Jim,
Regarding the recent blog article “Constructing an Improvised CB Radio Antenna”, here is a site that has good construction info and a few graphical images of custom built CB antennas [1] This site by Signal Engineering adds some antenna theory [2] for those inclined to learn more about CB antennas.
If you are into experimenting with antennas, I recommend getting an antenna analyzer from MFJ [3]. They are fairly inexpensive (as far as test equipment go) yet will yield very helpful tuning and optimization information. You can purchase one for use in nearly any radio service (ham, CB, VHF/UHF. etc).- Rob at Affordable Shortwaves [4]