The gamma-match involves tapping the hot feed from the coax at the right distance from the center point to properly match the impedance. (Named for the rought resemblance to the Greek letter gamma, in the same way as we have pi-networks, delta xfmrs, etc.).
I did service and repair on CB equipment a good few years ago. Some of the people I had to deal with were unbelievable. Ignorance of technical facts I can live with (hey we're not all experts in everything!), but the most annoying were the ones who were convinced they were always right, even when totally wrong. ("My rig puts out 50 watts now," even though the DC input was only 10W, for example!)
