Entel HT644 GMDSS User Manual
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Entel HT644 GMDSS User Manual

Professional submersible marine handheld transceivers
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HT644 GMDSS User Guide
v06/11
Professional submersible marine handheld transceivers
HT644 GMDSS
LCD

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Summary of Contents for Entel HT644 GMDSS

  • Page 1 HT644 GMDSS User Guide v06/11 Professional submersible marine handheld transceivers HT644 GMDSS...

  • Page 2: Table Of Contents

    Page Certification Introduction Packing List Radio Care Preparing Your Radio For Use Battery Care / Information 5, 6 & 7 Using Your HT644 GMDSS Reception Transmitting Channels 9 & 10 Functions The Scan Function VOX (Voice Operate Transmit) LCD Indicators Optional Accessories 13 &...

  • Page 3: Declaration Of Conformity

    WD6 3TJ United Kingdom HT644 GMDSS Series Handheld Radio Transceiver Hereby declare under our sole responsiibility that the HT644 GMDSS handheld transciever meets all IMO and SOLAS requirements for survival craft two-way VHF transceivers. EN 300 225 December 2004 V1.4.1.

  • Page 4: Introduction

    Introduction The Entel HT644 GMDSS is a professional marine handheld transceiver that operates on the VHF marine band. The HT644 GMDSS has 58 marine international channels, 10 weather & 36 dealer programmable private channels.The 58 marine channels are switchable to comply with USA, International or Canadian regulations.

  • Page 5: Preparing Your Radio For Use

    Preparing Your Radio For Use Attaching / Removing Audio Accessories To attach, remove the accessory cover by unscrewing the locking screw anti-clockwise (leave cover secured under antenna as this provides a waterproof seal). Attach accessory plug by locating over the socket. Carefully tighten the locking screw clockwise until finger tight (do not tighten with a screwdriver etc).

  • Page 6: Battery Care / Information 5, 6

    Battery Care / Information Introduction Note: only genuine Entel batteries should be used. Customer satisfaction is assured as you can not Your Entel radio is supplied with a high be supplied with sub standard, potentially performance battery. These batteries: dangerous battery packs from 3rd party •...
  • Page 7 • 1 Segment: 20 mins immediately: • Wash your eyes out with fresh water & Note: Only genuine Entel batteries should be avoiding rubbing them used. Customer satisfaction is assured as you • Seek medical treatment can not be supplied with sub standard,...
  • Page 8 Battery Care / Information Attaching / Removing the Battery Pack To attach, locate the pegs on the bottom of the battery into the slots on the radio and press the top of the battery against the radio. Secure battery by tightening the screw clockwise by hand.

  • Page 9: Using Your Ht644 Gmdss

    Using Your HT644 GMDSS Turning The Radio On & Off Turn the ON/OFF control on the top of the radio clockwise until the LCD iluminates & a short beep is emitted. To turn the radio off turn the ON/OFF control anti-clock wise until the LCD deluminates.

  • Page 10: Channels

    Channels INT, USA & Canadian Modes In compliance with worldwide license regulations the following versions of HT644 GMDSS is available: Version A: INT, USA & Canadian modes Version B, C & D: INT mode only 1. In the case of version A only; to change the channel set of the transceiver, hold down the [WX] key.The mode changes from USA to Canadian to International.

  • Page 11: Channels

    Channels Simplex / Duplex Channel Use Your transceiver has been factory programmed in accordance with FCC (USA), Industry Canada and International regulations.The mode of operation cannot be altered from simplex to duplex or vice versa. Simplex or duplex mode is automatically activated, depending on the channel and the channel set and whether USA, Canadian, or International mode is selected.

  • Page 12: Functions

    Functions The Scan Function 1. Select the desired channel to be scanned using the & buttons. 2. Press the [MEM] button to store the channel in the transceiver’s memory. [MEM] is displayed on the LCD.This channel is now memorised to be scanned. 3.

  • Page 13: Lcd Indicators

    LCD Indicators Indicator Description High power selected (5 Watts) Low power (1 Watt). The Radio is Transmitting. The Radio is Recieving. Indicated channel is memorised for scanning. Scrambler mode enabled (version A & B only). Voice operated transmit mode enabled. Indicates the channel set for USA.

  • Page 14: Optional Accessories 13

    Optional Accessories Attaching & Removing Accessories To attach an accessory: Remove the accessory cover by unscrewing the locking screw anti-clockwise (leave cover attached or store in a safe place). Attach accessory plug to the socket. Carefully tighten the locking screw clockwise until finger tight (do not tighten with a screwdriver etc).

