List of Figures xi
Figure 10-25. Switches and Battery (MDC1200 and QCII) Schematic Diagram ............................... 10-33
Figure 10-26. Transmitter Audio Filter and Sub-tone (MDC1200 and QCII) Schematic Diagram ..... 10-34
Figure 10-27. Receiver Audio Filter and Sub-tone (MDC1200 and QCII) Schematic Diagram ......... 10-35
Figure 10-28. VHF (136–174 MHz) Mainboard Top Side: E11-000948-00 ........................................ 10-36
Figure 10-29. VHF (136–174 MHz) Mainboard Bottom Side: E11-000948-00 ................................... 10-37
Figure 10-30. VHF (136–174 MHz) Mainboard Top Side: E11-001007-00 ........................................ 10-38
Figure 10-31. VHF (136–174 MHz) Mainboard Bottom Side: PCB No. E11-001007-00 .................... 10-39
Figure 10-32. VHF (136–174 MHz) Sub Circuit Board Top View: PCB No. E11-000002-02 ............. 10-40
Figure 10-33. VHF (136–174 MHz) Sub Circuit Board Bottom View: PCB No. E11-000002-02 ........ 10-41
Figure 10-34. VHF (136–174 MHz) Keypad Board: PCB No. E11-000886-00................................... 10-42
Figure 10-35. MDC/QCII R&TTE (136–174 MHz) Receiver Schematic Diagram
(Part No: E11-001007-00) ......................................................................................................... 10-53
Figure 10-36. MDC/QCII R&TTE VCO and PLL Schematic Diagram ................................................ 10-54
Figure 10-37. (MDC/QCII R&TTE) Transmitter Schematic Diagram .................................................. 10-55
Figure 10-38. MDC/QCII R&TTE Microprocessor and Keypad Schematic Diagram.......................... 10-56
Figure 10-39. MDC/QCII R&TTE Audio Power Amplifier and External Audio Schematic Diagram.... 10-57
Figure 10-40. MDC/QCII R&TTE Switches and Battery Schematic Diagram..................................... 10-58
Figure 10-41. MDC/QCII R&TTE Transmitter Audio Filter and Sub-tone Schematic Diagram........... 10-59
Figure 10-42. MDC/QCII R&TTE Receiver Audio Filter and Sub-tone Schematic Diagram............... 10-60
Figure 10-43. VHF MDC/QCII R&TTE (136–174 MHz) Mainboard Top Side:
PCB No. E11-001007-00 ........................................................................................................... 10-61
Figure 10-44. VHF MDC/QCII R&TTE (136–174 MHz) Mainboard BottomSide:
PCB No. E11-001007-00 ........................................................................................................... 10-62
Figure 10-45. VHF (136–174 MHz) Sub Circuit Board Top View: PCB No. E11-000002-02 ............. 10-63
Figure 10-46. VHF (136–174 MHz) Sub Circuit Board Bottom View: PCB No. E11-000002-02 ........ 10-64
Figure 10-47. VHF (136–174 MHz) Keypad Board: PCB No. E11-000886-00................................... 10-65
Figure 11-1. UHF1 Receiver Block Diagram ...................................................................................... 11-1
Figure 11-2. UHF1 Transmitter Block Diagram .................................................................................. 11-3
Figure 11-3. UHF1 Frequency Generation Unit Block Diagram ......................................................... 11-4
Figure 11-4. Keypad Block Diagram................................................................................................... 11-6
Figure 13-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence ........................................ 13-3
Figure 13-2. Speaker and Microphone Schematic ............................................................................. 13-3
Figure 13-3. UHF1 (403–447 MHz) Receiver Schematic Diagram(Part No: E11-0763-0) ................. 13-5
Figure 13-4. UHF1 (403–447 MHz) Receiver Schematic Diagram(Part No: E11-000996-00) ........... 13-6
Figure 13-5. Transmitter Schematic Diagram..................................................................................... 13-7
Figure 13-6. Microprocessor and Keypad Schematic Diagram .......................................................... 13-8
Figure 13-7. Audio Power Amplifier and External Audio Schematic Diagram .................................... 13-9
Figure 13-8. Switches and Battery Schematic Diagram ................................................................... 13-10
Figure 13-9. Transmitter Audio Filter and Sub-tone Schematic Diagram ......................................... 13-11
Figure 13-10. UHF1 (403–447 MHz) Mainboard Top Side: PCB No. E11-0763-0 ............................. 13-12
Figure 13-11. UHF1 (403–447 MHz) Mainboard Bottom Side: PCB No. E11-0763-0 ....................... 13-13
Figure 13-12. UHF1 (403–447 MHz) Mainboard Top Side: PCB No. E11-000996-00 ....................... 13-14
Figure 13-13. UHF1 (403–447 MHz) Mainboard Bottom Side: PCB No. E11-000996-00.................. 13-15
Figure 13-14. UHF1 (403–447 MHz) Sub Circuit Board Top View: PCB No. E11-000002-02 ........... 13-16
Figure 13-15. UHF1 (403–447 MHz) Sub Circuit Board Bottom View: PCB No. E11-000002-02 ...... 13-17
Figure 13-16. UHF1 (403–447 MHz) Keypad Board: PCB No. E11-000886-00 ................................ 13-18
Figure 13-17. UHF1 (403–447 MHz, MDC1200 and QCII) Receiver Schematic Diagram
(Part No:E11-000946-00) .......................................................................................................... 13-29
Figure 13-18. UHF1 (403–447 MHz, MDC1200 and QCII) Receiver Schematic Diagram
(Part No:E11-001016-00) .......................................................................................................... 13-30
Figure 13-19. Transmitter (MDC1200 and QCII) Schematic Diagram................................................ 13-31
Figure 13-20. Microprocessor and Keypad (MDC1200 and QCII) Schematic Diagram ..................... 13-32
Figure 13-21. Audio Power Amplifier and External Audio (MDC1200 and QCII) Schematic Diagram13-33
Figure 13-22. Switches and Battery (MDC1200 and QCII) Schematic Diagram ................................ 13-34