User Guide – HT600 Series v01/10

Professional submersible marine handheld transceivers

Common Information
(all models)

HT642
Entry

HT644
LCD

HT648
Entry GMDSS

HT649
LCD GMDSS
 Introduction
This guide covers the ‘basics’ of your radio’s operation. To meet your exact
Common

requirements the radio may have been customised by your Entel authorised dealer.
These features will be explained in a separate guide issued by the dealer.

Table of Contents
Common Information (all models) Page
Certification 2
Radio Care 3
Battery Care 4
Packing List 5
Optional Accessories 5&6
Preparing Your Radio For Use 6&7
Using Your Radio HT642/HT648 8
Using Your Radio HT644/HT649 9

HT642
Feature List 10
Controls & Indicators 11

HT644
Feature List 12
Controls & Indicators 13
LCD Icons 14

HT648 (GMDSS)
Feature List 16
Controls & Indicators 17

HT649 (GMDSS)
Feature List 18
Controls & Indicators 19
LCD Icons 20

1
 Certification
CE Compliance Statement

Common
The HT600 series transceiver displays "CE" on the serial number label, indicating its
compliance with the essential requirements of the EEC directive for Electromagnetic
Compatibility.

Declaration of Conformity
We Entel UK Limited

OF:

320 Centennial Avenue

Centennial Park
Elstree
Borehamwood
Hertfordshire
WD6 3TJ

Declare under our sole responsibility that the product:-

HT600 series VHF handheld transceiver

Serial Number________________________________
To which this declaration relates, is in accordance with directive 99/5/EC
and conforms to the following standard or other nominative documents:-
EN 301 178-2 V.1.1.1 (2000-08), EN60950 August 1992, A11 1997 EN 60945 1997 & ETS
300 698 Annex B December 1996
Following provisions of the R&TTE directive.

M Austin

2
 Radio care
Advice Cleaning your Radio
Common

• Do not use options or accessories not After exposure to any potentially corrosive
specified by Entel substance including salt water it is recommended to
• Ensure that the radio is used within the thoroughly wash the transceiver in fresh water. If
parameters for which it was designed washing with the battery removed from the radio,
ensure that the battery is not immersed in water and
• Please switch the transceiver off before clean only with a damp cloth.
connecting optional accessories
Warning Note: Do not wash the transceiver if you suspect the
Turn the transceiver off in the following locations: waterproofing seal may be damaged. Please return to
your supplier for inspection/repair.
• 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 End of Life Disposal
• Please check and observe regulations in your When your Entel transceiver reaches the end of its
country with regard to use whilst driving 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
 Battery care / information
Introduction If liquids from the battery get into your eyes,

Common
Your Entel radio is supplied with a high performance immediately:
Lithium-Ion (Li-Ion), or primary type Lithium battery. • Wash your eyes out with fresh water and
These batteries: avoid rubbing them.
• Extend talk time • Seek medical treatment.
• Reduce the battery’s size and weight Battery Pack
• Do not suffer from ‘memory effect’ that reduces the • If a battery is not to be used for an extended
life of Ni-Cad and NiMH batteries period of time (e.g. several months) remove the
• Have a low toxicity, therefore reducing the impact battery pack from the equipment and store in a
on the environment cool and dry location (around 0°C) part charged.
Do not fully discharge the battery before
Battery Pack Precautions storage.
• Switch the transceiver OFF before charging • Each charge cycle reduces the battery’s life.
• Charge the battery pack before use Minimise the number of times you charge your
battery especially in hotter environments which
• Do not recharge the battery pack if it is already fully
further shortens a battery’s life.
charged.
• Charge the battery in accordance with the
GMDSS Battery (CLB750G)
instructions enclosed with your charger Your CLB750G GMDSS battery is a non
• Do not charge the transceiver and/or battery pack rechargeable Lithium battery. The battery is
if they are wet supplied with a security seal that must be
removed before fitting to the radio. An expiry
The battery pack includes potentially date is printed on the battery. Do not use this
hazardous components. Please: battery if past the expiry date. Replacement
batteries are available from your local authorised
• Do not disassemble or reconstruct battery
dealer. If you require assistance where to
• Do not short-circuit the battery purchase please contact Entel for details.
• Do not incinerate or apply heat to the battery
Under no circumstances must you
• Do not immerse the battery in water unless
attempt to recharge this battery
attached securly to the radio or get it wet by other
means The warranty on all batteries is 12 months from new.
• Use only the specified charger and observe Note: only genuine Entel batteries should be used.
charging requirements Customer satisfaction is assured as you can not be
• Do not pierce the battery with any object or strike supplied with sub standard, potentially dangerous
it with an instrument battery packs from 3rd party manufacturers, ensuring
• Do not use the battery pack if it is damaged in any it delivers the expected capacity and endurance.
way
On HT series batteries a breathable membrane is
• Do not reverse-charge or reverse-connect the used. This is clearly marked on the battery label.
battery Piercing the membrane will allow water ingress to
• Do not touch a ruptured or leaking battery the battery, and will invalidate the warranty.

