How to find out the frequency for the inside of the truck

david alexander New member Username: Davidalexander Graham, Texas Us Post Number: 7 Registered: Dec-04	Posted on Thursday, March 03, 2005 - 03:55 GMT how do u find the frequency of the inside of a truck and how do u adjust from finding that out?
Joe Smoe Gold Member Username: Invain Michigan United States Post Number: 1177 Registered: Aug-04	Posted on Thursday, March 03, 2005 - 04:01 GMT You have to use a certain kind of mic.