Motorola ASTRO 25 GTR 8000 - Page 8

1.12.2.1 GTR 8000 Base Radio Industry Canada for Integrated Voice and
Data UHF R1 (380–435 MHz)
...........................................................................48
1.12.3 GTR 8000 Base Radio Specifications for Integrated Voice and Data UHF R2
(435–524 MHz) ........................................................................................................... 49
1.12.3.1 GTR 8000 Base Radio Industry Canada for Integrated Voice and
Data UHF R2 (435–524 MHz)...........................................................................52
1.12.4 GTR 8000 Base Radio Specifications for Integrated Voice and Data VHF
(136–174 MHz) ........................................................................................................... 52
1.12.4.1 GTR 8000 Base Radio Industry Canada for Integrated Voice and
Data VHF (136–174 MHz).................................................................................56
1.12.5 GTR 8000 Base Radio Specifications for High Performance Data (700/800
MHz)............................................................................................................................ 56
1.12.5.1 GTR 8000 Base Radio Industry Canada for High Performance Data
(700/800 MHz).................................................................................................. 59
1.12.6 Specifications for GTR 8000 Base Radio Cabinet................................................. 59
Chapter 2: GTR 8000 Base Radio Theory of Operation.........................................61
2.1 Functions of the GTR 8000 Base Radio Modules................................................................. 61
2.1.1 Function of the Transceiver Module.........................................................................61
2.1.1.1 Transceiver Control Board......................................................................... 62
2.1.1.2 Transceiver RF Board ............................................................................... 62
2.1.1.3 Transceiver External Interfaces................................................................. 63
2.1.2 Function of the Power Amplifier Module.................................................................. 64
2.1.2.1 Power Amplifier Input/Output Connections................................................ 65
2.1.3 Function of the Fan Module..................................................................................... 66
2.1.4 Function of the Power Supply.................................................................................. 67
2.1.4.1 AC/DC Power Distribution – Base Radio................................................... 68
2.1.4.2 Power Supply Battery Charger...................................................................68
2.1.4.3 Battery Temperature Sensor Cable........................................................... 69
2.1.4.4 ON/OFF Switch for Power Supply and Battery Charger............................ 69
2.1.4.5 Power Supply Module Backplane Connections......................................... 70
2.2 Backplanes and Card Cages................................................................................................. 70
2.3 RFDS Modules...................................................................................................................... 71
2.3.1 RFDS Preselector (700/800 MHz)........................................................................... 71
2.3.2 RFDS Preselector (UHF)......................................................................................... 71
2.3.3 RFDS Preselector (VHF)......................................................................................... 72
2.3.4 RFDS - Transmit Filter (700/800 MHz).................................................................... 72
2.3.5 RFDS - Duplexer (700/800 MHz).............................................................................73
2.3.6 RFDS - Duplexer (UHF)...........................................................................................73
2.3.7 RFDS - Duplexer (VHF)........................................................................................... 74
2.3.8 RFDS - External Dual Circulator/Isolator Tray (700/800 MHz)................................ 75
2.3.9 RFDS - External Dual Circulator/Isolator Tray (UHF).............................................. 75
MN003286A01-E
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