viii
3.5.1.5
3.5.1.6
3.5.2
UHF Band........................................................................................................................3-49
3.5.2.1
3.5.2.2
3.5.2.3
3.5.2.4
3.5.2.5
3.5.2.6
3.5.2.7
3.5.2.8
3.5.2.9
3.5.2.11 Second Buffer.........................................................................................................3-50
3.5.3
800 MHz Band.................................................................................................................3-50
3.5.3.1
3.5.3.2
3.5.3.3
3.5.3.4
3.5.3.5
3.5.3.6
3.5.3.7
3.5.3.8
3.5.3.9
3.5.3.10 Second Buffer.........................................................................................................3-52
3.5.3.11 K9.4 V Switch .........................................................................................................3-52
3.6
Receiver Front-End ......................................................................................................................3-53
3.6.1
VHF Band........................................................................................................................3-53
3.6.1.1
3.6.1.2
3.6.2
UHF Band........................................................................................................................3-53
3.6.2.1
3.6.2.2
3.6.3
800 MHz Band.................................................................................................................3-54
3.6.3.1
3.6.3.2
3.7
Power Amplifiers ..........................................................................................................................3-55
3.7.1
3.7.1.1
3.7.1.1.1 Transmitter ......................................................................................................3-55
3.7.1.2
3.7.1.3
3.7.1.3.1 Transmitter ......................................................................................................3-63
3.7.2
3.7.2.1
3.7.2.1.1 Transmitter ......................................................................................................3-68
September 5, 2008
RX Buffer Circuitry..................................................................................................3-48
General...................................................................................................................3-49
Super Filter 8.6 V ...................................................................................................3-49
VCO........................................................................................................................3-49
Bandshift Circuit .....................................................................................................3-49
Output Buffer ..........................................................................................................3-49
First Buffer..............................................................................................................3-49
Doubler...................................................................................................................3-50
General...................................................................................................................3-50
Super Filter 8.6 V ...................................................................................................3-50
VCO........................................................................................................................3-50
VCO Buffer .............................................................................................................3-51
First Buffer Circuit...................................................................................................3-51
Doubler...................................................................................................................3-51
General...................................................................................................................3-53
Theory of Operation ...............................................................................................3-53
General...................................................................................................................3-53
Theory of Operation ...............................................................................................3-54
General...................................................................................................................3-54
Theory of Operation ...............................................................................................3-54
High-Power Amplifier..............................................................................................3-55
High-Power Amplifier..............................................................................................3-68
Table of Contents
6881076C25-E