Block Diagarm

FCC ID: H38UEM-8DR

Block Diagram

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FCCID_1271671

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110.6MHz 10.7MHz
RF 1ST 1ST 1ST IF 2ST 2ST 2ST IF 2ST FM BAT & RX
FILTER MIXER IF FILTER AMPLIFIER MIXER IF FILTER AMPLIFIER IF FILTER DEMODULATOR INDICATOR
(T2) (IC1) (IFT2) (Q22) (IC9) (IFT1) (Q8) (IFT6) (IC9,T5) (LED1)
ANT.A

D D
RF RF ENCODER 2ST IF 2ST +5V BAT & ST/MONO CONNECTER
FILTER AMPLIFIER AMPLIFIER IF FILTER REGULATOR SWITCH
(T1) (Q1) (SW3) (Q20) (IFT4) (TR4) (SW4) (CN5)

X1
12M
CN7
PLL AF POWER STEREO TONE
1ST VCO FREQUENCY 2ST VCO
SYNTHESIZER O/P MUTE AMPLIFIER CONTROL
(Q26) (Q25) (Q12,Q13,Q19) (IC8) (VR1)
(IC3)
ANT.B AF POWER OUTPUT
TO CN4

RF RF MCU +3V 2ST IF 2ST +5V CONNECTER
FILTER AMPLIFIER REGULATOR AMPLIFIER IF FILTER REGULATOR
(T3) (Q16) (IC16) (IC59) (Q17) (IFT7) (TR7) (CN3)

C C
RF 1ST 1ST 1ST IF 2ST 2ST 2ST IF 2ST FM
FILTER MIXER IF FILTER AMPLIFIER MIXER IF FILTER AMPLIFIER IF FILTER DEMODULATOR
(T4) (IC2) (IFT3) (Q23) (IC6) (IFT5) (Q18) (IFT8) (IC6,T6)

AF MUTE LOW PASS AF AF MUTE
AMPLIFIER SWITCH FILTER EXPANDER AMPLIFIER SWITCH
(IC10) (Q11) (IC12B.C.D) (IC7B) (IC12A) (Q10)

STEREO
MULTIPLEXER DEMODULATOR MULTIPLEXER
(IC15C) (IC15A.B)
(IC11)
B B
AF MUTE LOW PASS AF AF MUTE
AMPLIFIER SWITCH FILTER EXPANDER AMPLIFIER SWITCH
(IC13) (Q15) (IC5D.C.B) (IC7A) (IC5A) (Q14)

VOLTAGE SQ PRESET
CONNECTER COMPARATOR VOLTAGE
(CN4)
(IC4D) (VR8)
TO CN5
RSSI VOLTAGE MUTE BAT.LO CONNECTER
AMPLIFIER COMPARATOR SWITCH INDICATOR
(TR1) (IC4B) (Q4) (Q9) (CN6)
CN1
BAT9V
VOLTAGE
MIXER
(D5,D6) GND
RSSI VOLTAGE RECEIVE
AMPLIFIER COMPARATOR INDICATOR
A (TR2) (IC4C) (Q7) A
Title
VOLTAGE UEM-8DR-電路方框圖
COMPARATOR
(IC4A) Size Number Revision
A4 1
VER080322
Date: 2-Jul-2008 Sheet of 1
File: D:\ICQ\442818613\UEM-8T.DDB Drawn By: HECHANGZHI
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Document Created: 2010-02-26 10:44:19
Document Modified: 2010-02-26 10:44:19

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