Operations Manual

ManualsBrandsRF Technology ManualsElectronics25 - 50 MHz Base Station Transceiver

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RF Technology R50 Page 3

CONTENTS CONTENTS

7.1.2 CTCSS 21

7.1.3 Channel Programming 21

7.1.4 Channel Selection 21

7.1.5 Microprocessor 22

7.2 Physical Configuration 22

7.3 Front Panel Controls, Indicators and Test Points 22

7.3.1 Controls 22

7.3.2 Indicators 22

7.3.3 Test Points 22

7.4 Electrical Specifications 23

7.4.1 Power Requirements 23

7.4.2 Frequency Range and Channel Spacing 23

7.4.3 Frequency Synthesizer Step Size 23

7.4.4 Frequency Stability 23

7.4.5 Number of Channels 23

7.4.6 RF Input Impedance 23

7.4.7 IF Frequencies 23

7.4.8 Sensitivity 24

7.4.9 Selectivity 24

7.4.10 Spurious and Image Rejection 24

7.4.11 Intermodulation 24

7.4.12 Modulation Acceptance BW 24

7.4.13 Noise Squelch 24

7.4.14 Carrier Level Squelch 24

7.4.15 Receiver Frequency Spread 24

7.4.16 Receiver Conductive Spurious 25

7.4.17 Audio Frequency Response 25

7.4.18 Audio Output Level 25

7.4.19 Audio Distortion 25

7.4.20 Channel Select Input / Output 25

7.4.21 Carrier Operated Switch Output 26

7.4.22 Current Source/Sink, Collector Voltage 26

7.4.23 CTCSS 26

7.4.24 External Squelch Input 26

7.5 Connectors 26

7.5.1 Antenna Connector 26

7.5.2 Power and I/O Connector 26

7.5.3 Test Connector 27

Appendix A EIA CTCSS Tone Frequencies 28

Appendix C Parts List 29

Appendix C Engineering Diagrams

C.1 Block Diagram

C.2 Circuit Diagrams

C.3 Component Overlay Diagrams