PRECAUTIONS FOR INSTALLATION OF ON-VEHICLE RADIO TRANSMISSION EQUIPMENT


The computers (control unit) for various on-vehicle electronic equipment are provided with sufficient protective measures against external radio wave interference. However, because the on-vehicle radio transmission equipment may affect adversely the computers (control unit), pay attention to the following precautions for installation.

  • Install radio transmission equipment and antenna (including coaxial cables) 200 mm or more away from the computers (control unit) for on-vehicle electronic equipment.
  • Because radio wave is radiated from the coaxial cables of the antenna for radio transmission equipment, do not route the cables in parallel with the vehicle wiring harness.
  • Install only radio transmission equipment with the frequencies, output, and radio wave types described in the table.
FREQUENCY, OUTPUT, AND RADIO WAVE TYPE OF THE RADIO TRANSMISSION EQUIPMENT
Frequency (MHz)
Transmission output (W)
Radio wave type
3.5
50
CW, SSB, AM, FM
7
14
21
28
50
FM
144
430
900
5
1,200


  • Install the antenna for radio transmission equipment only to the position shown in the figure.