1.
Signal transmission booster
3.
Vehicle-mounted signal device
5.
Flexible antenna design
6.
Multiple frequency operation
7.
Different frequency linking
9.
Portable communication device
10.
Distant station control
12.
Electrical pressure measurement
13.
Signal transformation device
15.
Noise reduction circuit
16.
Frequency monitoring device
17.
Primary radio component
18.
Electrical energy source
19.
Mounting installation device
20.
Compact mobile antenna
21.
Signal reference point
22.
Cable connecting components
