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Battery case (Option)
q Install 2 R6 (AA) size alkaline
batteries into the optional
BP-216
BATTERY CASE
.
Be sure to observe the correct
polarity.
w Install the battery case as
shown at right.
A build in step-up convertor in
the BP-216 increases the volt-
age up to 5 V DC.
Keep battery contacts clean.
Its a good idea to clean bat-
tery terminals once a week.
DBattery information
The batteries may seem to have low capacity when used in
low temperatures such as +14 °F (10 °C) or below. Please
keep the battery case or pack warm in this case.
DBattery replacement
When the batteries become exhausted, the function display
may blink or have a lower contrast. In these cases, replace
all batteries with new, same brand, alkaline batteries.
External power operation
An optional cable CP-19R (for 12 V cigarette lighter socket)
can be used for external power operation.
.
Power supply range is between 5.511.0 V DC.
NEVER CONNECT OVER 11.5 V DC directly into
the DC power jack of the transceiver.
BE SURE to use CP-19R when connecting regulated
12 V DC power supply.
If a battery pack is attached, the voltage of the external
power must be within 11.516 V DC, otherwise, the bat-
tery power may be used for operation.
The maximum output power is 5.0 W regardless of the
power supply voltage.
Remove the cables from the transceiver when not using
it. Otherwise, the vehicle battery will become exhausted.
16
3
BATTERY CHARGING
ee
BATTERY CHARGING
CP-19R
(optional)
to a 12 V
cigarette lighte
socket
to
DC power
jack
Voltage indication
IC-T90A-1.qxd 02.7.24 03:36 PM Page 19 (1,1)
21


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