Watkins-Johnson Company WJ-8718-19/FE Instruction Manual page 85

CIRCUIT DESCRIPTION
WJ-8718-19/FE HF RECEIVER
3-2
sw
CTRL
1 UKI
REFERENCE IN
1
RF GAIN CONTROL
INPUT
SWITCHING
RF/lF
CONVERSION
MOTION
10 7 MHz
2ND IF ,
IF/DEMODULATOR SECTION
vht
OUT
PREO. . * M»Z I L
EXT. ^
SYNTHESIZER
SECTION
I,
MODE
SEL
TUNING DATA I
POWER
SUPPLY
SECTION
TUNINC
DATA
DC VOLTAGES
TO RECEIVER
OlGlTAL CONTROL SECTION
Figure 3-1. Receiver Overall Block Diagram.
GAIN AUOlO
SEL
3RD IF
LINE AUDIO
SSvLINE
AUDIO
MONITOR
RS-«2? DATA