Quad Antenna Projects and Construction Resources
Find designs and building instructions for various quad antennas, including cubical quads, multiband quads, and portable options.
Quad antennas are a popular choice for hams seeking good gain and directivity across HF and VHF bands. Known for their robust performance in various conditions, quads are often preferred for DXing and contesting due to their low angle of radiation and excellent front-to-back ratios. Many operators enjoy building quads as homebrew projects, experimenting with different designs to optimize performance for specific frequency ranges or operating styles.
This category features numerous quad antenna projects, from compact designs like the Shrunken Quad for limited space to multi-element arrays for bands like 20 meters and 40 meters. Hams can find detailed construction notes for multiband cubical quads, including those by EI7BA, and specialized designs such as the DK7ZB-Quadlong. There are also portable quad antennas for VHF operation on 6 meters and 2 meters, suitable for field use or SOTA activations, offering good gain for working distant stations.
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Unique Shrunken Quad antenna design for 10m, 15m, and 20m bands. -
Dimension and formula for a 4 element QUAD antenna for the 10 meters band -
A project by N6BG for a four element cubical quad antenna for the 2 meters band -
A reversable quad antenna for 40 meters band by N4JTE -
Pictures of a 2 element cubex Quad antenna at a height of 10 meter -
2 Element Cubical Quad Antenna for 28 MHz by DL7JV in german -
Build a 2 element quad antenna for 10, 12, and 15 meters with detailed instructions. -
Construction details and tests about a 2 elements cubical quad antenna for HF Bands (20,17,15,12 and 10m band). -
A five element quad antenna for 144 MHz DIY Project. This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly. -
W7SIR cubical quad antenna for 146 mhz -
A 2-metre Quad antenna project by K6WXA in PDF file -
10-12-15-17-20m A description was in the German Ham-Magazine "Funkamateur" in Issue 11/2003 -
A four element 2 meter quad antenna project -
This Multiband Cubical Quad antenna a boomless Quad design with glass-fibre arms and a single coax wire connected to a remote antenna switch. This aerial work on 8 bands and has a 60-degree beam width. Despite achieving critical technical requirements, the antenna's three-dimensional structure presents obstacles, such as installation issues on fixed towers and risk of frost damage. The spider framework is built of stainless steel, with a compact 18-inch boom and strong angle iron arms. Tait use a variety of methods to fasten element wires and suggests placing them on the outside of the spreaders for improved insulation. The use of nylon twine or parachute cord between key attachment points allows for adjustable separation between pieces. -
Starting from an original project for a 2 element quad antenna for six meter band, ve7ca presents the dimensions for a 3 element version. -
A suitable high gain 70cms antenna for SOTA operation by Richard Price GW0VMW -
2el 40Ft front to back spacing 80 meters Quad antenna -
This antenna is based on a design for a portable 2 element 6m Quad by VE7CA, which is featured in the 19th Edition of the ARRL Antenna Handbook -
One of the best antenna values on the market is the LightningBolt Quad. At about half the cost of a tri-band yagi, you get five band coverage with a single coax feedline and excellent performance from a light, low wind load antenna. -
A vertically polarized broadside and collinear array by KE4UYP -
A guide to building a boomless quad antenna for amateur radio. -
Explore the design and construction of cubic quad antennas for various bands. -
Let's explore the cubical quad antenna, or quad, and see what it really is and how it really works by w8ji -
The function of the calculator is to give all of the needed sizing to construct a good 5 element quad antenna for amateur radio use. -
Easy Quad calculator, enter center frequency to get a quad antenna size -
Design formulas for Cubical Quad antennas, including element lengths and gamma match values. -
2 element Quand antenna for 10 - 12 - 15 -17 - 20 meters band -
Cheap but effective multiband quad antenna covering the entire horizon on 10-12-15-17-20m bands. -
Multi Band Quad,Cushcraft R5, R7, R7000, repair and maintenance, Remote Antenna Switching, Hexagonal Beam, Automatic Band Decoder, Low Band Verticals, Crank-up Tiltover Tower etc -
A Quad Fractal Antenna for 20 meters band by F3DD -
EI7BA Multiband Cubical Quads projects, includes two elements quad antennas for 10 12 15 17 20 meters band. Performance considerations, detailed pictures and construction notes. -
Build a 3-element reversible quad antenna for 40 meters. -
144 Mhz portable 4 elements quand antenna by N1LO -
A portable 4 elements quad antenna for 144 MHz, 9 to 10 DBd forward gain, 30 DB front-to-back ratio, and 33 DB front-to-side ratio -
A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth. -
A two element multiband quad antenna -
Some thoughts on a "hardware-store special" 2-meter quad, and a modified quad for 2 or 10 meters by K3MT -
Building guide for a two element quad antenna planned for 28 and 21 Megahertz -
A VHF Quad antenna for teh two meters band in italian -
Explore the innovative Pfeiffer Maltese Quad Antenna System for multiple bands. -
Quad antenna homebrewing, mechanical considerations by IZ7ATH -
Cubical quad antenna calculator in java script let you calculate elements size and spacing in inch and meters. -
