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S:\HP83206A\USRGUIDE\MANUAL\is136bas.fm
Chapter 10, TIA/EIA-136 Basics
TIA/EIA-136 transceiver
TIA/EIA-136
Transceiver Block
Diagram
Figure 77 a TIA/EIA-136 Dual Mode Transceiver
Nyquist
Filter
Transmit
Speech
Decoder
Channel
Decoder
I/Q
Demodulator
Transceiver
Control Block
Speech
Coder
Channel
Encoder
π
/4
DQPSK
Modulator
FM Detector2:1 Expander
Tuned
RF Section
Local
Oscillator
RF
Amp
Filter
2:1
Compressor
Limiter FM
Modulator
Limit
Filter
S
peech In
Receive
S
p
eec
h
O
u
t
Antenna
Reverse
Reverse
ReverseReverse
Forward
Forward
Forward
Forward
Nyquist
Filter