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SECTION 4 TECHNICAL DESCRIPTION
4.1 GENERAL ............................................................................................................................................. 14
4.2 THE CONTROL SECTION .................................................................................................................. 14
4.3 THE TRANSMITTER/RECEIVER/PLL SECTIONS .......................................................................... 14
4.3.1 PLL (Phase Lock Loop) Circuit..................................................................................................... 14
4.3.2 Transmitter Circuit......................................................................................................................... 15
4.3.3 Receiver Circuit ............................................................................................................................. 15
4.4 SPECIFICATIONS ................................................................................................................................ 16
4.4.1 Transmitter ..................................................................................................................................... 16
4.4.2 Receiver ......................................................................................................................................... 16
4.4.3 Operating Requirement.................................................................................................................. 17
4.4.4 Radio Dimensions.......................................................................................................................... 17
4.5 BLOCK DIAGRAM .............................................................................................................................. 18
4.6 Ray48 ASSEMBLY DRAWING ............................................................................................................ 19
SECTION 5 MAINTENANCE
5.1 GENERAL ...........................................................................................................................21
5.1.1 How to contact Raymarine ...........................................................................................21
SECTION 6 Ray48 MARINE CHANNELS FREQUENCY TABLES
6.1 Ray48 MARINE CHANNELS AND THEIR USAGE .......................................................................... 23
SECTION 7 APPENDIX
7.1 VHF MARINE CHANNEL USAGE GUIDE
AND LICENSING REQUIREMENTS ................................................................................................. 27