17
Installing the Radio
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 impedance of 50Ω.
Keep the coaxial cable routing length as short as possible.
Connection of Antenna and Power Cables
Please follow the outline in the illustration regarding the proper connection of antenna
coaxial cables and Power Supply.
Cautions
•
Do not use a DC power supply cable other than the one that is provided.
•
Do not use the DC power supply cable with the fuse holder cut off.
•
Use an external power source capable of supplying DC 13.8 V, a current capacity of 15 A or
more.
Red
DC power cable
(supplied)
DC12 V battery
Fuse holder
Black
Antenna
30
Red
Direct current
13.8 V DC power supply
DC power cable
(supplied)
Fuse holder
Black
Antenna
