Operation Manual
8
1
PANEL DESCRIPTION
D DATA socket
D ACC socket
ACC
PIN No.
NAME DESCRIPTION SPECIFICATIONS
1234
8765
9
101112
13
Rear panel view
q brown i gray
w red o white
e orange !0 black
r yellow !1 pink
t green !2 light
blue
y blue
u purple !3 light
green
1 8 V Regulated 8 V output.
Output voltage : 8 V ±0.3 V
Output current : Less than 10 mA
2 GND Connects to ground. ———
Input/output pin.
(HF/50 MHz only) Ground level : –0.5 V to 0.8 V
3
HSEND
Goes to ground when transmitting. Output current : Less than 20 mA
When grounded, transmits. Input current (Tx) : Less than 200 mA
4 BDT Data line for the optional AT-180. ———
5 BAND
Band voltage output.
Output voltage : 0 to 8.0 V
(Varies with amateur band)
6 ALC ALC voltage input.
Control voltage : –4 V to 0 V
Input impedance : More than 10 kΩ
7 NC ——— ———
8 13.8 V 13.8 V output when power is ON. Output current : Max. 1 A
9 TKEY Key line for the optional AT-180. ———
“High” level : More than 2.4 V
10 FSKK Controls RTTY keying “Low” level : Less than 0.6 V
Output current : Less than 2 mA
11 MOD
Modulator input. Input impedance : 10 kΩ
Connects to a modulator. Input level : Approx. 100 mV rms
AF detector output.
Output impedance : 4.7 kΩ
12 AF Fixed, regardless of [AF] position in
Output level : 100–300 mV rms
default settings.
13 SQLS
Squelch output. SQL open : Less than 0.3 V/5 mA
Goes to ground when squelch opens.
SQL closed : More than 6.0 V/100 µA
DATA
PIN No.
NAME DESCRIPTION
12
34
56
Rear panel view
1 DATA IN Input terminal for data transmit. (1200 bps: AFSK/9600 bps: G3RUH, GMSK)
2 GND Common ground for DATA IN, DATA OUT and AF OUT.
3 PTT P PTT terminal for packet operation. Connect ground to transmit data.
4 DATA OUT Data out terminal for 9600 bps operation only.
5 AF OUT Data out terminal for 1200 bps operation only.
Squelch out terminal. Becomes ground level when the transceiver receives a signal
which opens the squelch.
6 SQ •To avoid unnecessary TNC transmission, connect squelch to the TNC to inhibit trans-
mission when receiving signals.
• Keep audio output at a normal level, otherwise a “SQ
”
signal will not be output.
Color refers to the cable strands of the supplied cable.
ACC 1 ACC 2
q FSKK t AF
w GND y SQLS
e HSEND u 13.8 V
r MOD i ALC
q 8 V t ALC
w GND
y VSEND
e HSEND
u 13.8 V
r BAND
1234
8
8
765
9
101112
13
1
2
3
4
76
5
1
2
3
4
7
6
5
Connect to ACC socket
• When connecting the ACC conversion cable (OPC-599)
1