Chapter 3
UHF1 PCB/SCHEMATICS/PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards
1.1 UHF1 (403-440MHz)
The UHF1 circuits are contained on the printed circuit board (PCB) which also contains the
Controller circuits. This Chapter shows the schematics for the UHF circuits, the Controller circuits
are contained in Section 2 of this manual. The PCB component layouts and the Parts Lists in this
Chapter show both the Controller and UHF circuit components. The UHF schematics and the
related PCB and parts list are shown in the table below.
Table 3-2 UHF1 Diagrams and Parts Lists
Table 3-1 UHF1 Diagrams and Parts Lists
PCB :
8486635Z03-O Main Board Top Side
8486635Z03-O Main Board Bottom Side
Page 3-3
Page 3-4
SCHEMATICS
Radio Circuit Block Diagram
Receiver Front End
Receiver Back End
Synthesiser
VCO
Transmit and Power Control Cct
Controller Interconnect Schematic Diagram
Microprocessor Circuitry Scehmatic Diagram
Audio Circuitry Schematic Diagram
DC Regulation Schematic Diagram
Page 3-5
Page 3-6
Page 3-7
Page 3-8
Page 3-9
Page 3-10
Page 3-11
Page 3-12
Page 3-13
Page 3-14
Parts List
8486635Z03-O Page 3-15
PCB :
8416205H02-C/-D Main Board Top Side (EPP)
8416205H02-C/-D Main Board Bottom Side (EPP)
Page 3-19
Page 3-20
SCHEMATICS
Radio Circuit Block Diagram
Receiver Front End
Receiver Back End
Synthesiser
VCO
Transmit and Power Control Cct
Controller Interconnect Schematic Diagram
Microprocessor Circuitry Scehmatic Diagram
Audio Circuitry Schematic Diagram
DC Regulation Schematic Diagram
Page 3-21
Page 3-22
Page 3-23
Page 3-24
Page 3-25
Page 3-26
Page 3-27
Page 3-28
Page 3-29
Page 3-30
Parts List
8416205H02-C/-D Page 3-31