Telex RADIOCOM TR-1 User Manual

Page 7

background image

1-4

D/A

DSP

RECEIVER

TRANSMITTER

A/D

DE

EMPHASIS

EXPANDER

PRE

EMPHASIS

COMPRESSOR

SQUARING

AMP

LOW PASS

FILTER

RX

AUDIO

GATE

ELECTRET/

DYNAMIC

DETECT

TX

1

2

3

4

VOLUME

MIC

GAIN

Fig ure 1-2

TR-1 Block Diagram