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About the antenna
The antenna is an extremely important part for both transmitting and receiving. The
antenna type and its inherent characteristics determine whether the performance of the
transceiver can be fully realized. As such, please note the following:
Use an antenna that is suitable for the installation conditions and application
objective.
Use an antenna that is suitable for the operating frequency band.
Use an antenna and a coaxial cable with a characteristic feed point impedance of
50Ω.
Adjust the VSWR (Voltage Standing Wave Ratio) until it is 1.5 or less for an antenna
with an adjusted impendence of 50Ω.
Keep the coaxial cable routing length as short as possible.
Installing the antenna
● Antenna installation in a mobile unit
Install the antenna base to the rear of the car (rear bumper, trunk, rear gate, etc.) and
then attach the antenna to the base.
Cautions
z Verify that the antenna base is securely grounded to the car body.
z When using a coaxial cable included with a commercially-available on-vehicle antenna, lay the
cable in a way to keep it as short as possible.
z Do not allow rain water or moisture to penetrate the entrance of the cable or connectors when
routing the coaxial cable inside the vehicle.
Bumper type
Installing the transceiver
Trunk type
23
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