Racal Instruments RA6790/GM Instruction Manual page 101

t
o
fROM
PRODUCT
DETECTOR
fROM
FM
DETECTOR
AUDIO ...
--.
AUDIO
~
.
DETECTOR
SELECT
A
FROMA9
RECEIVER
CONTROL
FROMA5
IS8 AUDIO
FILTER
---.
AUDIO
~ AMP
AUDIO ~
.
......
ATTEN-
UATOR
~
~-
CROSSPOINT
SWITCH
A
FROMA9
RECEIVER
CONTROL
~
-
-.
Figure 4-6. A4 AF Circuits Functional Block Diagram
. .
..
DRIV,E
...
AMP
.
DRIVE
AMP
..
TOA5
LINE AMP
TOJ7
MAIN LINE
TOJ7
AND
HEADPHONES