Kenwood TH-F7A, Instruction Manual, Page: 6 / 60

2
1 PREPARATION
CONNECTING TO A REGULATED POWER
SUPPLY
To connect the transceiver to an appropriate
regulated power supply, use an optional PG-2W
DC cable.
1 Confirm that the power of both the transceiver and
the power supply are OFF.
2 Connect the optional PG-2W DC cable to the
power supply; the red lead to the positive (+)
terminal, and the black lead to the negative (–)
terminal.
3 Connect the barrel plug on the DC cable to
the
DC IN jack of the transceiver.
If the transceiver is turned OFF while a regulated
power supply is connected with the
DC IN jack, it
automatically initiates charging the Li-ion battery pack
(PB-42L).
Note:
◆
The supply voltage must be between 12.0 V and 16.0 V to
prevent damaging the transceiver. If input voltage exceeds
approximately 16.5 V, warning beeps sound and “VOLTAGE
ERROR” appears. Remove the DC IN jack plug immediately.
◆
If the DC power supply voltage is above 14.5 V DC and “H”
(High Power) is selected, “H” icon blinks and the output power
is reduced to “L” level (Low Power) automatically {page 39}.
CHARGING THE OPTIONAL Li-ion
BATTERY PACK (PB-42L)
The Li-ion battery pack can be charged after it has
been installed onto the transceiver. The battery pack
is provided uncharged for safety purposes.
1 Confirm that the transceiver power is OFF.
• While charging the battery pack, leave the
transceiver power OFF.
2 Insert the charger plug into the DC IN jack of the
transceiver.
Note: If the DC power supply voltage is below 12.0 V DC, you
may not be able to charge the Li-ion battery pack (PB-42L).
3 Plug the charger into an AC wall outlet.
• Charging starts and 2 LEDs on the top panel
lights orange.
4 It takes approximately 6.5 hours to charge an
empty PB-42L Li-ion battery pack. When charging
completes, the LEDs unlight; remove the charger
plug from the transceiver
DC IN jack.
5 Unplug the charger from the AC wall outlet.
Note:
◆
If you turn the transceiver ON and press [F], [LOW/ BATT]
while charging the battery pack, “CHARGING” appears.
“STANDBY” appears when the charging completes.
◆
The transceiver becomes warm while charging the battery
pack.
◆
If the charger plug is plugged into the DC IN jack before the
battery pack is attached, turn the transceiver ON and then
OFF again to initiate the charging.
◆
Exceeding the specified charge period shortens the useful life
of the Li-ion battery pack.
◆
The provided charger is designed to charge only the provided
PB-42L Li-ion battery pack. Charging other models
of battery packs may damage the charger and battery pack.
◆
Do not press [PTT] while charging.
◆
The battery pack must be kept in cool and dry place.
◆
Never leave the battery pack in the direct sun light.
CONNECTING TO A CIGARETTE LIGHTER
SOCKET
To connect the transceiver to the cigarette lighter
socket in your vehicle, use an optional PG-3J
Cigarette Lighter cable.
Use only the PG-3J, as it has a built in surge protection circuit.
Using other cables may cause smoke or fire if there is a voltage
surge.
While the PG-3J is connected to the cigarette lighter
plug, the transceiver automatically start charging the
Li-ion battery pack (PB-42L). When you operate the
transceiver, it charges the Li-ion battery pack in back
ground. If the transceiver is turned OFF, the 2 LEDs
light orange while charging. When the charging
completes, they turn OFF.
To connect with an external 24 V power source via a DC-DC
converter, only use the PG-3J. Using the PG-2W or other cables
in this situation may cause smoke or fire.
PG-2W
2 4 V
1 2 V
2 4 V
PG-3J
1 2 V
1 2 V
2 4 V PG-3J
Note: If the input voltage exceeds approximately 16.5 V, warning
beeps sound and “VOLTAGE ERROR” appears.
DC IN jack
DC 12 V
Fuses (4 A)
DC IN jack
DC IN jack
DC-DC Converter
DC-DC Converter
Socket