3 - 7
37
39
40
41
42
48
49
50
51
52
53
54
55
57–60
61–64
65–67
68
69
70
71
72
Outputs AF gain control signal to the
control (IC36).
Outputs the "tuner start" pulse to an
optional AT-130E.
Outputs a BEEP signal (1 kHz or
500 Hz).
Outputs a strobe signal to the main
loop PLL IC (C3005).
Outputs a strobe signal to the refer-
ence loop DSS IC (IC3001).
Outputs a strobe signal to the BFO
PLL IC (IC3002).
Outputs a data signal to PLL and
DDS ICs.
Outputs a clock signal to PLL and
DDS ICs.
Outputs an AF mute signal for squelch
function.
High : Squelch closed.
Outputs a “noise blanker” signal.
High : Noise blanker is on
Outputs an AGC -OFF signal.
High: AGC deactivate.
Outputs an external NBDP equip-
ment control signal.
Low: During NBDP data output.
Outputs a strobe signal for an initial
matrix.
Input ports for an initial matrix.
Output band signals for RF LPF and
BPF selection.
Outputs mode signals.
Input port for an optional AT-130E.
Low : During tuning.
Outputs a mode signal.
Outputs an antenna tuner tuning
control signal for transceiver’s power/
mode control.
Outputs a narrow filter selection sig-
nal.
Low : Optional narrow filter selec-
tion.
Outputs a program scan control signal
for “AGC fast” and “audio squelch”
deactivation.
AFG
STAT
BEEP
STB1
STB2
STB3
DATA
CK
SQL C
NBS
AGCS
NMS
P20
P17–P14
PD–PA
J2B, R3E,
H3E
KEY
CW
TUNE
FSEL
PROG
(MAIN unit; IC132)–Continued
Pin Port
Description
number name