Motorola HT Series Service Manual page 31

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Antenna
RFJack
Figure 2-11
Pin Diode
Antenna
Varactor RF
Switch
Tuned Filter Amp
Control Voltage
from ASFIC
Recovered Audio
Squelch
RSSI
16.8 MHz
Reference Clock
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Varactor
Mixer
Tuned Filter
AGC
First LO
from FGU
Demodulator
Synthesizer
IF IC
SPI Bus
Crystal
Filter
Second
LO VCO