Plug/Connector Pinout Diagrams - Yaesu FT-991A Operating Manual

Installation and Interconnections

Plug/Connector Pinout Diagrams



( as viewed from front panel )
RTTY/DATA
① ②
③ ④
⑤ ⑥
( as viewed from rear panel )
DC IN
( as viewed from rear panel )
EXT SPKR
SIGNAL GND
TX REQ
EXT ALC
F T-991 Operating Manual
MIC
DOWN

UP

+5V

MIC GND

MIC

PTT

GND

FAST

① DATA IN
② GND
③ PTT
④ SHIFT
⑤ DATA OUT
⑥ SQL
Manipulator
DOT DASH COMMON
REM/ALC
GND
GPS/CAT
① DCD
② SERIAL OUT/RXD
⑨ ⑧ ⑦ ⑥
（GPS DATA IN）
③ SERIAL IN
④ DTR
⑤ GND
⑥ DSR
⑤ ④ ③ ② ① ⑦ RTS
⑧ CTS
⑨ RI
( as viewed from rear panel )
TUN/LIN
+13V OUT


TX GND

 
GND

TX D (BAND A)

 
RX D (BAND B)

BAND C

 
RESET (BAND D)


TX INH

( as viewed from rear panel )
KEY
Single key/Double-speed key
KEY GND
Do not use
2-conductor type plug
PHONE
SIGNAL (RIGHT)
SIGNAL (LEFT) GND
NC
REMOTE GND
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