HT844 / HT944 User Guide v07/10 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 LCD HT944 LCD
Table of Contents TOC Common Information (all models) Page Certification Introduction Packing List Radio Care Preparing Your Radio For Use Battery Care / Information Using Your Radio Reception Transmitting Channels Functions The Scan Function VOX (Voice Operate Transmit) LCD Indicators Optional Accessories Standard Features Controls Glossary of Terms Troubleshooting Channel Chart 2 3 3 3 4 5 and 6 7 7 7 8 9 9 9 10 11 and 12 12 13 and 14 15 16 17 to 19 HT844 Technical Specifications 20 and 21 HT944 Te
Certification Declaration of Conformity 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, EN60950, in accordance with Directive 1999/5/EC.
Common 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. It has an emergency channel, which can be immediately selected from any channel using the 16 button.
Preparing Your Radio For Use Attaching / Removing the Battery Pack 1 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). 2 To remove, unscrew the locking screw anticlockwise and pull the battery away from the top of the radio. 4 3 Common 1 2 Attaching / Removing the Aerial 3 To attach, carefully align the aerial with the socket.
Common Battery Care / Information Introduction Battery Pack Your Entel radio is supplied with a high performance Lithium-Ion (Li-Ion) battery.
Battery Care / Information Battery Indicator Common For your safety and convenience your transceiver continually monitors the battery pack and gives an indication on the LCD: • 3 Segments: Fully charged • 2 Segments: 1 hour • 1 Segment: 20 mins Note: Only genuine Entel batteries should be used.
Using Your Radio Common Turning the Radio On and Off To turn the radio ON press and hold the red power button until the LCD iluminates and a power on tone is generated after 1 second to indicate the transceiver has passed its self-diagnostic test. To turn the radio OFF press and hold the power button until the LCD displays “POWERING OFF” and its illumination switches off. Using Your Radio Before using your radio you may need to adjust the volume on the radio to take in to account background noise.
Channels International (INT), USA and Canadian (CAN) Modes Emergency Channels To select the emergency channel, press the [16] button from any channel. Channel 16 appears on the display. To recall the previous channel used, press the [16] button once again. Monitor Channels Press the monitor button [MON] to defeat the squelch mute this is displayed as a speaker on the LCD and release to mute the radio.
Functions Common The Scan Function Programming the Scan Function: 1. Select the desired channels to be scanned using the and buttons. 2. Press the [MEM] button to store the channel in the transceiver’s memory. [M] will be displayed on the LCD if the channel is memorised and will be scanned. 3. To add further channels, repeat steps 1 and 2. 4. To delete a channel from the transceiver’s scan list, press the [MEM] button on a channel that displays the [MEM] icon until the icon disappears. 5.
LCD Indicators Common 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. The Monitor function is enabled. Battery life indicator. Indicates keypad is locked, excluding the PTT. Either P, F or L are displayed as Private channel number selected.
Optional Accessories Common 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). To remove an accessory: Unscrew the locking screw of the accessory by hand in an anti-clockwise direction (carefully use a coin or screwdriver if too tight).
Optional Accessories Other Accessories 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: • Environmentally protected to IP68 i.e.
Controls Common 1 2 3 4 5 6 7 8 9 10 11 12 13 13 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. Down Button: The down button is used to change the channels. [MEM] Memory Button: The Memory button memorises a desired channel for scanning.
Controls Common 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: • RED Steady = Transmitting • RED Flashing slowly = Battery needs re-charging • GREEN Steady = Receiving • AMBER Steady = Receiving but with incorrect subtone. • AMBER Pulse every 3 s = Radio in standby mode.
Glossary of Terms Common Term Canadian Channels Duplex Encryption FM International Channels Marina Channels Private Channels PTT RX Description Channels designated as defined and regulated by Industry Canada, (RIC), Marine Communications and Traffic Services. Transmit and receive on different frequencies. Scrambled audio for extra privacy. Frequency Modulation. Channel designations as defined for use in international waters by the International Telecommunications Union (ITU).
Troubleshooting Transceiver is not switching on. The scan key does not start the scan. PROBABLE CAUSE Battery needs charging, Charge the battery pack. Battery is exhausted. Replace the battery pack. No channels memorised (MEM). Squelch is not adjusted. Cannot change any function. Key lock is switched on. The LED on the charger does not illuminate when charging. Dirty terminal contact on battery or charger. Use the MEM key to enter desired channels into scan memory.
