HT644 GMDSS User Guide v06/11
Professional submersible marine handheld transceivers
HT644 GMDSS
LCD
TOC
Table of Contents |
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Topic |
Page |
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Certification |
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2 |
Introduction |
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3 |
Packing List |
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3 |
Radio Care |
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3 |
Preparing Your Radio For Use |
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4 |
Battery Care / Information |
5, 6 & 7 |
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Using Your HT644 GMDSS |
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8 |
Reception |
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8 |
Transmitting |
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8 |
Channels |
9 |
& 10 |
Functions |
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11 |
The Scan Function |
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11 |
VOX (Voice Operate Transmit) |
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11 |
LCD Indicators |
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12 |
Optional Accessories |
13 |
& 14 |
Standard Features |
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14 |
Controls |
15 |
& 16 |
Glossary of Terms |
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17 |
Troubleshooting |
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18 |
Channel Chart |
19 |
& 21 |
Technical Specifications |
22 |
& 23 |
Notes |
24 & 25 |
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1
Introduction
Declaration of Conformity
We Entel UK Limited of:
320 Centennial Avenue
Centennial Park
Elstree
Borehamwood
Hertfordshire
WD6 3TJ
United Kingdom
HT644 GMDSS Series Handheld RadioTransceiver
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. |
• |
EN 60945 |
October 2002 Edition 4 |
• |
IMO Resolution A.694 (17) |
1991 |
• |
IMO Resolution A.809 (19) |
1995 |
• |
ITU-Rm.489-2 |
October 1995 |
Serial Number________________________________
Certificate
M Austin
Date: 21 March 2011
Quality Manager
2
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. This is done via the radio’s keypad. It has an emergency channel, which can be immediately selected from any channel using the red 16/9 button.Weather channels can also be accessed immediately using the [WX] key.The HT644 GMDSS includes the following features: Scan, A/B quick access channels,
battery life indicator, VOX (voice activated transmit), low battery indicator, large LCD with back light.
Packing List
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Package 1 |
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Package 2 |
• |
HT644 GMDSS Transceiver |
• |
HT644 GMDSS Transceiver |
• CLB750x 2000mAh Lithium battery |
• |
CLB750x2000mAh Lithium battery |
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• CBH750 Spring loaded belt clip |
• CNB750E Rechargeable 1800mAh Li-Ion battery |
||
• |
CAT40 High Efficiency Antenna |
• |
CCA Trickle Charger |
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• CBH750 Spring loaded belt clip |
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• CAT40 High Efficiency Antenna
Radio Care
Warranty
The HT644 GMDSS comes with a 24 month warranty, for details see our full terms & conditions.
Advice
•Do not use options or accessories not specified by Entel
•Ensure that the radio is used within the parameters for which it was designed
•Please switch the transceiver off before connecting optional accessories
Warning
Turn the transceiver off in the following locations:
•In explosive atmospheres (flammable gas, dust including metallic & grain powders etc)
•Whilst taking on fuel or while parked near a fuel station
•Near explosives or blasting sites
•In aircraft, medical institutions or near persons known to be wearing a pacemaker
Caution
•Do not disassemble or modify the transceiver for any reason
•Do not transmit while touching the antenna terminal or any exposed metallic parts of the aerial as this may result in a burn
•Please check and observe regulations in your country with regard to use whilst driving
Cleaning your Radio
After exposure to any potentially corrosive substance including salt water it is recommended to thoroughly wash the transceiver in fresh water. If washing with the battery removed from the radio, ensure that the battery is not immersed in water & that the accessory cap is attached & clean only with a damp cloth.
Note: Do not wash the transceiver if you suspect the waterproofing seal may be damaged. Please return to your supplier for inspection / repair.
End of Life Disposal
When your Entel transceiver reaches the end of its useful life, please ensure that the unit is disposed of in an environmentally friendly way. For country specific information please see www.entel.co.uk/recycling.
3
PreparingYour Radio For Use
Attaching / Removing the Aerial |
1 |
2 |
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1 To attach, carefully align the aerial with the |
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socket. Screw in the aerial clockwise (taking |
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care not to cross the thread) until it is seated |
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firmly with the accessory cover’s rubber ring |
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between the aerial & the the top of the radio. |
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2 To remove, unscrew the aerial anti-clockwise. |
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Attaching / Removing Audio Accessories
3To 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).
4To remove, unscrew accessory plug the locking screw by hand in an anti-clockwise direction (carefully use a coin or screwdriver if too tight). Ensure you re-fit the accessory
waterproof cover so as to protect the accessory socket.
Preparing
Attaching / Removing the Belt Clip
5To attach, slot the clip onto the slot on the back of the battery and slide up until you hear a “click”
6To remove, pull the tab towards the belt clip (a).Then slide the belt clip downwards (b)
5
a
b
6
4
Battery
Battery Care / Information
Introduction
Your Entel radio is supplied with a high performance battery. These batteries:
•Extend talk time
•Reduce the battery’s size and weight
•Do not suffer from ‘memory effect’ that reduces the life of Ni-Cad and NiMH batteries
•Have a low toxicity, therefore reducing the impact on the environment
Note: only genuine Entel batteries should be used. Customer satisfaction is assured as you can not be supplied with sub standard, potentially dangerous battery packs from 3rd party manufacturers, ensuring it delivers the expected capacity and endurance.
