Motorola GM1200E

Reducing Noise Interference in Mobile Two-Way Radio Installations 2-i
Chapter 2
Reducing Noise Interference in
Mobile Two-Way Radio Installations
Table of Contents
Table of Contents
Paragraph Page
1.0 Introduction................................................................................................ 1
2.0 Noise Sources............................................................................................ 1
2.1 Radiated Noise ............................................................................................ 1
2.2 Conducted Noise ......................................................................................... 2
2.3 Induced Noise.............................................................................................. 2
3.0 Operation of a Conventional Ignition System......................................... 3
4.0 Detection of Noise Sources...................................................................... 4
5.0 Noise Reduction Techniques.................................................................... 7
5.1 General........................................................................................................ 7
5.2 Ignition System Interference........................................................................ 7
5.3 Battery Connections .................................................................................... 8
5.4 Alternator/Generator Whine......................................................................... 9
5.5 Voltage Regulator Noise............................................................................ 10
5.6 Hood and Trunk Lid Noise......................................................................... 10
5.7 Other Electrical Noises .............................................................................. 11
5.8 Wheel Static............................................................................................... 11
5.9 Ground Bonding......................................................................................... 11
5.10 Extender Radios ........................................................................................ 12