6
CON 1(8pin circular plug) does not connect to microphone
Table 6. YAESU 8pin circular plug (Y-8P): FT-847, 920,990,1000MP,
Connector pin
Color
Function
Connection
terminal
Remarks
CON3-3
Orange PTT
J3-3
CON3-4
Yellow PTT GND
J3-4
CON3-5
Green
UP
J3-5
CON3-6
Blue
DOWN
J3-6
CON3-7
Purple U/D Com.
J3-7
CON3-8
White
+B Power
J3-8
J1-1
Red
Circuit
+B
supply
J2-8
J1-4
Black
MIC input
J3-1
PCB ground
Black
GND
J3-2
CON1-1
Brown UP
J2-5
CON1-2
Red
+B Power
J2-8
CON1-3
Orange DOWN
J2-6
CON1-4
Yellow FAST
N/A
CON1-5
Green
PTT GND
J2-4
CON1-6
Blue
PTT
J2-3
CON1-7
Purple MIC GND
J2-2
CON1-8
White
MIC
J2-1
CON 2(Modular plug) does not connect to microphone
Table 7. YAESU 8pin circular plug (P-88Y): FT-840, 1000,1011,1021
Connector pin
Color
Function
Connection
terminal
Remarks
CON3-3
Orange PTT
J3-3
CON3-4
Yellow PTT GND
J3-4
CON3-5
Green
UP
J3-5
CON3-6
Blue
DOWN
J3-6
CON3-7
Purple U/D Com.
J3-7
CON3-8
White
+B Power
J3-8
J1-1
Red
Circuit
+B
supply
J2-8
J1-4
Black
MIC input
J3-1
PCB ground
Black
GND
J3-2
CON1-1
Brown UP
J2-5
CON1-2
Red
U/D Com. J2-7
CON1-3
Orange DOWN
J2-6
CON1-4
Yellow FAST
N/A
CON1-5
Green
-
N/A
CON1-6
Blue
PTT
J2-3
CON1-7
Purple MIC GND
J2-2
CON1-8
White
MIC
J2-1