Figure 3-17. Transmitter Block Diagram (Uhf1 / Vhf); Figure 3-18. Transmitter Block Diagram (Uhf1 / Uhf2) - Motorola APX 7000 Detailed Service Manual

3-16
TX Buffer Amp
RF Switch Matrix
TX Buffer Amp
RF Switch Matrix
RF Switch
Driver Amplifier
Loop Filter
VCO Module
VCO Module
VCO Module

Figure 3-17. Transmitter Block Diagram (UHF1 / VHF)

RF Switch
Driver Amplifier
Loop Filter
VCO Module
VCO Module

Figure 3-18. Transmitter Block Diagram (UHF1 / UHF2)

Switch
FET VHF
Harmonic Filters
FET UHF1
To RX
Trident IC
Ref. Oscillator
TX SSI from Vocon
Switch
FET UHF1
Harmonic Filters
FET UHF2
To RX
Trident IC
Ref. Oscillator
TX SSI from Vocon
Theory of Operation: Transceiver Board
Log amp Power Detector
Digital RF Attenuator
SP2T RF Switch
Coupler
SP3T RF Switch
Rev Power Detection
Log amp Power Detector
Digital RF Attenuator
SP2T RF Switch
Coupler
SP3T RF Switch
Rev Power Detection
To Antenna
To RMT Port
To Antenna
To RMT Port