TWIN
-
PBT
RIT/ TX
ԥ
NOTCH
CW PITCH
VOICE MEMORY
BAL NR
AF RF/SQL
MIC GAIN RF POWER BK
-
IN DELAY KEY SPEED
TIMER
PHONES
ELEC
-
KEY
MIC
AUTO
TUNE
GENE F
-
INP
1. 8 3.5
12
14
5
18
6
7
3
24
8
28
9
50
0
ENT
4
7
10
21
CHANGE
TS
XFC
SPLIT
DUAL
WATCH
MAIN
/
SUB
M.SCOPE
VFO/MEMO
MP
-
W
MW
MP
-
R
F
-
6
F
-
5
F
-
4
F
-
3
F
-
2
F
-
1
NRNB
PBT
-
CLR
APF/TPF
NOTCH
POWER
RIT
CLEAR
TX
ԥ
SPEECH
LOCK
FILT ER
RECPLAY
EXIT
/
SET
SSBCW
RTTY
/
PSK
AM/FM
MONITOR
TRANSMIT
TUNER
HF/50MHz TRANSCEIVER
LOCKTX RX SPLIT
MIC
USB-MEMORY
MOUSE
The AFSK modulation signal can also
be input to [MIC].
KEYBOARD
Connect a USB type PC keyboard
for direct RTTY/PSK operation, as
well as other text edit operations.
EXTERNAL KEYPAD
Connect an external keypad for direct voice memory, keyer
memory, RTTY TX memory and PSK TX memory controls.
HEADPHONES
To [MIC] connector pin e
To [MIC] connector pin u
1.5k˘
±5%
1.5k˘
±5%
2.2k˘
±5%
4.7k˘
±5%
S1
(T1/M1/
RT1/PT1)
S2
(T2/M2/
RT2/PT2)
S3
(T3/M3/
RT3/PT3)
S4
(T4/M4/
RT4/PT4)
EXTERNAL KEYPAD
12ANT
DC 13.8V
X-VERTER
RX-ANT
ACC
TUNER
IN OUT ALC SEND
KEY
12
METER
REMOTE
EXT
-
SP
RX ANT IN/OUT
Connect an external
preamp or lowpass filter.
The antenna connector
must be selected as “ANT
1/R” or “ANT 2/R.” (p. 3)
ACC SOCKETS 1, 2
(pp.
22
,
26
)
ANTENNA 1, 2 (p. 120)
Connect a linear amplifier,
antenna selector, etc.
[X-VERTER]
Connect a transverter
for VHF, UHF or other
band use.
[ALC], [SEND] (p. 22)
Used to connect a non-
Icom linear amplifier.
EXTERNAL SPEAKER
(p. 171)
[REMOTE] (p. 159)
Used for computer
control and transceive
operation.
The optional CT-17 is
required when connect-
ing a PC to [REMOTE].
AH-4 (p. 21)
AH-2b
or long wire
with
SP-23
(option)