The further away from the desired frequency the better the match became. It appeared impossible to find any combination that best matched impedance and front to back ratios. A trade off was always at the expense of the poor front to back ratios. -25Db or more was a basic target in all program trials and analysis. It was noted that closer the loop dimensions (not spacing) became to one another, the better the front to back ratio's became. Unfortunately, the feed impedance always rose sharply, again always on the lower side and outside the band edges.

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• All About Cubical Quad Antennas

A similar effect could be obtained with larger or smaller loop sizes, and changing the boom length. There was considerable latitude in all dimensions as to the forward gain within a few percentage of the desired operating frequency. The optimum result for best front to back ratio for any given loop size was to make the reflector between 3% and 5% larger. Whilst some manufactured and home constructed quads, claim a good match to 50 Ohm feed line, this is not born out using Eznec.

HF Quad antenna manufacturers category is a curation of 15 web resources on, RQUAD Antennas, MaCo Antennas, Giovannini Elettromeccanica. Resources listed under Quad Antenna category belongs to HF main collection, and get reviewed and rated by amateur radio operators. All About Cubical Quad Antennas by William I. Orr, 037, available at Book Depository with free delivery worldwide. All About Cubical Quad Antennas: William I. Orr: 037 We use cookies to give you the best possible experience. Paused You're listening to a sample of the Audible audio edition. Follow the Author William Ittner Orr + Follow Similar authors to follow + + + See more recommendations Something went wrong. Please try your request again later. OK All about Cubical Quad Antennas Paperback – Import, January 1, 1991 by William I.

Welcome to quadantenna.com. If you’re looking to purchase a Cubical Quad antenna, you’ve come to the right place. All of our antennas are hand built with the highest quality materials available and should give you many years of service. We have many years of experience in building antennas and we feel that a quad is one of the best ham antennas available. Recently, I’ve been getting requests for 2 meter quads with 2, 4, and 8 elements and even some interest in 6 meter quads. In the next few pages, I’ll provide pictures and information about our products. Meantime, below you’ll find a brief history of the cubical quad.

A cubical quad antenna is a four sided, square version of a folded dipole. In 1947, cubical quads began gaining popularity with amateur radio operators. According to Bob Heil in his book, Heil Ham Radio Handbook, there were articles in QST and CQ magazine showing how to build a 10 meter quad. These antennas are extremely directional and have considerable gain over other antennas such as the Yagi. Being made of light weight materials such as fiberglass and wire, make building, handling and installing the antennas an easy task. Quads can be designed for use in the VHF, UHF and HF amateur bands.

Over time, cubical quads lost some of their popularity but recently new hams have rediscovered them and they are becoming popular again.

For a complete history and technical information about the quad, one should read the book, All About Cubical Quad Antennas, by William I. Orr, W6SAI and Stuart D. Cowan, W2LX. A quick search on Amazon or Google should tell you where to purchase the book if it’s still in print.

ABOUT ME

My name is Randy and I love quad antennas. In fact, I’ve been building them for over 40 years. To me, you just aren’t going to find a better antenna. Every Ham finds an aspect of radio that interests them. Some it is contesting, QRP, or digital. My favorite thing about Amateur Radio is antennas. I have always experimented and built my own antennas for my 40+ as a ham. I have learned through trial and error what works and how to make my antennas as efficient as possible. I started selling my quads in the 80’s and have perfected my designs and dimensions and it only took 25 years.

Cubical Quad Antenna Calculator

WE ARE STARTING TO BUILD A TRI-BAND 2 ELEMENT HF BEAM AND ALSO A 5 BAND 2 ELEMENT HF BEAM ON AN 8 FOOT BOOM. BUILT MUCH LIKE THE OLD LIGHTING BOLT QUAD THAT WAS A GREAT ANTENNA THAT WAS SOLD AS A KIT, WILL HAVE MORE LATER.

PRICE TO COME LATER

Take a look at the photos and the quality of our products and when you decide you’re ready to go to the next level, contact me, Randy, atwb5qfm@gmail.com or call 318-773-6877.

PRODUCTS

2 Meter Cubical Quads

4 element cubical quad 9 dbi gain $ 85.00

8 element cubical quad 14 + dbi gain $160.00

we are now building a 8 element 2 meter inside a 4 element 6 meter quad on a 8 foot boom. you can go to e-bay and look under quad antenna, will be under judyandrandytaylor .

PHOTOS

View of hairpin and spreaders attached to boom.

Plotted 8 Element 2 Meter

CUSTOMER COMMENTS

All About Cubical Quad Antennas

2 Element Cubical Quad Antenna

8 Element Cubical Quad

Boom and spreader assembly

View of stainless steel hairpin and fiberglass spreaders attached to boom.

All About Cubical Quad Antennas

Questions and Comments