Hytera DMR Service Manual

PreDriver
Attenuator
Q801
Q805
Q804
Finalstage
Q802ǃQ803
Microstrip
Matcher
Driver
Firststage
Tx/Rx
Switch
Harmonic
Filter
Microstrip Dual
Directional Coupler
ANT
Rx_PORT
Tx_PORT
9V1A_TX
B+
B+
Forward
Detector
Reflect
Detector
Alarm to ADC
VSWR Protection
TV_APC
Temperature
compensation
High
Temperature
Protection
ADC
Gain:-6 dB
Gain:15 dB
Gain:11dB
Gain:10 dB
Match
Match
Match
TXC
Final_Bias
Gain:16 dB
U302 OMAP
PLL U100
TX_VCO_L
Q103
L P F
RX_VCO_L
Q110
TX_VCO_H
Q100
RX_VCO_H
Q106
X100
19.2MHZ
Q102
Q111
Q107
TX LO:3dBm
MOD H
CLK
STB
DATA
LD
U500
DAC
RX_H_VCO
RX_L_VCO
TX_H_VCO
TX_L_VCO
Q109
VCO_Feed
back LPF
MOD L
TV_APC
Final_Bias
Z6100
U701
IF IC
Band-pass Filter1
Low-Noise Amp
Band-pass Filter2
Mixer
D6106
IF Filter
IF Processor
IF Amp
LPF
TV
1 2
1 2
Attenuator Control
10dB
Attenuator
1dB
Attenuator
3dB
RX
Switchÿs Power
9.1V
S P I
M C S I
C
Q6104
Q6105
Q6103
Q6102
C
RX LO:3dBm
X100
19.2MHZ
38
MD78X/MD78XG Block Diagram (RF Section)

Hytera DMR Specifications

General

Brand	Hytera
Model	DMR
Category	Radio
Language	English