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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.

Review of the W5GI Multiband Mystery Antenna by July 2003 Issue of CQ Amateur Radio

Take the mystery and mystique out of standing wave ratio. QST Article by K5DVW

In response to a question about Numbers Stations, their origin and purpose, the following information should be of interest.

Lights on why 160 meters is so unpredictable and what is being done to reveal its secrets

There are pages with info on the code, pictures of morse keys, a couple of downloadable tutor programs, mystery keys etc.

Baluns are still a mystery to some radio amateurs and the only way to understand them is to learn what they are and how to use them.

Why all the mystery surrounding baluns ? To use or not to use baluns

Effect of radials on the efficiency of antennas.