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The following functions occur automatically:
¥ The radio antenna is electrically disconnected and the vehicle antenna is
connected for use.
¥ The radio internal microphone is electrically disconnected and the Vehicle
AdapterÕs mobile microphone is connected for use.
¥ The Vehicle Adapter charger is connected to the radio battery.
¥ If an external speaker is connected and the internal audio ampliÞer in the
Vehicle Adapter is selected, the Vehicle Adapter will automatically mute the
radio internal speaker and route received messages to the external speaker.
The audio level of the speaker is set by the radio volume control setting.
When using an external speaker, turn the volume control
!
up slowly to the desired audio level to avoid damage
from high audio pressures.
WARNING
RF Switch
Before using the portable radio in the Vehicle Adapter Þt the appropriate
RF switch (See Table 2 below) to allow for the automatic switching from integral to
external antenna.
Switch Color Code
Brown
Green
Yellow
Blue
White
Fitting the RF Switch
1. Unscrew the radio antenna.
2. Screw the appropriate RF Switch Adapter into
the antenna socket.
3. Screw the antenna into the top of the RF
switch.
Note: With the RF Switch Þtted there may be
some degradation in radio performance (up to
1.5dB). When the portable radio is operated in the
Vehicle Adapter, the vehicle antenna
compensates for this degradation and improves
the overall radio performance.
Table 2 RF Switch Frequency Ranges
66 MHz to 88 MHz
136 MHz to 174 MHz
300 MHz to 350 MHz
403 MHz to 470 MHz
450 MHz to 527 MHz
Frequency Range
Figure 2 - Fitting RF Switch
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