Google to the rescue!

"Simple antenna tuner":

http://www.radiohc.org/Distributions...na-tuner2.html

http://www.antennex.com/hws/ws0500/pinet.htm

http://www.hard-core-dx.com/nordicdx...lab/tuner.html

http://www.qsl.net/wb3gck/tuner.htm

Go nuts ... have fun.

jw
k9rzz