Telex Radiocom BTR-200 Series Service Manual page 41

RECEIVER 1
-1
EXPANDER
I--"~
__---------,
>--+
AUXOUT
RECEIVER 2
-1
EXPANDER
I---"~
__--""
BALANCE
INTERCOM GAIN
~ TRANSMIT OUT
INTERCOM
T
RS
HIGH/LOW
(ON VERSION 2 ONLy)
RECEIVER 3
-1
EXPANDER
I---"~
__
- - - - - - + I
RECEIVER 4
-1
EXPANDER
IC---....~
__
- . J
o
DYNAMIC/
ELECTRET
HEADSET
_~~ ....
I.4ICROPHONE ....
AUXIN
MIC GAIN
~
T
>---\-------11>
SPEAKER
Figure 19
Block Diagram Versions 1 and 2
3-31