Entel HT844 User Manual
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Entel HT844 User Manual

Professional submersible marine handheld transceivers
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HT844 / HT944 User Guide
Professional submersible marine handheld transceivers
ATEX approved Intrinsically Safe
II 2 G Ex ib IIA T4 Gb
II 2 G Ex ib IIC T4 Gb
Ex ib IIA T4 Gb
Ex ib IIC T4 Gb
Common Information
(all models)
HT844
HT944
v07/10
LCD
LCD

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Summary of Contents for Entel HT844

  • Page 1 HT844 / HT944 User Guide v07/10 Professional submersible marine handheld transceivers ATEX approved Intrinsically Safe Common Information (all models) II 2 G Ex ib IIA T4 Gb II 2 G Ex ib IIC T4 Gb Ex ib IIA T4 Gb...

  • Page 2: Table Of Contents

    VOX (Voice Operate Transmit) LCD Indicators Optional Accessories 11 and 12 Standard Features Controls 13 and 14 Glossary of Terms Troubleshooting Channel Chart 17 to 19 HT844 Technical Specifications 20 and 21 HT944 Technical Specifications 22 and 23 Certification Notes 25 and 26...

  • Page 3: Certification

    WD6 3TJ United Kingdom Declares under our sole responsibility that the product range: HT844 / HT944 Series Handheld Radio Transceiver HT Series ATEX V2 Conforms to the following standards or other nominative documents: • EN 301 178 -2 V1.2.2, EN 60945:2002, EN6095 0, in accordance with Directive 1999/5/EC.

  • Page 4: Introduction

    Introduction The Entel HT844 and HT944 are professional marine handheld transceivers that operate on the VHF marine band. The HT844 and HT944 have 58 marine international channels and 36 dealer programmable private channels. The 58 marine channels are switchable to comply with International, USA or Canadian regulations, which can be done directly via the radio’s keypad.

  • Page 5: Preparing Your Radio For Use

    Preparing Your Radio For Use 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 (Do not over tighten).

  • Page 6: Battery Care / Information

    Introduction Battery Pack • If a battery is not to be used for an extended Your Entel radio is supplied with a high performance period of time (e.g. several months) remove Lithium-Ion (Li-Ion) battery. These batteries: • the battery pack from the equipment and store Extend talk time in a cool and dry location (around 0°C) part...

  • Page 7: Battery Indicator

    • 2 Segments: 1 hour • 1 Segment: 20 mins Note: Only genuine Entel batteries should be used. With Entel batteries customer satisfaction is After 450 cycles, at switch on the radio will emit a assured, as you avoid risks from sub standard,...

  • Page 8: Using Your Radio

    3. For communications over short distances, press the [H/L] button or press & hold the MEM button to toggle from High Power (4 watts) to Low power (1 watt) denoted by an L on the LCD, (available on the HT844 only). Transmitting on 1 watt prolongs battery life, and should be selected whenever possible.

  • Page 9: Channels

    Channels International (INT), USA and Canadian (CAN) Modes The HT844 / HT944 has 3 different modes: International (INT), USA and Canadian (CAN), which are displayed on the LCD. These modes can be changed by applying the “Change Mode” function to a button. The mode can be selected by pressing the button to toggle through the options and pressing the PTT to select the desired mode.

  • Page 10: Functions

    LCD when the VOX is enabled. Changing the Sensitivity of the VOX: To control the sensitivity of the VOX assign the “VOX Level” to a button using the Entel Programmer. Press the button to display the current level, then use the rotary control on top of the radio to select the level you wish (the lower the level the lower the sensitivity).

  • Page 11: Lcd Indicators

    LCD Indicators Indicator Description High power selected (4 Watts) (HT844 model only). Low power (1 Watt). Indicated channel is memorised for scanning. Voice operated transmit mode enabled. Indicates the channel set for USA. Indicates the channel set for Canadian. Indicates the channel set for International.

  • Page 12: Optional Accessories

    Optional Accessories Attaching and 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 13: Standard Features

    * VOX = Voice Operated Transmit (hands free operation) For complete up to date list of optional accessories visit: www.entel.co.uk The use of non Entel approved accessories will invalidate your ATEX intrinsically safe approval. Refer to certificate Sira 10ATEX 2066X for permitted accessories. Standard Features Standard Features: •...