  • Page 15: Standard Features

    CBH750 Spare spring loaded belt clip * VOX = Voice Operated Transmit (hands free operation) For complete up to date list of optional accessories visit www.entel.co.uk Standard Features Standard Features: Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes.

  • Page 16: Controls 15

    Controls Power & Volume Control: Powers the radio on and off and controls the volume. The Microphone: Internal condenser microphone Up / Down Buttons: Press up / down buttons to change channel. 16/9 Button: A momentary press of the button selects channel 16 and a longer press select channel 9.
  • Page 17 13 H/L Button: Press and hold this button for 1 second to toggle between high and low power (1 & 5 Watts). 14 The Accessory Connector: Used to attach any HT644 GMDSS approved accessory. 15 LED Indicator: Indicates the status of the radio: •...

  • Page 18: Glossary Of Terms

    Glossary of Terms Term Description Canadian Channels designated as defined and regulated by Industry Canada, (RIC), Channels Marine Communications & Traffic Services. Duplex Transmit and receive on different frequencies. Encryption Scrambled audio for extra privacy. Frequency Modulation. International Channel designations as defined for use in international waters by the Channels International Telecommunications Union (ITU).

  • Page 19: Troubleshooting

    Troubleshooting SYMPTOM PROBABLE CAUSE REMEDY Battery needs charging or Charge the battery pack Transceiver not switching on battery is exhausted replace the battery pack Use the MEM key to enter desired channels into scan The scan key does not start No channels memorised memory.Adjust the squelch to the scan...

  • Page 20: Channel Chart 19

    Channel Chart Frequency Channel Set Channel Use Receive Transmit USA CAN 156.05000 PORT OPERATION AND COMMERCIAL 156.05000 PUBLIC, PORT OPERATIONS 160.65000 160.70000 156.10000 PUBLIC, PORT OPERATIONS US GOVERMENT, COAST GUARD 156.15000 160.75000 156.15000 PUBLIC, PORT OPERATIONS 156.20000 COMMERCIAL FISHING 156.20000 PUBLIC, PORT OPERATIONS 160.80000 156.25000 PORT OPERATIONS,VTS IN SEATTLE...
  • Page 21 Channel Chart Channel Set Frequency Channel Use Receive Transmit USA CAN 157.10000 157.10000 PORT OPERATION, SHIP MOVEMENT 161.70000 157.15000 U.S. GOVERNMENT ONLY 157.15000 PUBLIC CORRESPONDENCE 161.75000 161.80000 157.20000 PUBLIC CORRESPONDENCE 157.25000 PUBLIC CORRESPONDENCE 161.85000 161.90000 157.30000 PUBLIC CORRESPONDENCE 157.35000 PUBLIC CORRESPONDENCE 161.95000 162.00000 157.40000 PUBLIC CORRESPONDENCE...
  • Page 22 Channel Chart Frequency Channel Set Channel Use Receive Transmit USA CAN INT 156.72500 PORT OPERATIONS PORT \ GUARD CHANNELS 156.77500 PORT \ GUARD CHANNELS 156.82500 156.87500 PORT OPERATIONS 156.87500 PORT OPERATIONS \ INTERSHIP 156.92500 NON-COMMERCIAL 161.52500 156.92500 PUBLIC \ PORT OPERATIONS COMMERCIAL 156.97500 156.97500 PORT OPERATION, SHIP MOVEMENT...

  • Page 23: Technical Specifications 22

    Technical Specifications GENERAL 156 - 163.275MHz Frequency Range 25 kHz Channel Spacing Simplex Communication Method High Efficiency Helical Antenna 50 ohm Antenna Impedance 7.4 V DC Power Supply Voltage 8 Hours Battery Life Standby 40mA; RX: 390 mA; 1.0 W audio output (1kHz) Current Drain (nominal) TX: 0.7 A at 1W.
  • Page 24 Technical Specifications TRANSMITTER 156.025 - 157.425 Frequency Range Power Output Selectable: High = 5W, Low = 1W Modulation 16K0G3E Oscillator Method Frequency Stability ±2PPM Maximum Deviation ±5 kHz Audio Distortion < 5% (1 kHz 60%) Spurious Emissiong -55db Hum & Noise -40 [dB] RECEIVER 156 - 163.275MHz...

  • Page 25: Notes 24

    Notes Use this page to record important information, such as the serial number of your radio and any private channels programmed by your dealer etc.
  • Page 26 Notes...
  • Page 27 ‘the profession l’s choice’ <Intended Country Of Use> Registered Community Design Application 000810890 U.S. Design Patent Pending No. 23/182,829 Copyright and Unregistered Design Right Entel UK 2009 All rights reserved Headquarters: United Kingdom www.entel.co.uk...

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