4
 Packing List
• HT64X Transceiver
•
Common

CNB750E Rechargeable 1800mAh Li-Ion battery (May not be included with GMDSS)
• CLB750G Non rechargeable Lithium battery (GMDSS only)
• CBH750 Spring loaded belt clip
• CATXX Antenna CCA trickle charger included with certain models

Optional Accessories
Battery & Charger Options
CNB750E Spare 1800mAh Lithium-Ion battery pack with rear clip
CLB750G Spare 2000mAh Lithium non-rechargeable battery with rear clip (GMDSS models only)
CSAHT 1-way intelligent rapid charger, 110-230v
CSBHT 6-way intelligent, rapid charger, 110-230v
CCAHT-230 1-way trickle charger with 230V mains adapter
CCAHT-110 1-way trickle charger with 110V mains adapter
CCAHT-12 1-way trickle charger with cigar lighter lead, 12V DC operation

Carry Options
CFC750 HT64X soft leatherette case finished in black with carry strap
CLC752 HT642, HT648 heavy duty black leather case with strap & belt loop
CLC753 HT644 & HT649 heavy duty black leather case with strap & belt loop
CBH750 Spare spring loaded belt clip

Audio Accessory Options

CMP1/750 Compact medium duty speaker microphone with earpiece jack
CMP750 Heavy duty submersible speaker microphone
EHP9 D-shaped earpiece (plugs into CMP1/750 or CMP750 above)
EA12/750 D-shaped earpiece with in-line PTT/microphone & VOX*
EA15/750 Earpiece microphone with transparent acoustic tube & VOX*
EA19/750 D-shaped earpiece with boom microphone and in-line PTT & VOX*
EHP750 D-Shaped earpiece (connects directly to radio)
EPT40/750 Bone conductive earpiece microphone with PTT
CXR5/750 Bone conductive skull microphone with in-line PTT
CXR16/750 D-shaped earpiece and throat microphone with in-line PTT

5
 Optional Accessories cont...
CHP1/750 Light weight single earpiece headset with in-line PTT & VOX*
CHP750HS Single earpiece ear defender headset with boom mic and in line PTT for hard hat & VOX*

Common
CHP750HD Double earpiece defender headset with boom mic and in line PTT for hard hat & VOX*
CHP750D Double earpiece headband defender headset with boom mic and in line PTT & VOX*
CHP750BT Bluetooth double earpiece headband defender headset with boom mic and ear cup PTT
CBH750 Spare spring loaded belt clip
* VOX = Voice Operated Transmit (hands free operation)
Bluetooth option board in radio is required to use Bluetooth audio accessories. (Not available for HT644/HT648/HT649)
For complete up to date list of optional accessories visit www.entel.co.uk

Preparing Your Radio For Use

Simplex/ Duplex Channel Use
Your transceiver has been factory programmed in accordance with 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 selected. If you have a licence to use a specific simplex or
semi-duplex channel, contact your dealer who may be able to programme your channel using the
transceiver’s private channel memory.

