Multiband Antennas: Versatile Designs for Every Band

Build Efficient Multiband Solutions

Multiband antennas provide a flexible solution for amateur radio operators looking to operate across multiple frequency bands. These designs allow for efficient communication on various HF bands without the need for multiple dedicated antennas. Projects like the Classic Multiband Dipole and the G7FEK Nested Marconi offer practical construction techniques that can be implemented with readily available materials. Whether you are a seasoned DXer or a newcomer, building a multiband antenna can enhance your station's capabilities and improve your overall performance in contests and casual operation alike.

To construct a multiband antenna, you will typically need materials such as insulated copper wire, ladder line, and a balun for impedance matching. Common designs include the Cobra Antenna, which uses 450 ohm ladder line, and the Inverted L Portable Antenna, which can operate on multiple bands. Essential tools for assembly may include a tuner, wire ties, and a mast for support. Each project varies in complexity, making it essential to select one that aligns with your skill level and operational needs.

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    The W5GI Mystery Antenna is a multi-band wire antenna that covers 80 to 6 meters with low feed point impedance. It is easy and inexpensive to build, similar to a G5RV but performs better on 20 meters. The antenna is difficult to model but has received positive feedback from users worldwide. It is ideal for hams without towers, requiring only two vertical supports about 130 feet apart. The antenna consists of three half waves in-phase on 20 meters with a half-wave 20 meter line transformer, offering a six-lobe pattern, gain broadside to the antenna, and low feed point impedance for easy matching.
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    A 10-20 meters coverage delta loop antenna. After relocating, DL2HCB designed a multiband loop antenna to cover 10-20m with an open-wire feed for impedance matching and compact installation. Inspired by the mini-X-Q design, a modified 10m delta-loop was built, enhanced with a 1/4 wave shorted stub for 28 MHz using 450-ohm ladder line. The antenna delivers east-west broadside radiation and performs as a closed loop on other bands. Operational tests yielded strong European signals and successful DX contacts, including a 20m QRP QSO with FY/DJ0PJ.
  • G5RV Antenna
    The page provides detailed information on the G5RV antenna, its feeder arrangement, and efficient operation on HF bands from 3.5 to 28 MHz. It includes dimensions for installation in limited spaces, variations for different bands, and impedance matching details.
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    Portable, and shortened with loading coils rotatable dipoles for 6 meters, 20 meters and multibands.
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    The antenna was named for W4JRW who invented it and holds a patent on the basic principle and uses quarter wave stubs, 80, 40, 20, 15 and 10 meter bands
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    This is a vertical multiband antenna made up of several aerial elements lambda/4 length, feeded with just a coaxial cable in French.
  • Multi-Band Super Mini Loop Antenna
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  • Homebrew a W3DZZ antenna
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    A new perspective on the analysis and design of this popular antenna element. By Karl-Otto Muller, DG1MFT
  • 1.8 to 21 Mhz Magnetic Loop antenna
    Magnetic loops are a compromise antenna and performance will be down on a full size-wire antenna particurlarly on lower HF Bands. This article compare this magnetic loop with a full-sized wire antenna on 80 meters by VK3YE
  • An effective 3 band Wire DX aerial
    A 3 band dipole for 10 15 and 20 meters band, easy to build, and that can be easily setup in any occasion, inclunding field days or portable operations
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    This is a combination center and top loaded multiband antenna by Mark D. Lowell, N1LO PDF File
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    HF multiband mini delta compact and easy assembling antenna that cover from 20 to 10 meters by GM3VLB
  • A Multi-band HF loop 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.
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  • W3DZZ multiband dipole
    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
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