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Ray48
VHF Radio
Owner's Handbook
Document number: 81233-2
Date: February 2004

Summary of Contents

  • Page 1

    Ray48 VHF Radio Owner’s Handbook Document number: 81233-2 Date: February 2004...

  • Page 2

    PRUDENCE AND NAVIGATIONAL JUDGEMENT, AND THIS DEVICE SHOULD NOT BE RELIED UPON AS A SUBSTITUTE FOR SUCH PRUDENCE AND JUDGEMENT. Raymarine products are supported by a network of Authorized Service Representatives. For product information you may contact the following regional center:...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 GENERAL DESCRIPTION INTRODUCTION ... 1 EQUIPMENT FEATURES ... 1 SECTION 2 INSTALLATION UNPACKING AND INSPECTION ... 2 EQUIPMENT SUPPLIED ... 2 2.2.1 Optional Accessories ... 2 PLANNING THE INSTALLATION ... 2 2.3.1 Typical Mounting Methods ... 3 2.3.2 Flush Mounting ...

  • Page 4: Table Of Contents

    SECTION 5 MAINTENANCE GENERAL ... 21 5.1.1 How to contact Raymarine ... 21 SECTION 6 Ray48 MARINE CHANNELS FREQUENCY TABLES Ray48 MARINE CHANNELS AND THEIR USAGE ... 23 SECTION 7 APPENDIX VHF MARINE CHANNEL USAGE GUIDE AND LICENSING REQUIREMENTS ... 27...

  • Page 5

    GLOSSARY OF TERMS VHF ... Very High Frequency 30MHz to 300MHz FM ... Frequency Modulation Carrier Wave ... A Radio Frequency on which intelligence is superimposed. Dual Watch ... Monitor channel 16 while working on another channel. Tri Watch ... Monitor channel 16 and weather channel while working on another All Scan ...

  • Page 6: Introduction, Equipment Features

    The Ray48 is a CPU-controlled, digitally synthesized, compact transceiver which provides reliable simplex and half-duplex (two-frequency) communications between ships and from ships at sea to public or private shore stations. The Ray48 provides two-way communications on the International and US channels, reception on 10 separate weather channels, and two-way communications on the International calling and safety channel (16).

  • Page 7: Unpacking And Inspection, Equipment Supplied, Optional Accessories, Planning The Installation

    Flush Mount Kit 2.3 PLANNING THE INSTALLATION When planning the installation for your Ray48, the following conditions should be considered to insure dependable and trouble-free operation. • The mounting location should be easily accessible to allow operation of the front panel.

  • Page 8: Typical Mounting Methods, Flush Mounting

    2.3.1 Typical Mounting Methods The Ray48 can be conveniently mounted on a chart table, bulkhead, overhead, or any other desired location (refer to Figure 2-1 for typical mounting methods). Make sure there are no hidden electrical wires or other items behind the desired location before proceeding.

  • Page 9

    120(4.72) Fig.2-2 OUTLINE AND MOUNTING DIMENSIONS All dimensions are shown in (inches) and millimeters...

  • Page 10: Electrical Connections, Dc Power And External Speaker Connections

    6 feet long and plugs into the 4 pin connector cable at the rear panel of the radio. The RED (+) wire with an in-line fuse (10 amps) and the BLACK (-) wire of the 4 pin connector cable are used for connecting the Ray48 to the ship's 12 VDC power system. (Refer to Fig. 2-4) Fig.2-4 POWER/EXTERNAL SPEAKER CABLE AND...

  • Page 11: External Speaker Connections

    2.4.2 External Speaker Connections The YELLOW (+) wire and GREEN (-) wire are used for connecting the Ray48 to an external speaker (Refer to Fig.2-4). Three watts of audio output power is provided for an external 4 ohm speaker.

  • Page 12: Antenna Connections, Antenna Mounting Suggestions, Grounding

    The Ray48 can be connected to ground by attaching a wire to one of the screws on the unit's rear panel and then to the nearest ship's ground connection point.

  • Page 13: Controls And Lcd Display, Introduction

    3.1 INTRODUCTION Your Ray48 has the capability to transmit and receive on all available US and International Marine VHF radiotelephone channels. There are channels that are FCC approved but may only be used by authorized stations for specific purposes, depending on the type of vessel (commercial or noncommercial).

  • Page 14: Controls

    3.2.1 Controls VOLUME Control (On/Off) Turns the radio On and Off and controls the Volume of the audio output to the speaker. 2 [▲] [▼] Keys The Up and Down keys are used to move the channel numbers up or down. The channel number can be increased or decreased by one with each key press, or will continue to increase or decrease the number as the key is held.