On HT series batteries a breathable membrane is used.This is clearly marked on the battery label. Piercing the membrane will allow water ingress to the battery, and will invalidate the warranty.
Battery Pack
•If a battery is not to be used for an extended period of time (e.g. several months) remove the battery pack from the equipment and store in a cool and dry location (around 0°C) part charged.
Do not fully discharge the battery before storage
•Each charge cycle reduces the battery’s life. Minimise the number of times you charge your battery especially in hotter environments which further shortens a battery’s life
GMDSS Battery (CLB750x)
The GMDSS batteries (CLB750L \ G \ M depending on which cells have been used in the battery pack) are non-rechargeable Lithium batteries. The battery is supplied with a security seal that must be removed before fitting to the radio. An expiry date is printed on the battery. Do not use this battery if past the expiry date. Replacement batteries are available from your local authorised dealer. If you require assistance where to purchase please contact Entel for details.
Under no circumstances must you attempt to recharge these batteries
Battery Pack Precautions
•Switch the transceiver OFF before charging
•Charge the battery pack before use
•Do not recharge the battery pack if it is already fully charged.
•Charge the battery in accordance with the instructions enclosed with your charger
•Do not charge the transceiver and /or battery pack if they are wet.
The battery pack includes potentially hazardous components. Please:
•Do Not disassemble or reconstruct battery
•Do Not short-circuit the battery
•Do Not incinerate or apply heat to the battery
•Do Not immerse the battery in water unless attached securely to the radio or get it wet by other means
•Use only the specified charger and observe charging requirements
•Do Not pierce the battery with any object or strike it with an instrument
•Do Not use the battery pack if it is damaged in any way
5
Battery Care / Information
•Do Not reverse-charge or reverse-connect the battery
•Do Not touch a ruptured or leaking battery
If liquids from the battery get into your eyes, immediately:
•Wash your eyes out with fresh water & avoiding rubbing them
•Seek medical treatment
Battery Charging
1.Connect the AC adapter to the charger pod. The LED status light will illuminate green indicating ready for charge
2.Turn the transceiver off
3.Insert the battery pack into the charger pod, either with or without the transceiver attached. The LED status light changes from green to RED & trickle charge begins
4.A fully discharged battery pack will take approximately 6 hours to charge, depending on the remaining power condition.When charge is complete, the LED status light turns green.
Overcharging:
The battery pack has an over-current protection circuit fitted. When charging a completely discharged battery i.e. first charge, ensure the battery is removed from the radio and then re-attached (if fitted to radio when charging). This will reset the protection circuitry and ensure normal operation.This process will need to be repeated if the battery is allowed to completely discharge in the future. In normal use this is unlikely.
Battery Indicator
For your safety and convenience your transceiver continually monitors the battery pack and gives an indication on the LCD:
•3 Segments: 12 hours
•2 Segments: 1 hour
•1 Segment: 20 mins
Note: Only genuine Entel batteries should be used. Customer satisfaction is assured as you can not be supplied with sub standard, potentially dangerous battery packs from 3rd party manufacturers, ensuring it delivers the expected capacity and endurance.
On HT series batteries a breathable membrane is used.This is clearly marked on the battery label. Piercing the membrane will allow water ingress to the battery, & will invalidate the warranty.
Battery
6
Battery
Battery Care / Information
Attaching / Removing the Battery Pack 1 |
2 |
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 & pull the battery away from the top of the radio.
7
UsingYour HT644 GMDSS
TurningThe 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.
UsingYour radio
Before using your radio you may need to adjust the volume on the radio to take in to account background noise. Adjust the volume using the rotary control on the top of the radio.
Reception
1.To Turn the radio on rotate the volume control clockwise, to select the desired audio level continue rotating the control clockwise. to increase volume & counter clockwise to decrease. After power-on, the transceiver will always default to the last channel selected.
2.One second after start-up a tone is generated to indicate the transceiver has passed its self-diagnostic test. During standby the LED indicator will pulse amber every 3 seconds, to verify its circuitry is functioning correctly.
3.Use the [UP/DOWN] keys to select a desired channel. A full listing of all available channels can be found on page 17-18.
4.When receiving a signal the LED indicator illuminates green & an “RX” is displayed on the LCD.
5.While the radio is operating, if you hear white noise you may need to adjust the squelch threshold of the radio, for more information see page 8 “Adjusting Squelch Threshold”. On some channels a slight adjustment of the squelch threshold is needed as some channels have a higher noise level than others.
Transmitting
1.Perform steps 1 through 3 of RECEPTION.
2.Before transmitting, monitor the channel and make sure it is clear.
3.For communications over short distances, press the [H/L] key and select low power (1 watt). Transmitting on 1 watt prolongs battery life, and should be selected whenever possible.
4.When receiving a signal, wait until the signal stops before transmitting.The transceiver cannot transmit and receive simultaneously.
5.Press the [PTT] (Push-To-Talk) button to begin your transmission.To confirm transmission in progress the LCD indicator illuminates TX and the LED illuminates RED.
6.Hold the transceiver 1 inch from your mouth and speak slowly and clearly into the microphone.
7.When the transmission is finished release the [PTT] button.
YourUsing
8
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