Hytera PD78XG - Block Diagram

Pre-Drive2 Drive-stage
Final-stage
Tx/Rx Switch
Low-pass Filter
Tx_VCO
AD9864
Frequency
Synthesizer
Rx_VCO
Band-pass Filter1
Low-Noise Amp
Band-pass Filter2
Mixer
IF FilterIF Processor
IF Amp
Ref. Osc
19.2MHZ
.
MOD1
MOD2+Freq error shift
OMAP
4CH DAC
GPS
module
BPF
HPF
ANT
Microstrip
Matcher
TV1/APC
LPF
RX/TX
VCO
amplifier
TO omap
TV1 /APC
From OMAP
TV1/APC
Reference OSC signal
CV Buffer
Pi Attenuator
1 2
BATT+
Stop band filter
Adapt
SW
Adapt control
APC module
Low-Noise Amp
OP
Pre-driver1
RX/TX
VCO buffer
LPF
LPF
Pi Attenuator
1 2
CV
SW
CV-read
control
CV out
1 2
Pi Attenuator
Pi Attenuator
PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G
Block Diagram (RF Section)
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11.5 Block Diagram