  • Page 15: Lcd Display

    3.2.2 LCD Display The following describes the functional characters on the Ray48's LCD. Fig.3-2 LCD DISPLAY SCAN: Will flash by itself when All-Scan mode is to be initiated or will flash in unison with "MEM" when Memory Scan mode is to be initiated.

  • Page 16: Operating Procedures, Turning The Power On

    CH 16 or a user selected priority channel (16 PLUS). As a safety feature, the Ray48 is designed to inhibit transmission if the Push-to-Talk switch is pressed continuously for over five minutes. If this occurs, audible beeps will sound and "TO"...

  • Page 17: The 16 Plus (priority) Channel, Channel Memory, Scan Modes

    "beep" is heard and "MEM" disappears from the LCD. 3.3.4 Scan Modes The Ray48 is equipped with two types of scan options, All-Scan and Memory Scan. How these options are accessed is dependent upon whether there are any channels stored in memory.

  • Page 18: Master Reset, Monitor Mode

    Memory Scan Mode If one or more channels are stored in memory, when the SCAN key is pressed, "SCAN" and "MEM" will begin to flash simultaneously on the LCD. If no other key is pressed, the radio will begin scanning all channels currently in memory in three seconds.

  • Page 19: General, The Control Section, The Transmitter/receiver/pll Sections, Pll (phase Lock Loop) Circuit

    TECHNICAL DESCRIPTION 4.1 GENERAL The Ray48 can be considered as consisting of two major sections. They are: • The Control Circuitry (considering of the front panel controls, the LCD display, control CPU) • The Transmitter/Receiver/PLL circuits 4.2 THE CONTROL SECTION The heart of the control section is the CPU IC201, located on the Front PCB.

  • Page 20: Transmitter Circuit, Receiver Circuit

    4.3.2 Transmitter Circuit A signal from the microphone is fed to a pre-emphasis operations amplifier IC3, and modulates VCO (Q4) through active LPF IC2. The VCO output signal from Q4 is sent to the RF power amplifiers IC1, Q1 and Q2 through buffer amplifier Q3.

  • Page 21: Specifications, Transmitter, Receiver

    4.4 SPECIFICATIONS 4.4.1 Transmitter Channels Frequency Stability Frequency Range Channel Spacing Power Output modulation Modulation Audio Response FM Hum & Noise Level Audio distortion Spurious & harmonic Emissions Antenna Impedance Transmitter Protection 4.4.2 Receiver Channels Frequency Range Frequency Stability Usable Sensitivity Squelch Sensitivity Threshold Adjacent Chl Rejection Spurious Image Rejection...

  • Page 22: Operating Requirement, Radio Dimensions

    4.4.3 Operating Requirement Input Voltage Current Required Transmit Operating Temperature Duty Cycle Humidity 4.4.4 Radio Dimensions Height Width Depth Weight 13.6 Vdc ±15% (11.6 to 15.6 Vdc) Less than 5.8 amp at 25 Watts Less than 1.5 amp at 1 Watt -20°C to +50°C Continuous, 80% receive, 20% transmit (max 10 min.

  • Page 23: Block Diagram

    4.5 BLOCK DIAGRAM IC201 M34520 M6 21.145MHz...

  • Page 25: Ray48 Assembly Drawing

    4.6 Ray48 ASSEMBLY DRAWING 1. FRONT PANEL ASSEMBLY 2. MID COVER ASSEMBLY 3. REAR COVER 4. FRONT GASKET 5. REAR GASKET 6. FRONT PCB ASSEMBLY 7. MAIN PCB ASSEMBLY 8. KNOB SQUELCH 9. KNOB POWER/VOLUME 10. POWER/VOLUME/SQUELCH POT NUT 11. O-RING (m6) 12.

  • Page 27: How To Contact Raymarine, General

    Accessories and Parts: 1-800-539-5539 ext. 2333 or 603-881-5200 ext. 2333 Many Raymarine accessory items and parts are available through your authorized Raymarine dealer. However if you are in need of an item not available through your retailer feel free to contact our Customer Service department Monday to Friday 8:15 AM to 5:00 PM Eastern Standard Time.

  • Page 28

    On the Internet Visit the Raymarine World Wide Web site for the latest information on Raymarine electronic equipment and systems at: www.raymarine.com Navigate to the Customer Support Page, which provides links for: • Finding Factory Service locations and Authorized Dealers near you •...

  • Page 29: Ray48 Marine Channels And Their Usage

    Ray48 MARINE CHANNELS FREQUENCY TABLES 6.1 Ray48 MARINE CHANNELS AND THEIR USAGE The transmitter of the Ray48 is disabled when channel 15, 75, 76 or WX0-WX9 is displayed. U.S. VHF Marine Radio Channels and Frequencies Frequency XMIT Single 156.050 156.100 156.150...