  • Page 14: Controls

    Controls Antenna \ Antenna Connector: Used to attach the antenna of the radio. Accessory Connector: The accessory connector and accessory cover. Encoder: The rotary controller. LCD: The LCD of the radio. Scan Button: Starts / Stops scanning the memorised channels. Up Button: The up button is used to change the channels.
  • Page 15 Controls 14 Orange Button: The orange button, the functionality of which depends on the configuration of the radio (by default long press is region). 15 LED (Light Emitting Diode): The LED indicator, which indicates the status of the radio: • Steady = Transmitting •...

  • Page 16: Glossary Of Terms

    Glossary of Terms Term Description Canadian Channels designated as defined and regulated by Industry Canada, Channels (RIC), Marine Communications and 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 17: Troubleshooting

    Troubleshooting SYMPTOM PROBABLE CAUSE REMEDY Battery needs charging, Charge the battery pack. Transceiver is not switching Battery is exhausted. Replace the battery pack. Use the MEM key to enter No channels memorised desired channels into scan (MEM). memory. The scan key does not start the scan.

  • Page 18: Channel Chart

    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 COMMERCIAL FISHING 156.20000 160.80000 156.20000 PUBLIC, PORT OPERATIONS PORT OPERATIONS, VTS IN SEATTLE 156.25000...
  • Page 19 Channel Chart Channel Set Frequency Channel Use Receive Transmit USA CAN 157.10000 161.70000 157.10000 PORT OPERATION, SHIP MOVEMENT 157.15000 U.S. GOVERNMENT ONLY 161.75000 157.15000 PUBLIC CORRESPONDENCE 161.80000 157.20000 PUBLIC CORRESPONDENCE 161.85000 157.25000 PUBLIC CORRESPONDENCE 157.30000 PUBLIC CORRESPONDENCE 161.90000 161.95000 157.35000 PUBLIC CORRESPONDENCE 157.40000 PUBLIC CORRESPONDENCE 162.00000 157.85000...

  • Page 20: Ht844

    Channel Chart Frequency Channel Set Channel Use Receive Transmit USA CAN INT 156.72500 PORT OPERATIONS 156.77500 PORT \ GUARD CHANNELS PORT \ GUARD CHANNELS 156.82500 PORT OPERATIONS 156.87500 PORT OPERATIONS \ INTERSHIP 156.87500 156.92500 NON-COMMERCIAL 161.52500 156.92500 PUBLIC \ PORT OPERATIONS 156.97500 COMMERCIAL 161.57500...

  • Page 21: Technical Specifications

    Technical Specifications GENERAL Frequency Range 156 - 163.275MHz Channels INT, USA, CAN and Private Channels. Channel Spacing 25 kHz Communication Method Simplex / Semi Duplex Antenna High Efficiency Helical Antenna Impedance 50 ohm Battery Type 1800 mAh Li-Ion battery pack Power Supply Voltage 7.4 V DC When transmitting (4W) - 1800mA...

  • Page 22: Technical Specifications

    Technical Specifications TRANSMITTER Power Output Selectable: HIGH = 4W, LOW = 1W Modulation 16K0G3E Oscillator Method Frequency Stability < ±0.00025% (±2.5PPM) Maximum Deviation ±5 kHz Audio Distortion < 5% (1 kHz 60%) Spurious Emissions -68 [dBc] Hum and Noise -40 [dB] RECEIVER Receiver Type Double Super Heterodyne type...
  • Page 23 Technical Specifications GENERAL Frequency Range 156 - 163.275MHz Channels INT, USA, CAN and Private channels. Channel Spacing 25 kHz Communication Method Simplex / Semi Duplex Antenna High Efficiency Helical Antenna Impedance 50 ohm Battery Type 1800 mAh Li-Ion battery pack Power Supply Voltage 7.4 V DC Battery Life...
  • Page 24 Technical Specifications TRANSMITTER Power Output Modulation 16K0G3E Oscillator Method Frequency Stability < ±0.00025% (±2.5PPM) Maximum Deviation ±5 kHz Audio Distortion < 5% (1 kHz 60%) Spurious Emissions -68 [dBc] Hum and Noise -40 [dB] RECEIVER Receiver Type Double Super Heterodyne type Sensitivity <0.25uV (12dB SINAD) Frequency Stability...

  • Page 25: Certification

    To prevent ignition of hazardous atmospheres, batteries must only be charged in an area known to be non-hazardous • Use of battery chargers other than the Entel charger supplied will invalidate the explosion protection certification • No unauthorised repairs are permitted •...
  • Page 26 Notes Use this page to record important information, such as the serial number of your radio and any private channels programmed by your dealer.
  • Page 27 Notes...
  • Page 28 ‘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.entel.co.uk...

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