1 2 3 4
D D
BR9000-PTT-V3
S3
SQ
R1
C C
150K
S2
R2
DOWN
100K
S1
R3
UP
C2
47K
103P
UP/DN
J3
PR-0084
1 4
2 3
SW4
C3
PS-22E03
103P
PTT 4 3
5 2
B MK1 B
6 1
SD-11
R8
MIC
4K7
C1
103P
A A
1 2 3 4