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10
1
PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
D
ACC socket information
• ACC socket
ACC
PIN No.
NAME
DESCRIPTION
SPECIFICATIONS
1 2 3 4
8
7
6
5
9 10 11 12
13
Rear panel view
Color refers to
the cable strands
of the supplied
cable.
q
brown
w
red
e
orange
r
yellow
t
green
y
blue
u
purple
i
o
!0
!1
!2
!3
gray
white
black
pink
light
blue
light
green
1
8 V
Regulated 8 V output.
Output voltage
Output current
: 8 V
± 0.3
V
: Less than 10
mA
2
GND
Connects to ground.
———
3
SEND*
Input/out-
put pin.
An external unit controls
the transceiver.
When this pin goes low,
the transceiver transmits.
Input voltage (High)
Input voltage (Low)
Current flow
: 2.0 V to 20.0 V
: –0.5 V to +0.8 V
: Max. 20 mA
The transceiver outputs
a low signal to control an
external unit.
Output voltage (Low)
Current flow
: Less than 0.1 V
: Max. 200 mA
4
NC
———
———
5
BAND
Band voltage output.
Output voltage
: 0 V to 8 V
6
ALC
ALC voltage input.
Control voltage
Input impedance
: –3 V to 0 V
: More than 3.3 k
˘
7
NC
———
———
8
13.8 V
13.8 V output when power is ON.
Output current
: Less than 1
A
9
NC
———
———
10
FSKK
Controls RTTY keying
“High” level
“Low” level
Output current
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
11
MOD
Modulator input.
Input impedance
Input level
: 10 k
˘
: Approx. 100 mV rms
12
AF
AF detector output.
Fixed level, regardless of the [AF]
control position.
Output impedance
Output level
: 4.7 k
˘
: 100 to 300 mV rms
13
SQL S
Squelch output.
Grounded when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
* When the SEND terminal controls an inductive load (such as a relay), a counter-electromotive force can cause
the transceiver’s malfunction or damage. To prevent this, we recommend adding a switching diode, such as an
“1SS133,” on the load side of the circuit to the counter-electromotive force absorption.
When the diode is added, a switching delay of the relay may occur. Be sure to check its switching action before
operation.
e
SEND
i
13.8 V
ACC
socket
Relay
Switching diode
To a non-Icom
linear amplifier
[Example]
8
1
2
3
4
7
6
5
1
2
3
4
7
6
5
q w e r
t y u i
o !0 !1 !2
!3
Connect to ACC socket
ACC 1
ACC 2
q
FSKK
w
GND
e
SEND
r
MOD
t
AF
y
SQL S
u
13.8 V
i
ALC
q
8 V
w
GND
e
SEND
r
BAND
t
ALC
y
NC
u
13.8 V
• When connecting the ACC conversion cable (OPC-599)