Furuno FS-1503 - RX AF Circuit

2-25
RX H3E
RX H3E
U18
3
4
5
9
6
8
U18
SSB, TLX
AM
8
RX AF OFF
INTERCOM
1
13
2
9
6
U20
U20
U20
34
5
MUTE
Q33
C139
U13 1/2
U10 1/2, 2/2
SQ SIG
LINE OUT
1
2
13 U19
C140
INTERCOM
C141
U13 2/2
89
6
U21
SP OFF
PHONE
SP
EXT SP
AF VR
TONE
TX TONE
TX AF LINE
LINE IN
U20
11 10
12
U19
11 10
12
LINE ON
C142
Q32
U19
9
6
8
MIC & TONE
LINE IN
U195
MIC ON
34
U14
U15
(TDA2003H)
RX AF OFF
SP OFF
MIC&TONE
MIC ON
LINE ON
RX H3E
U11, 12
DATA
CLK
ST TX/RX
MUTE
CPU
MIC
(10mW/200
Ω
)
Figure 2-19 RX AF Circuit