INT, USA, & Canadian modes

In compliance with worldwide license regulations the following version of HT644 are available:
Version A : INT, USA, & Canadian modes
Version B, C and 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.

---
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 and pull the battery away from the
top of the radio.

6
 Preparing Your Radio For Use cont...
Common

Attaching / Removing the Belt Clip

1 2
1 To attach, locate the clip into the slot on
the back of the battery and slide up until a
you hear a “click”.
2 To remove, pull the tab (a) towards the
belt clip. Then slide the belt clip
downwards (b). b

1 2
Attaching / Removing the Aerial
1 To attach, carefully align the aerial with the
socket. Screw in the aerial clockwise (taking
care not to cross the thread) until it is seated
firmly against the top of the radio.
2 To remove, unscrew the aerial
anti-clockwise.

Attaching / Removing Audio Accessories

1 To attach, remove the accessory cover by unscrewing
the locking screw anti-clockwise (leave cover attached
or store in a safe place). Attach accessory plug by
locating over the socket. Carefully tighten the locking
screw clockwise until finger tight (do not tighten with a
screwdriver etc).
2 To remove, unscrew 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 cover so as to protect the socket.

Charging Your Radio

Several charger options are available. Please refer to your charger user guide.

7
 Using Your HT642/HT648
On / Off button

Common
Press the on / off button to turn your radio on. A short turn on beep will be heard. To turn off,
press and hold the on / off button until the display extinguishes.

Using your 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.

Transmitting on your radio

Before transmitting, ensure that the channel is not in use. To transmit press and hold the PTT
button and speak approximately 35 - 50mm from the microphone on the radio. To receive,
release the PTT button.

Channel Scan (dealer programmable feature)

Press the dealer assigned button on the radio to start scan. Press again to return to stop.

Monitor Button
Press the orange monitor button on the top of the radio to defeat the squelch mute. Press again
to return to squelch mute.

Securing Your Radio

You may secure your radio to you using either the supplied CBH750 belt clip or using an
optional leather case.

8
 Using Your HT644/HT649
On / Off button
Press the on / off button to turn your radio on. A short turn on beep will be heard. To turn off,
Common

press and hold the on / off button until the display extinguishes.
Using your 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.
Transmitting on your radio
Before transmitting, ensure that the channel is not in use. To transmit press and hold the PTT
button and speak approximately 35 - 50mm from the microphone on the radio. To receive, release
the PTT button.
Scan (HT644/HT649)
1. Select the desired channel to be scanned using the & buttons.
2. Press the [MEM] button to store the channel into the transceiver’s memory. [MEM] is displayed
on the LCD. This channel is now memorised to be scanned.
3. To add further channels, repeat steps 1 & 2.
4. To delete a channel from the transceiver’s scan memory, simply press [MEM] button again whilst
the memorised channel is displayed. [MEM] disappears.
5. All channels programmed remain in the scan memory even if the power is switched off.
6. To start scanning, press the [SCAN] key. The scan proceeds from the lowest to the highest
programmed channel number and stops on channels when a transmission is received.
7. To stop the scan at any time, press the [SCAN] key.
Emergency Channel
Channel 16 is used for emergency contact with other vessels. Hold down the [16] key for 1 second
to select channel 16.
Monitor Button
Press the blue monitor button on the top of the radio to defeat the squelch mute and release
button to mute radio. A long press (radio will beep) will hold the squelch mute open until pressed
again to cancel again to return to squelch mute.
Adjusting squelch threshold
Press the blue monitor button on the top of the radio and switch radio on. Use and
buttons to adjust threshold (between 01 - 16). Press MEM to store the setting.
A / B Button
Hold down A/B button and turn on radio. The letter A will appear and dashes _ _ indicate no
channel is assigned. Press up/down button to desired channel. Press MEM to select channel. Channel
is stored when display stops flashing. To allocate channel to B, press A/B again and repeat process.
Switch radio off/on to return to user mode. To clear a channel turn radio on holding A/B button.
Press MEM then turn radio off/on.
Securing Your Radio
You may secure your radio to you using either the supplied CBH750 belt clip or using an optional
leather case.
9
 HT642
Standard Features:

• Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes

• Robust design, exceeds MIL-STD-810C/D/E/F
• 1800mAH Lithium-Ion battery for superior operational time
• 16 programmable channels
• Full transmit power output 5 Watts

HT642
• Exceptionally loud and clear audio
• Top mounted monitor button
• Automatic power save to further increase operational time
• Low battery alert indicates when the battery needs replacing

Dealer programmable features:

• Channel Scan
• Key lock button
• Prefixed minimum volume level and fixed bleep level

10
 Controls & Indicators
7 Monitor
button 3 Channel / Scan /
Antenna control

5 Dealer
programmable 8 LED indicator
button 1
HT642

4 Push To Talk
(PTT) button

2 Volume control
6 Dealer
programmable
button 2
Speaker
1 On / Off
Microphone

1 On / Off button. Press to turn radio on, press and hold to turn off.
2 Press up / down buttons to increase / reduce volume.
3 Channel / Scan Control. Rotate to select the desired channel or scan setting.
4 Push To Talk (PTT) button. Press to speak and release to listen.
5 Dealer programmable button 1 (ask your dealer for more information).
6 Dealer programmable button 2 (ask your dealer for more information).
7 Monitor button. Press button to turn on / off.
8 LED indicator.
• RED Steady = Transmitting
• RED flashing slowly = Battery needs re-charging
• GREEN Steady = Receiving

11
 HT644
Standard Features:

• Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes

• Robust design, exceeds MIL-STD-810C/D/E/F
• LCD screen to display channel number
• 1800mAH Lithium-Ion battery for superior operational time
• INT, USA, CAN channels
• Full transmit power output 5 Watts
• Exceptionally loud and clear audio
• Ch 16 shortcut button
• Scan button
• Monitor button
• MEM button
• Automatic power save to further increase operational time

HT644
• Low battery alert indicates when the battery needs replacing

Dealer programmable features:

• Key lock button
• Prefixed minimum volume level and fixed bleep level

12
 Controls & Indicators
1 Monitor button

Antenna 2 On / off
Volume control

11 WX button 12 LED indicator

10 H/L button 3 Scan button

9 Push To Talk
(PTT) button
8 Lamp / key 4 Up / down buttons
lock button
HT644

7 16/9 button
5 MEM button
6 A/B button
Speaker

Microphone
1 Monitor button. Press to monitor channel.
2 On / off Volume control
3 Channel scan button. Press to start / stop channel scanning.
4 Up / down buttons. Press up / down buttons to change channel.
5 MEM button. Memorise a desired channel for scanning.
6 A/B button. Instant access to preassigned channels (if programmed)
7 16/9 quick access button.
8 Lamp/key lock button. Momentarily pressing this button illuminates the LCD display. Holding this button for
over 1 second activates the key lock. To deactivate press button again.
9 PTT button. Press & hold to speak. Release to listen.
10 H/L button. Press and hold this button for one second to toggle between high and low power (1 & 5 Watts).
11 WX button. Immediately recalls the weather channels.
12 LED indicator.
• RED Steady = Transmitting
• RED flashing slowly = Battery needs re-charging
• GREEN Steady = Receiving

13
 LCD Indicators
• High power selected (5 Watts)

• Low power (1 Watt)

• Transmit in progress

• Receive in progress

• Indicated channel is memorised for scanning

• Scrambler mode enabled (version A & B only)

