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2
PANEL DESCRIPTION
■
IC-440 front and rear panels
q
MICROPHONE CONNECTOR
Connects the supplied microphone or cloning cable
(OPC-1122U).
q
DC output (same voltage as connected
battery or DC power supply)
w
TX line
e
GND
r
PTT
t
GND (microphone ground)
y
AF line
u
POWER
i
RX line
w
POWER RECEPTACLE
Accepts 13.8 V or 27.6 V DC with the supplied DC power
cable.
NOTE: DO NOT
use a cigarette lighter socket as a power
source when operating in a vehicle. The plug may cause
voltage drops and ignition noise may be superimposed
onto transmit or receive audio.
e
EXTERNAL SPEAKER JACK [SP]
Connects a 4
Ω
speaker. (p. 4)
• Audio output power is more than 5.0 W.
r
ANTENNA CONNECTOR
Connects a 50
Ω
antenna with a PL-259 connector and a
50
Ω
coaxial cable.
q
w
r
e
Front panel
Rear panel
q
i
Front panel view
ANTENNA INFORMATION
For radio communications, the antenna is of critical im-
portance, to maximize your output power and receiver
sensitivity. The transceiver accepts a 50
Ω
antenna and
less than 1:1.5 of Voltage Standing Wave Ratio (VSWR).
High SWR values not only may damage the transceiver
but also lead to TVI or BCI problems.
IC-440-1.indd 6
IC-440-1.indd 6
2008/06/25 15:59:29
2008/06/25 15:59:29