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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
$!4!SOCKETINFORMATION
DATA2
PIN No.
NAME
DESCRIPTION
SPECIFICATIONS
q w
e
r
t
y
Rear panel view
1
DATA IN
Input terminal for data transmit.
( 1200 bps: AFSK/
9600 bps: G3RUH, GMSK)
Input level (1200 bps)
Input level (9600 bps)
: 100 mV
: 0.2 to 0.5 Vp-p
2
GND
Common ground for DATA IN, DATA
OUT and AF OUT.
———
3
PTTP
PTT terminal for packet operation.
Connect to ground to activate the
transmitter.
Input voltage (High)
Input voltage (Low)
: 2.0 V to 20.0 V
: –0.5 V to +0.8 V
4
DATA OUT
*
Data out terminal for 9600 bps op-
eration only.
Output impedance
Output level
: 10 k
˘
: 1.0 Vp-p
5
AF OUT
*
Data out terminal for 1200 bps op-
eration only.
Output impedance
Output level
: 4.7 k
˘
: 100–300 mV rms
6
SQL
*
Squelch out terminal. This pin is
grounded when the transceiver re-
ceives a signal which opens the
squelch.
s4O AVOID INTERFERING TRANSMISSIONS
connect squelch to the TNC to inhibit
transmission when squelch is open.
s+EEP2&GAINATANORMALLEVELOTH
-
erwise a “SQL” signal will not be out-
put.
SQL open
SQL closed
: Less than 0.3 V/
5 mA
: More than 6.0 V/
100 µA
* The pin 4 (DATA), pin 5 (AF) and pin 6 (SQL) output capabilities are for the MAIN Band’s AF and squelch by de-
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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
HSEND
r
MOD
t
AF
y
SQLS
u
13.8 V
i
ALC
q
8 V
w
GND
e
HSEND
r
BAND
t
ALC
y
VSEND
u
13.8 V
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