  • Page 30

    Frequency XMIT Single 156.325 156.325 156.375 156.375 156.425 156.425 156.475 156.475 156.525 156.525 156.575 156.575 156.625 156.625 156.675 156.675 156.725 156.725 156.775 156.825 156.875 156.875 156.925 156.925 156.975 156.975 157.025 157.025 157.075 157.075 157.125 157.125 157.175 157.175 157.225 161.825 157.275 161.875 157.325 161.925...

  • Page 31

    U.S. NOAA Weather Radio Frequencies Frequency Weather in MHz Channel 163.275 162.550 162.400 162.475 162.425 162.450 162.500 162.525 161.650 161.775 International VHF Marine Radio Channels & Frequencies Frequency XMIT Single 156.050 160.650 156.100 160.700 156.150 160.750 156.200 160.800 156.250 160.850 156.300 156.300 156.350...

  • Page 32

    Frequency XMIT Single 156.525 156.575 156.575 156.625 156.625 156.675 156.675 156.725 156.725 156.775 156.825 156.875 156.875 156.925 161.525 156.975 161.575 157.025 161.625 157.075 161.675 157.125 161.725 157.175 161.775 157.225 161.825 157.275 161.875 157.325 161.925 157.375 161.975 157.425 162.025 Table 6-1 (Continued) Intership channels are for communications between ship stations.

  • Page 33: Vhf Marine Channel Usage Guide And Licensing Requirements

    7.1 VHF MARINE CHANNEL USAGE GUIDE AND LICENSING REQUIREMENTS Marine VHF radio users in the US must comply with all applicable FCC rules and regulations, some of which are described here. This information was current at the time this book was printed. Up-to-date information, including licensing requirements, can be obtained on the FCC website at: www.fcc.gov/wtb/marine.

  • Page 34

    All transceivers, hand-helds included, operated in the Maritime Radio Services are required to be operated under an appropriate maritime station license. Operation of hand held VHF Marine transceivers without proper station license can lead to fines and/or administrative sanctions issued against its user and/or owner. VHF Marine hand held transceivers can be operated and licensed as follows: Associated Ship Unit: A hand held VHF Marine transceiver can be operated under an existing valid ship station license under the following conditions only:...

  • Page 35

    USAGE GUIDE Emergency Calling Monitoring Intership Safety U.S. Coast Guard Navigation Port Operation Noncommercial Commercial Marine Operator State Control Environmental Weather...

  • Page 36

    Emergency Channel 16 • Your ship is sinking, or on fire • Someone has been lost overboard • There exists grave and imminent danger Use this distress procedure: • Select Channel 16 • Say "Mayday, Mayday, Mayday." • Give call sign and boat name •...

  • Page 37

    Monitoring Channel 16 & Working Channel When - your VHF station is turned on and it is not being used to exchange communications You Must - monitor channel 16 As an operating convenience, many stations employ a second receiver so that they can monitor a working channel and channel 16 simultaneously.

  • Page 38

    U.S. Coast Guard Channel: Vessels: Use: Working channel for exchange of communica- tions with stations of the U.S. Coast Guard. Between: Ship to U.S. Coast Guard ship, coast to aircraft stations Comments: U.S. Coast Guard does not regularly monitor this channel.

  • Page 39

    Port Operations Channels: 5, 12, 14, 20, 65, 66, 73, 74 [77] Vessels: Use: Messages relating to the operational handling, movement and safety of vessels in or near ports, locks and waterways. Between: Ship-to ship or ship-to- coast Comments: Channel 77 is limited to communications to and from commercial pilots concerning the movement...

  • Page 40

    Commercial Channels: 7, 8, 9, 10, 11, 18, 19, 67, 79, 80, [88] Vessels: Those used primarily for commercial transport of persons or goods, or engaged in servicing other vessels Use: Communications pertaining to the purpose for which the vessel is used Between: Commercial transport...

  • Page 41

    State Control Channel: Vessels: State and local govern- ment Use: Coordination, regulation and control of boating activities and the rendering of assistance to vessels. Between: Ship and coast stations associated with state and local governments. Weather Channels: WX1, WX2, WX3 Vessels: Any Use: Continuous weather informa-...

  • Page 42

    PHONETIC ALPHABET: To help make call letters more clearly understood, and to assist in spelling out similar sounding or unfamiliar words, radiotelephone users employ the international phonetic alphabet. Phonetic Alphabet: ALPHA BRAVO CHARLIE DELTA ECHO FOX-TROT GOLF HOTEL INDIA JULIET KILO LIMA MIKE...

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