FO-4. Part 482902-1 1st LO/1st Converter PC Assembly (A3A1)
Functional Block Diagram
FP-7/(FP-8 blank)
WJ-8611 DIGITAL VHF/UHF RECEIVER
INPUT
PROTECTION
RF
PRESELECTION
A 500 - 1000 MHz
B 250 - 500 MHz
C 125 - 250 MHz
D 60 - 125 MHz
E 20 - 60 MHz
BYPASS
RF AMPLIFIER
1ST MIXER
AMPLIFIER
0 - 1000 MHz
LP FILTER
1ST IF FILTER
CF=1350 MHz
LP FILTER
PHASE
DETECTOR
DIVIDE BY 8
DIVIDE BY A/N
COUNTER
LOOP FILTER
SIX-BAND VCO
1370 - 2350 MHz
DIVIDE BY
16/17
MODULUS COUNTER
DIVIDE BY 2
PRESCALER
16-dB
ATTENUATOR
10 MHz
REFERENCE
1ST LO/1ST
CONVERTER
CONTROL
REGISTER
RF 16
ATTENUATION
CONTROL
PRESELECTOR
STB
1ST LO STB
DATA1
CLK1
PRESELECTOR TV
PRESELECTOR
BAND CONTROL
VCO FREQUENCY
CONTROL
1ST IF OUTPUT
1349.15-1352.649 M Hz
IF SPECTRUM
1ST LO
1370-2350 MHz
2.5 MHz INCREMENTS
95-1210
1ST LO SYNTHESIZER
Courtesy of http://BlackRadios.terryo.org
Содержание WJ-8611
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