![background image](http://html.mh-extra.com/html/icom/ic-756proiii/ic-756proiii_instruction-manual_612299016.webp)
11
1
PANEL DESCRIPTION
■
Rear panel
q
TRANSVERTER JACK [XVERT]
(p. 18)
External transverter input/output jack. Activated by
voltage applied to
[ACC(2)]
pin 6.
w
RECEIVE ANTENNA CONNECTOR [RX ANT]
(p. 15)
Connects a 50
Ω
general coverage antenna with an
RCA connector.
e
TUNER CONTROL SOCKET [TUNER]
(p. 15)
Accepts the control cable from an optional AH-4
HF/50 MHz AUTOMATIC ANTENNA TUNER
or AH-3
HF
AUTOMATIC ANTENNA TUNER
.
r
ACCESSORY SOCKET 1 [ACC(1)]
t
ACCESSORY SOCKET 2 [ACC(2)]
Enable connection of external equipment such as a
linear amplifier, an automatic antenna selector/
tuner, TNC for data communications, etc.
• See p. 20 for socket information.
y
STRAIGHT KEY JACK [KEY]
(p. 14)
Accepts a straight key or external electronic keyer
with
1
⁄
4
inch standard plug.
•
[ELEC-KEY]
on the front panel can be used for a
straight key or external electronic keyer. Deactivate the
internal electronic keyer in keyer set mode. (p. 43)
If you use an external electronic keyer, make
sure the voltage retained by the keyer is less
than 0.4 V when the key is ON.
u
CI-V REMOTE CONTROL JACK [REMOTE]
(p. 110)
➥
Connects a PC via the optional CT-17
CI
-
V LEVEL
CONVERTER
for external control of the transceiver
functions.
➥
Used for transceive operation with another Icom
CI-V transceiver or receiver.
i
EXTERNAL SPEAKER JACK [EXT SP]
(pgs. 15, 116)
Accepts an 4–8
Ω
speaker.
o
ALC INPUT JACK [ALC]
(p. 17)
Connects to the ALC output jack of a non-Icom lin-
ear ampli
fi
er.
!0
SEND CONTROL JACK [SEND]
(p. 17)
Goes to ground while transmitting to control exter-
nal equipment such as a linear ampli
fi
er.
• Max. control level: 16 V DC/0.5 A
!1
DC POWER SOCKET [DC 13.8V]
(p. 16)
Accepts 13.8 V DC through the supplied DC power
cable (OPC-025D).
Rear panel view
(
+
)
(
_
)
q w
!0
!1
e
r
t
y u i
o
!4
!3
!2