Channel Chart Channel Chart CH 1A Frequency Channel Set S/D Receive Transmit USA CAN INT X S Channel Use PORT OPERATION AND COMMERCIAL 156.05000 1 X X D 160.65000 156.05000 PUBLIC, PORT OPERATIONS 2 X X D 160.70000 156.10000 PUBLIC, PORT OPERATIONS 3A X S 3 X 4A X 4 5A X X D X D X D X S 156.30000 INTER-SHIP SAFETY S 156.35000 COMMERCIAL S X 5 6 X X 7A X X 7 US GOVERMENT, COAST GUARD 156.15000 S X D 160.75000 156.
Channel Chart 22A X X X 22 23A S X D S Channel Use 157.10000 161.70000 157.10000 PORT OPERATION, SHIP MOVEMENT U.S. GOVERNMENT ONLY 157.15000 X X D 161.75000 157.15000 PUBLIC CORRESPONDENCE 24 X X X D 161.80000 157.20000 PUBLIC CORRESPONDENCE 25 X X X D 161.85000 157.25000 PUBLIC CORRESPONDENCE 26 X X X D 161.90000 157.30000 PUBLIC CORRESPONDENCE 27 X X X D 161.95000 157.35000 PUBLIC CORRESPONDENCE 28 X X X D 162.00000 157.
Channel Chart Channel Chart CH Frequency Channel Set S/D Receive Transmit USA CAN INT X 74 X X S 156.72500 PORT OPERATIONS 75 X X S 156.77500 PORT \ GUARD CHANNELS 76 X X S 156.82500 PORT \ GUARD CHANNELS 77 X S 156.87500 PORT OPERATIONS S 156.87500 PORT OPERATIONS \ INTERSHIP S 156.
Technical Specifications GENERAL Frequency Range Channels Channel Spacing 156 - 163.275MHz INT, USA, CAN and Private Channels. 25 kHz Communication Method Simplex / Semi Duplex Antenna High Efficiency Helical Battery Type Power Supply Voltage 50 ohm 1800 mAh Li-Ion battery pack 7.4 V DC When transmitting (4W) - 1800mA Current Drain (nominal) When transmitting (1W) - 850mA When receiving (0.
Technical Specifications TRANSMITTER Power Output Modulation Oscillator Method Frequency Stability Maximum Deviation HT844 Audio Distortion Spurious Emissions Hum and Noise Selectable: HIGH = 4W, LOW = 1W 16K0G3E PLL < ±0.00025% (±2.5PPM) ±5 kHz < 5% (1 kHz 60%) -68 [dBc] -40 [dB] RECEIVER - Receiver Type Sensitivity Double Super Heterodyne type <0.25uV (12dB SINAD) Frequency Stability ±0.00025%(±2.
Technical Specifications GENERAL Frequency Range Channels Channel Spacing 156 - 163.275MHz INT, USA, CAN and Private channels. 25 kHz Communication Method Simplex / Semi Duplex Antenna High Efficiency Helical Antenna Impedance Battery Type 50 ohm 1800 mAh Li-Ion battery pack Power Supply Voltage 7.4 V DC Battery Life 19 hours.
Technical Specifications TRANSMITTER Power Output Modulation Oscillator Method Frequency Stability Maximum Deviation Audio Distortion Spurious Emissions HT944 Hum and Noise 1W 16K0G3E PLL < ±0.00025% (±2.5PPM) ±5 kHz < 5% (1 kHz 60%) -68 [dBc] -40 [dB] RECEIVER Receiver Type Sensitivity Double Super Heterodyne type <0.25uV (12dB SINAD) Frequency Stability ±0.00025%(±2.
Certification Certification ATEX approved Intrinsically Safe Sira 10ATEX2066X HT844 HT944 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 Ta = -20°C to + 28°C* or Ta = -20°C to + 40°C* Ta = -20°C to + 28°C* or Ta = -20°C to + 40°C* * Depending on the battery pack fitted. SAFETY NOTES • HT Series ATEX V2 radios must always be used within the terms of their certification • Keep the radios away from aggressive substances.
Notes Notes Use this page to record important information, such as the serial number of your radio and any private channels programmed by your dealer.
Notes Notes 26
‘the professional’s AT BE BG CY CZ DK EE FI FR DE GR HU IS IE IT LV LT LU MT NL NO PL PT RO SK SI ES SE CH UK 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 Copyright Entel UK Ltd.
