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The W5GI Mystery Antenna is a versatile multi-band wire antenna designed for amateur radio operators. It covers frequencies from 80 meters to 6 meters, making it suitable for a wide range of operating conditions. The antenna features a low feed point impedance, allowing for easy matching with most radios, whether or not an antenna tuner is used. Its construction is straightforward, requiring only two vertical supports approximately 130 feet apart, making it ideal for hams without towers. Users have reported excellent performance, particularly on the 20-meter band, where it outperforms similar designs like the G5RV. This antenna is unique in its design, incorporating three half waves in-phase on 20 meters, resulting in a six-lobe radiation pattern. Despite its effective performance, the antenna is challenging to model, which adds to its mystique. The W5GI Mystery Antenna has gained popularity among amateur radio enthusiasts worldwide, with many users praising its ease of construction and effectiveness. Whether you're a beginner or an experienced operator, this antenna offers a fun and rewarding project that can enhance your HF capabilities.

An effective 10-20m DX antenna for deed restricted lots. The article by K7ZB introduces a simple 10-20m DX antenna suitable for deed-restricted lots. The antenna, a 15' vertical design, facilitated contacts with over 200 countries worldwide. Its design employs a telescopic aluminum tube and radial wires for multi-band operation, requiring an external antenna tuner for optimal performance. The mounting scheme and construction details ensure effectiveness and ease of use.

Base station and repeater antennas, mobile antennas, ,multi-band HF antennas , handheld transceivers, receiving and scanner antennas, power meters, swr meters, power supplies, coaxial switches

Excellent guide to build your own G5RV antenna by Lombry

Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible

How to make the Super antenna. To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band

Here's an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. He documented the design and construction plans for a portable antenna that can be built with relatively ordinary components

To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands

Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS, here's an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. He's documented the design and construction plans for a portable antenna

The multi band HF loop antenna, a good performer on 80 and 40-10 meters. This excellent article covers all aspects of designing a resonant loop antenna, examining gain and radiation patterns, and describing practical notes on how to build this antenna.

The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters

Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.

Article by DK5WL describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication.

This PDF File desscribes how to homemade a multi-band end-fed trapped wire antenna resonating on the low bands of 160 80 and 40 meters. Contains trap design instructions and some construction tips.

A simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, made from 16 feet of RG58 coax cable. The performance is impressive for its size but not meant to replace a Yagi. The antenna features a tuning head, matching unit, tuning capacitors, band change switch, and matching transformer. The feedpoint is at the bottom of the loop. The document provides detailed instructions on assembly and operation.

This antenna project came out very nice. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands. The antenna can be mounted on the ground or on a mast. Mounted on the ground the antenna has a low take off angle for working DX. If mounted on a mast the antenna will acheive both a low angle as well as another radiation lobe that has a much higher take off angle.

46ft multi-band antenna for small gardens. Works well on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV

Austin Antenna employs leading-edge antenna technology in the production of the highest performance antennas currently available. Marine Antenna, Multi-band Mobile, Point-to-Point, Base Station, Wide-band Land Based, LPDA, Linear Omni, Triplexer, Scanner Antennas

G8OFZ multi-band antenna for 80-10m, this antenna appears to be a derivative of the Doublet and the Classic G5RV

The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.

Why Multi-band Dipoles Need HEAVY Open Wire Line by Tom, K1JJ

A Versatile Innovative Portable Multi-band Tunable Antenna can work HF VHF and UHF ideal as portable or balcony antenna

The alternative multi-band solution, covers more bands than a G5RV, light weight, won't damage your trees.

A Compact size 80-10 m field day antenna offering a Low angle of radiation and very easy to build and set up

The document provides information on the Maria Maluca Antenna by dl8ncr, a small beam antenna fed with VHF ribbon line consisting of a dipole and a director adjusted for the desired band. It offers details on the construction and usage of this HF multi-band directional antenna.

A 40 ft vertical dipole antenna that can cover HF Bands from 80 to 10 meters winding a dipole in a 12m HD telescoping fiberglass pole

How to build a multi-band dipole antenna with a single coax feed. Instructions for a 160M antenna that will fit in the space that a 75M dipole will with almost as good of results as a full size 160M dipole.

A 46ft multi-band antenna for small gardens that works on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV by G7FEK

A multiband antenna that can work from 80 to 10 meters in this illustrated docuemnt by G8ODE

Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC bands, need a lot that is at least 100 feet across.

A multi-band inverted-V dipole for portable operation by GM3VLB

A three-frequency multi-band dipole that can be extended easily to additional bands. This article includes a multiband fan-dipole antenna for 80-40-20-10 meter band.

Compact HF antennas for home and mobile use, compact HF maritime antennas, manufactured by multi-band antennas

A compact multiband wire antenna suitable for portable operations.

Build your own multi-band mobile ham antenna with a Hamstick

W3DZZ trapped multi-band antenna, exposed in this practical wireless article

Choosing a vertical antenna. Buying guide to amateur radio HF vertical antennas by Bencher inc

An Off-center-feed antenna that covers 80, 40, 20, 17, 15, 12, 10, and 6 meters

Homebrew G5RV a simple multiband antenna. This article shows detailed pictures of a G5RV home made antenna, including antenna size and dimensions by 9M2ZAK

This is a design for a stealthy HF multi-band vertical wire antenna using a tree as a supportby G7AQK

A New Twist on Portable Multiband HF Dipoles, a Multi-band Spiral Dipole Off-Center-Feed match (OCF) antenna solution.

This article explores the performance of an unloaded elevated vertical, base matching and feed line as a multi-band HF antenna system.

This article explores the performance of an unloaded vertical as a multi-band HF antenna.

Single Coax Feed to Multi-Band Copper Cactus Antenna.

Optimization tests of the W3EDP multi-band HF wire antenna a popular aerial among QRP enthusiasts because it is light weight and cheap.

The G7FEK Multi-Band Nested Marconi Antenna, a small, efficient all-band antenna.

A multi-band portable vertical antenna can be built with relatively ordinary components obtained from the local hardware store, including replaceable loading coils

The SCOTIA Bandhopper a mobile multi-band vertical antenna

The grounded half loop describe in this article is basically a half wave length wire on 80 Meters. The 80M grounded half loop antenna, inspired by a 1984 QST article by SM0AQW, is a compact solution for limited spaces. Comprising a 127-foot wire fed against ground and supported by radials, it balances performance and practicality. Despite compromises in length and proximity to structures, the antenna delivers strong signal reports and effective multi-band tuning using an SGC 237 antenna coupler. Ideal for CW operation, it offers low SWR on 80-10M, though noise levels and safety considerations warrant attention. This versatile design excels in constrained environments.

An Unorthodox Antenna, originally by W3AWH is considered a multi-band antenna suitable for fixed location use and as an easily deployable portable antenna for events such as Field Days.