Entel HT644 User Manual
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Entel HT644 User Manual

Professional submersible marine handheld transceivers
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H T 644 U ser Guide
v07/11
Professional submersible marine handheld transceivers
HT644
LCD

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Summary of Contents for Entel HT644

  • Page 1 H T 644 U ser Guide v07/11 Professional submersible marine handheld transceivers HT644...
  • Page 2 Table of Cont ent s...
  • Page 3 Int roduct ion Declar at ion of Confor m it y We Entel UK Limited of: 320 Centennial Avenue Centennial Park Elstree Borehamwood Hertfordshire W D6 3TJ United Kingdom Declares under our sole responsibility that the product range: H T 644 Ser ies H andheld Radio Tr ansceiver Conforms to the following standards or other nominative docum ents: EN 301 178 -2 V1.2.2: 2007-02, EN 60945:2002, EN6095 0-1: 2006, in accordance with...
  • Page 4 16/9 button. Weather channels can also be accessed immediately using the [WX] key. The HT644 includes the following features: S can, A/B quick access channels, battery life indicator, VOX (voice activated transmit), low battery indicator, large LCD with back light.

  • Page 5: Preparing Your Radio For Use

    Prepar ing Your Radio For U se A t t aching / Rem oving A udio A ccessor ies 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.

  • Page 6: Bat T Er Y Care / Infor M At Ion

    Bat t er y Care / Infor m at ion Int roduct ion Bat t er y Pack Pr ecaut ions Y our Entel radio is supplied with a high • Switch the transceiver OFF before performance Lithium-Ion (Li-Ion) battery. These...
  • Page 7 • 1 S egment: 20 mins pod, either with or without the transceiver attached. The LED status light N ot e: Only genuine Entel batteries should be changes from green to RED & trickle used. Customer satisfaction is assured as you charge begins...

  • Page 8: Using Your H T 644

    Using Your H T 644 Tur ning T he Radio On & O ff 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 9: In T, Usa & Canadian Modes

    Channels IN T, USA & Canadian Modes In com pliance wit h wor ldwide license regulat ions t he following ver sions of H T 644 are available: Ver sion A : IN T, U SA & Canadian m odes Ver sion B, C &...

  • Page 10: Simplex/Duplex Channel Use

    Channels SIMPLEX / DUPLEX CH A N N EL USE Your transceiver has been factory programmed in accordance with FCC (US A), Industry Canada and International regulations. The mode of operation cannot be altered from simplex to duplex or vice versa. S implex or duplex mode is automatically activated, depending on the channel and the channel set and whether US A, Canadian, or International mode is selected.

  • Page 11: T He Scan Funct Ion

    Funct ions T he Scan Funct ion 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 12 LCD Indicat or s Indicat or Descr ipt ion 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.

  • Page 13: Optional Accessories

    Opt ional A ccessor ies A t t aching & Rem oving A ccessor ies To at t ach an accessor y: 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.

  • Page 14: Standard Features

    Opt ional A ccessor ies For complete up to date list of optional accessories visit www.entel.co.uk St andar d Feat ures St andar d Feat ur es: Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes.
  • Page 15 Cont rols Power & Volum e Cont rol: Powers the radio on and off and controls the volume. T he Microphone: Internal condenser microphone U p / Down But t ons: Press up / down buttons to change channel. 16/9 But t on: A momentary press of the button selects channel 16 and a longer press select channel 9.
  • Page 16 13 H /L But t on: Press and hold this button for 1 second to toggle between high and low power (1 & 5 Watts). 14 T he A ccessor y Connect or : Used to attach any HT644 approved accessory. 15 LED Indicat or : Indicates the status of the radio: •...
  • Page 17 Glossar y of Ter m s Ter m Descr ipt ion Canadian Channels designated as defined and regulated by Industry Canada, (RIC), Channels Marine Communications & Traffic Services. Duplex Transmit and receive on different frequencies. Encr ypt ion S crambled audio for extra privacy. Frequency Modulation.

  • Page 18: Troubleshooting

    Troubleshoot ing SYMPTO M PROBA BLE CAU SE 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.
  • Page 19 Channel Char t Fr equency Channel Set Channel U se Receive Tr ansm it U SA CA N IN T 156.05000 POR T OPERATION AND COMMERCIAL 156.05000 PUBLIC, POR T OPERATIONS 160.65000 160.70000 156.10000 PUBLIC, POR T OPERATIONS 156.15000 US GOVERMENT, COAS T GUARD 160.75000 156.15000 PUBLIC, POR T OPERATIONS 156.20000...
  • Page 20 Channel Char t Channel Set Frequency Channel U se Receive Tr ansm it U SA CAN IN T 157.10000 161.70000 157.10000 POR T OPERATION, S HIP MOVEMENT 157.15000 U.S . GOVERNMENT ONLY 161.75000 157.15000 PUBLIC CORRES PONDENCE 161.80000 157.20000 PUBLIC CORRES PONDENCE 157.25000 PUBLIC CORRES PONDENCE 161.85000 157.30000 PUBLIC CORRES PONDENCE...
  • Page 21 Channel Char t Fr equency Channel Set Channel U se Receive Tr ansm it U SA CA N IN T 156.72500 POR T OPERATIONS 156.77500 POR T \ GUARD CHANNELS 156.82500 POR T \ GUARD CHANNELS 156.87500 POR T OPERATIONS POR T OPERATIONS \ INTERS HIP 156.87500 156.92500...

  • Page 22: Technical Specifications

    Technical Specificat ions GEN ERA L 156 - 163.275MHz Fr equency Range 25 kHz Channel Spacing S implex Com m unicat ion Met hod High Efficiency Helical A nt enna 50 ohm A nt enna Im pedance 7.4 V DC Power Supply Volt age 8 Hours Bat t er y Life...
  • Page 23 Technical Specificat ions T RA N SMIT T ER 156.025 - 157.425 Frequency Range Power Out put S electable: HIGH = 5W, LOW = 1W Modulat ion 16K0G3E Oscillat or Met hod Fr equency St abilit y ±2PPM Maxim um Deviat ion ±5 kHz A udio Dist or t ion <...
  • Page 24 N ot es 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 25 N ot es...
  • Page 26 ‘the professional’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.ent el.co.uk...

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