Quagi Antenna Designs for Effective Communication
Build High-Gain Quagi Antennas
Quagi antennas combine the features of Yagi and cubical quad antennas, providing high gain and directivity. They are particularly effective for VHF and UHF communications. These antennas are suitable for various applications, including satellite operations and EME (Earth-Moon-Earth) communication. Building a Quagi antenna involves precise calculations of element lengths and spacing to optimize performance. Resources are available for constructing different models, such as the 2m and 70cm versions, which cater to specific frequency bands and operational needs.
Key components for building a Quagi antenna include aluminum rods for the elements, a wooden boom for support, and a 50 Ohm feedline. Various designs, such as the 8-element Quagi for 70cm and portable models for field use, are documented. Software tools like Quagi Designer assist in calculating dimensions for optimal performance.
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This antenna was designed by N6JSX Kuby for Transmitter hiding. Fitting the requirements of directionality, high gain, and portability. This antenna was derived from the ARRL Handbook information on Quagi's and Yagi's; in the absence of two meter Quagi information, UHF Quagi dimensions were scaled into 146 MHz use. -
Dimensions and plan to build a W5UN EME quagi antenna -
A design of a 2 m quagi antenna by TA2IB -
Total Boom Lenght is 3 m. -
How to build a 432 Mhz Quagi, using a wood-made boom, and gives a 13 DBI Gain -
A Quagi antenna project with pictures and dimensions for a UHF Quagi antenna -
A six meters band Quagi antenna project -
Quagi 8el 70cm improved 13.77dBi by IK1HGE -
A 10 elements quagi antenna for the 900 MHz band -
An AO-10 antenna by K5OE, this design is optimized for 436.8 mHz with a 50 Ohm feed -
Designing quagi and yagi antennas on 2 Meters, some preliminary notes by Cebik, W4RNL -
Quagi antenna design, this little windows application let you calculate dimensions of elements and spacing of a quagi antenna. Freeware by VE3SQB -
Antenna project for a home made quagi antenna for UHF Bands, 432 MHz. This projects is done using some aluminium bar rods and includes design and pictures of the project -
It has been 40 years since the VHF-UHF Quagi antenna--a combination of the desirable features of a Yagi and a cubical quad--was developed and the design was first published in the newsletter of the Southern California VHF Club, a forerunner of today's Western States Weak Signal Society.