• Voice operated mode enabled

• Indicates the channel set for USA

HT644
• Indicates the channel set for Canadian

• Indicates the channel set for International

• NOAA weather channels (USA and Canadian waters only)

• A ship-to-ship channel (in USA or Canadian mode)

• Battery life indicator

• Indicates keypad is locked, excluding the PTT, H/L and LAMP buttons

• Private channel number selected

• Duplex channel selected (not simplex)

14
 PAGE
INTENTIONALLY
LEFT BLANK

15
 HT648
Standard Features:

• Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes

• Robust design, exceeds MIL-STD-810C/D/E/F
• GMDSS (Conforms to Pan European Specification ETS300-225
for the use of radios for Safety at sea
• Non rechargeable Lithium battery for superior operational time
• 16 programmable channels
• Transmit power output 1 Watt
• Exceptionally loud and clear audio
• Top mounted monitor button
• Automatic power save to further increase operational time
• Low battery alert indicates when the battery needs replacing

Dealer programmable features:

• Channel Scan

HT648

16
 Controls & Indicators
7 Monitor
button
3 Channel Change
Antenna

5 Dealer
programmable 8 LED indicator
button 1

4 Push To Talk
(PTT) switch

6 Dealer 2 Volume control

programmable
button 2

Speaker
1 On / Off

Microphone

1 On / Off button. Press to turn radio on, press and hold to turn off.
HT648

2 Press up / down buttons to increase / reduce volume.

3 Channel change control, rotate to select the desired channel or scan setting.
4 Push to talk button, press to speak and release to listen.
5 Dealer programmable button 1 (ask your dealer for more information).
6 Dealer programmable button 2 (ask your dealer for more information).
7 Monitor button. Press to turn monitor on / off.
8 LED indicator.
• RED Steady = Transmitting
• RED flashing slowly = Battery needs re-charging
• GREEN Steady = Receiving

17
 HT649
Standard Features:

• Environmentally protected to IP68 i.e. submersible to 5 metres for up to 60 minutes

• Robust design, exceeds MIL-STD-810C/D/E/F
• GMDSS (Conforms to Pan European Specification ETS300-225 for the use of radios for Safety
at sea
• LCD screen to display channel number
• Non rechargeable Lithium battery for superior operational time
• 19 International Simplex channels
• Transmit power output 1 Watt
• Exceptionally loud and clear audio
• Ch 16 shortcut button
• Scan button
• Monitor button
• MEM button
• Automatic power save to further increase operational time
• Low battery alert indicates when the battery needs replacing

HT649

18
 Controls & Indicators

Antenna Volume control

2 Monitor button 9 LED indicator

3 Scan button
8 Push To Talk
(PTT) switch

7 Function button 4 Channel change

1 On / Off
5 MEM button
6 Ch16 button Speaker

Microphone
1 On / Off button. Press to turn radio on, press and hold to turn off.
2 Monitor button. Press to monitor channel
3 Channel scan button. Press to start/stop channel scanning.
4 Channel change buttons. Press up/down buttons to change channel.
5 Mem button. Press to memorise channel to scan.
6 Ch 16 button. Shortcut button to access channel 16.
7 Function button:
• Short press will illuminate display backlight for 3 short period.
• Long press will activate/deactivate keylock
HT649

8 PTT button. Press & hold to speak. Release to listen.

9 LED indicator.
• RED Steady = Transmitting
• RED flashing slowly = Battery needs re-charging
• GREEN Steady = Receiving

19
 LCD Indicators

• Keypad lock

• Battery State

• Channel Monitor

• Memorise channel for scanning

HT649

20
 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

21
Notes

Notes

22
 ‘the
professional’s
choice’

Copyright Entel UK Ltd. 2009

<Intended Country Of Use>
BE EL LU RO
BG ES HU SI
CZ FR MT SK
DK IT NL FI
DE CY AT SE
EE LV PL UK
IE LT PT

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