A compact Quad Antenna for the HF Bands by GM0ONX -
Quad and loop antennas comparisons, evaluating the impedance and gain of both antennas and considerationso n horizontal loop antennas for low bands by PA0FRI -
Compares quad and Yagi antenna designs, detailing gain, F/B ratio, bandwidth, and physical attributes. Explores construction, wind loading, and optimal deployme -
The DK7ZB-Quadruple-Quadlong for the 2 meter Band -
VHF quad antenna for transmitter hunting. -
Based on HB9CV, F6ITV decribes how build a swiss quand antenna for 28 and 50 Mhz. -
A portable swiss quad antenna project made with components and parts that can be dismounted, in German -
4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity -
New type of a Quad antenna, 6.4dBd gain -
The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength, shown -
VE7CA reprint an interesting article taken from arrl antenna compendium. Two elegant practical and portable 6-meter gain antennas, a two-element quad and a tree-element Yagi antenna for 50 Mhz-6 meter band -
Quad and Yagi portable antennas for 50 mhz by VE7CA -
Animated quad and yagi comparison. You can see antennas' characteristics behavior in a vertical plane with changing of the height. -
A project for a four element cubical quad antenna for 144 MHz in portuguese -
Why quads are considered best antennas by ve3sqb -
A two meter Quad antenna project with detailed instructions on how to adjust the Quad gamma match -
This 2 meter 3 element cubical quad antenna is small, light weight and portable. A backpack antenna that is easy to put together in just minutes and parts store inside the boom making it ready for travel or storage. -
A four elements quad antenna for 144 MHz made with PVC pipes -
A 2,4 GHz 13cm band quadrible qiad antenna with reflector offering a 14dbd gain -
A basic drawing of a 2 meter quad antenna for 144 MHz -
Handmade drawing of a 3 bands single loop, portable quad antenna used by the author during his dx pedition in Kenya as 5H3FM. This antenna is done using 3 telescopic spreaders and the spreader kit for 1 element quad by spiderbeam. -
A 14.12 dBi gain three elements cubical quad antenna for the six meters band. This Quad Antenna design page include a MMA model available to download and dimensions for each element. -
Durable Easy To Build 4 Element 6 Meter Quad Or 6N2 Or 4 Element 6 And 5 Element 2 Permanent Or Portable you decide based on your needs By WA8UEG -
3 Element reversable quad antenna for 40 meters band -
A 5 band two element quad antenna working from 20 to 10 meters using hardware-store parts or modifying an existing commercial triband quad by KC6T -
This guide provides detailed information on designing a 5 Band Quad Antenna for ham radio operators. It covers the necessary materials, dimensions, and construction steps required to build the antenna. The guide aims to help hams optimize their antenna setup for maximum performance on five different bands. Whether you are a beginner or an experienced operator, this resource can assist you in creating an effective antenna system for your station. -
Quads beams consist of 2 1 wavelength (approximately) loops, ordinarily arranged so that one is the driven element and the other is the reflector. In this project author explains how to build a two element Quad Antenna for the 28 MHz. -
Pictures and detailed instructions on installation of the LightningBolt Quad antenna -
A Different way to construct a tried and true antenna out of PVC, especially for the 10 meter and higher frequencies. -
Online antenna calculator for cubical quad antennas by EA1DDO / HK1H -
January 1955 QST article by W5DQV about constructing a Cubical Quad antenna for 14MHz PDF File -
The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost, who was a pioneer of VHF Quad designs and one of the best Southern California Transmitter Hunters. Ray built hundreds two meter quads in single and paired configurations as well as his famous mobile radio direction finding quad. -
This project details the design and construction of a Spider Quad antenna for HF bands (20m, 17m, 15m, 12m, and 10m). The boomless structure optimizes driver and reflector spacing, enhancing performance. Tuning and impedance matching were refined using antenna analyzers and a 1:2 balun. Final tests confirmed excellent SWR and gain, making this an efficient solution for top performance DXing. -
A detailed guide presents a simple 2-element quad antenna for 2m, offering ease of construction, portability, and efficient performance across the 144-148 MHz band. The design allows quick disassembly for storage and features adjustable polarization, making it ideal for various applications, including transmitter hunting and SSB operations. -
Article by G4AON about a 4 and 2 Element Quad Antennas for the 6m band -
A light and sturdy Quad for 10 and 15 meters. Basic Quad antenna design considerations. Building and assembling a dual band HF QUAD antenna, designing and joining cross-arms and boom, assembling spreader and element wire installation notes. QST article. -
A 2 element small footprint 40 meter phased, reversible, downsized quad array antenna. -
An interesting page about Quad antennas. Modelling QUAD antennas, comparing quad antennas to yagi antennas. Information on QUAD Antenna tuning and home brewing with help on calculating dimensions and tuning. -
Rotatable Antenna with Phased Elements based on the orignal design concept of HB9CV antennas, is considered to have an higher gain than standard quad antennas. The Swiss Quad Antenna does not need any spreader or boom. -
This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain