-Uda antenna, detailing its historical development, design principles, and performance characteristics. Originally described in the 1920s, the Yagi antenna features a driven element and parasitic elements, including reflectors and directors, which collectively determine its behavior. The document highlights how element lengths, diameters, and spacing influence gain, impedance, and directivity. It also discusses the antenna's reciprocal nature and presents data on typical gain values for various element configurations. Additionally, the text covers practical considerations, such as the construction of a "Tape Measure Yagi" for amateur use, and touches on related antenna types like dipoles and their application in Near Vertical Incident Skywave (NVIS) communication.

Homebrew 30 meter full quarter wave vertical antenna.

A multiband vertical antenna for HF bands with elevated ground radials slant down at 45 degrees and acting also as guy wires.

How manage and quantify ground loss in vertically-polarized antennas by VE3VN