Realistic PRO-2022 - Block Diagram; System Block Diagram

BLoeK DIAGRAM
LOW /AIR/HI /RF AH?
+---~ AGC CONT . MIX f-1.-(
01 02 03
[ill)
o
30-54MHz
108-136HHz
136 .005-174HHz
10.7HHZ
IF AH? I--~
018
CRYSTA L
FILTER
AGC
10 .245MHz
,.....-i 'o 'h
, ,
OSC MIXER
IF AH?
O UAORA T URE .OET
NOl SE AH?
ICI
I SO UELCH I
>
I-
369 .3-501 .3MHz 118 .7-167 .1MHz
TRIPLER lE-....---t VCO (AIR/HI!
011 UHF LOW) ~
09 010
380-512MHz
UHF LOW RF AH?
MIX
04 05
806-960MHz
8UFFER
08
40 .7-64 .7HHz
VCO (LO W)
06 07
CERAMIC
FILTER
455KHz
AM IF AH?
OET.
022 023
I
,
UHF Hl RF AM P.
MIX
012 013 014
~ -J 816 .7-970 .7MHz
00 U8 LER
016 JE-
408 .35-485.35M Hz
VCO (UHF H IJ
015 017
SWITCHING
019
LO W
AIR
HI
GH
U HF LOW--.1
UHF Hl --.1
8 ANO SE LEC T
026- 32
ZE RO MA TIC
I C2 024
MUTE
02 0 021
lY:ïlLïiMEJ < >fo
~
,....-------, I; HE AO
AU OIO AMP . '" PHONE
IC2 IC3 ~
/
I
t--I--{')
'-'
AC120V
(240 V)
RECTIFIER
060
OC 13. 8V
036
,....---t---;. :. ---,
0 ,57
I-.+------t-~ , ---+---(
037
,....-- .
., ,....---------'
VOLT AG E
REG U LA TOR
lC5 040
VOL TAGE
REGU LATOR
rC 4
1 ..-- --- -'- --- ---,
OC-OC
CONVER TER
034 035
054-56
MEMORY
(RA M)
IC6
5 .6V
CP U
IC7
CPU CONTROL
033 041
Y ' 0 ' f-J
2 HHz I I I
PLL
rC8
LCD
6
.4 M Hz
~:O~
LOW PASS FILTER ~--J
036 037 038
I
K EY B OARD
De-AC
CONVER TER
025
LOW BAH .
OE T.
rC2 (1/ 4)
9V BAH .
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