Motorola APX 7000 Basic Service Manual page 173

Basic Theory of Operation: Analog Mode of Operation
RMT Port
AUX
RMT Port
AUX
PER SW
DPLXR
SP3T 2:1
To
RF/Vocon
Connector
Figure 3-4. Receiver Block Diagram (UHF1 and VHF)
PER SW
DPLXR
SP3T 2:1
To
RF/Vocon
Connector
Figure 3-5. Receiver Block Diagram (UHF2 and 700–800 MHz)
UHF1
VHF
2nd
LO
700/800
UHF2
2nd
LO
Sec 2: 3-3
SW
2:1
SSI
ΣΔ ADC Dec.
Filter
18Mhz
LO CLK
CLK
Abacus III
SW
2:1
SSI
ΣΔ ADC Dec.
Filter
18Mhz
LO CLK
CLK
Abacus III