Give the guy at kn2c.us a call. He will steer you in the right direction for the AM tracker. We HAMS call it Foxhunting. I'm a advocate and active recruiter of truck drivers (especially O.T.R) into the ham hobby... Many of you drivers are missing out on some wonderful technological advances that you can apply and use for the rest of your (and your families) lives. Also all Truckers should be SKYWARN.org members.
aimhigh