Figure 3-9. Transceiver (Uhf2) Block Diagram; Figure 3-10. Transceiver (700/800 Mhz) Block Diagram - Motorola APX 5000 Service Manual

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TX Buffer Amp
TX Driver Amplifier
TX VCO
Module
RX/TX
VCO
Module
RF Switch Matrix
TX Buffer Amp
TX Driver Amplifier
TX VCO
Module
RX/TX
VCO
Module
RF Switch Matrix
Transmitter Final FET UHF2
Harmonic LP Filter
Loop Filter
Trident IC
Synthesizer

Figure 3-9. Transceiver (UHF2) Block Diagram

Transmitter Final FET 7/800
Harmonic LP Filter
Loop Filter
Synthesizer

Figure 3-10. Transceiver (700/800 MHz) Block Diagram

Basic Theory of Operation: Analog Mode of Operation
SP3T RF Switch
Directional
Coupler
TO RX
Reverse Power Detection
Ref. Oscillator
SP3T RF Switch
Directional
Coupler
TO RX
Trident IC Ref. Oscillator
Log Amp Power Detector
RMT port
Digital RF Attenuator
SP2T RF Switch
GPS
Log Amp Power Detector
RMT port
Digital RF Attenuator
SP2T RF Switch
Reverse Power Detection
GPS
Antenna Connector
Antenna Connector