Contact information:

Dave, AI7R
Development and Manufacturing

Charlie, AD7MD
Design & Engineering

Linda, NI7Y
Shipping and Accounting

CCDAntennas
1605 W Barrow Drive
Chandler, Arizona 85224
(480)-510-1721

The CCD is like most other antennas in that it can work on bands it's not designed for.  It's not, however, purely harmonic like a normal dipole.

Of course, SWR isn't the whole story on any antenna.  How well an antenna works on receive is as important as transmit and often even more important.  Although they have a nice gain on transmit on the bands they are built for, how quiet they are, and how they seem to have some gain on receive is very important.  And this is not something you can get from a computer modeling program.  It has to be experienced.

In the charts below you'll see they do, indeed, tune up on other bands and in many cases very nicely.  But, they will not have the same properties as a CCD on those other bands.  For example, I had a 20, 40, and 80 meter CCD up and on a switch so I can quickly compare them.  You would assume I could receive great signals on 20 using an 80 meter antenna since it's so much longer than the 20.  Not the case!  Each antenna actually worked best on transmit and receive on the bands they are specifically designed for.

The standard build of the antennas (and those tested) are:

20 meter only - 22 caps of 100pf

20/40 meters - 22 caps of 270pf

40/80 meters - 28 caps of 500pf

So, check these out! These are the computer models of the new 20 meter and the dual banders.  I have personally put up all three and found the SWR curve and performance to match the computer model or exceed the charts.  Of course, different mounting, ground, and other variations may change your results.

20/40 dual bander - computer model

40/80 dial bander - computer model