Motorola APX 5000 - Figure 3-4. Receiver Block Diagram (UHF2); Figure 3-5. Receiver Block Diagram (700;800 Mhz)

Sec 1: 3-4 Basic Theory of Operation: Analog Mode of Operation
Figure 3-4. Receiver Block Diagram (UHF2)
Figure 3-5. Receiver Block Diagram (700/800 MHz)
Digital RF
Atten.
SP2T
Rx/Tx
Abacus III
2nd
LO
18Mhz
CLK
Σ∆ ADC
CLK
Synth
Dec.
Filter
SSI
LO
Synth
RF ANT. AUX ANT.
SP2T
RF/AUX
50 ohm
Reversed
Power
To Tx
To RF/Vocon/GPS
Connector
UHF2 UHF2
Digital RF
Atten.
SW SWSW SW
SP2T
Rx/Tx
700 700
800 800
Abacus III
2nd
LO
18Mhz
CLK
Σ∆ ADC
CLK
Synth
Dec.
Filter
SSI
LO
Synth
RF ANT. AUX ANT.
SP2T
RF/AUX
50 ohm
Reversed
Power
To Tx
To RF/Vocon/GPS
Connector