2.
Interrupting conversation
3.
Truckers communication group
5.
Understanding transmission
6.
Communication frequency
7.
Noise reduction control
10.
Unmodified radio setup
11.
Long distance transmission
13.
Unauthorized frequency use
14.
Modified radio operator
15.
Radio signal adjustment
17.
External signal device
18.
Signal information method
19.
Signal transmission technique
20.
Excessive conversation
22.
Highway patrol reference
23.
Standard calling channel
24.
Signal riding technique
