11 Meter Antennas


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Antenna Basics

Coax Basics

Antenna Types
I. Omnidirectional

II. Directional
Mobile Antennas

Performance Tips

Antenna Building


Get the true facts about different type of Citizen Band / 11 Meter antennas!



I have been studying dual polarity quad such as the Avanti PDL-II pictured above. Stay tuned for my latest article on building the ultimate dual polarity cubical quad!


Hello, this site is dedicated to bringing true information about the different types of antennas you can use, buy and build for Citizen Band Radio and 11 Meter DXing. From concept to construction, I have set out to provide the most technically correct information possible. It contains information from antenna basics to advanced antenna theories such as the angle of radiation. I believe that it is not necessary to have great knowledge of electric fundamentals to understand how an antenna works. I have included tons of figures so that you can see what I am talking about! This site should be of interest to all CB users and 11 meter DXers because the station antenna provides the most improvement in station performance (even more so than an amplifier) when it is built correctly.

I decided to do this after all the info I read at antenna manufactures web sites. They all try to sell you their antenna. On one site I read says top loaded mobile antennas are the best, even better than base loaded. Then you read the web site of a company that makes base load mobiles only to find out base loaded are the best. Good thing is, I am not trying to sell you an antenna. Most of these web pages (and ad's in magazines) are done by the advertising department, not by the antenna engineers. And those advertised gain numbers are not regulated by any government agency! If you are looking for quick answers, frequently asked questions, this is not the place to start reading. I recommend reading it all, so that you get all the important concepts. Another reason I decided to this page is lack of good information on the web about antennas in general. Everyone has a "resource" site with a 1000 dead links to antennas manufacture pages....but no one has any real content. So here is my attempt at it! If there are any section that you would like to see added, let me know.

This page has to be viewed at a resolution greater than 800x600. I am sorry if you can not turn up the resolution any higher than 800x600, but I had to make the figures big enough to show detail clearly. You know your resolution is too small if you have to scroll out to read the end of each line in the sections (not this page, however).

The Yagi building page is up!

- Scott, 2 Sugar Delta 789

Update : August / 2013

The Website from Signal Engineering has been off the web for quite some time , I have recently made contact with Scott, the original author of the "Ultimate Guide to CB Antennas" web page. He has given me permission to re post the information contained in the old signal engineering web site. I have provided an E-Mail address for questions or comments below , however I can not answer any questions regarding Signal Engineering as I have no information other than their site is no longer available. I will be making minor changes to the site to bring it up to date, like in the coax section, I will remove some of the specifications on outdated coax that is no longer available and replacing it with more modern coax like LMR-400 Etc. Again, just minor changes to bring things up to date just a bit. If you have questions, comments or wish to make a suggestion, or if you would like to see something added to the site, please send an email to. webmaster@cbantennaguide.com

Antenna Basics

Where to start reading if you are not really familiar with antenna basics such as radiation resistance, SWR, antenna bandwidth and polarization. Even if you have heard of these terms, read on to get a better understanding of all the essential fundamental antenna subjects. Discussion on the different type of antennas will use terminology explained here.

Coax Basics

Information about coaxial cable. Wonder why changing the your coax length changes the SWR of your antenna? Subjects such as impedance and velocity factor will be explained.

Antenna Types

Details the most common types of antennas used on 11 meters. Different types of omnidirectional and beams are covered and explains which design most common commercial CB antennas use. This is the section to read if you do not want to build your own antenna but figure out which commercial design best suites you. Make sure you read the "Hybrid" section if you own a Moonraker (or any beam with a quad reflector) for an important note.

Mobile Antennas

Explains mobile antenna basics.

Performance Tips

Four ways to improve your stations performance greatly.

  • Co-Phase your antennas for 3db more gain
  • Circular Polarize your dual polarity beam for solid DX contacts
  • Angle of Radiation, Match the height of your antenna to the distance you are trying to communicate
  • Really Ground that radio for improved receiver performance!

Antenna Building

Build your own optimized DX antenna. Not for the faint of heart. Now includes a JavaScript Calculator to fully automate designing the antenna for the frequency you talk on (Cubical Quad)!

  • 4 Element Cubical Quad
  • 4 Element Yagi NEW!