HƯỚNG DẪN SỬ DỤNG PORTABLE VHF TRANCEIVER JRC

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Sr No. 345
MODEL: Bntel HT844

PORTABLEVHFTRANOEWER
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HT844

VHF MARINE PORT ABLE TRANSCEIVER

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CNB950E

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BATTERY PACK

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BATTERY CHARGER

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INTRINSICALLY SAFE CERTIFICATION

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CAT40IS

ANTENNA

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SPECIFICATION

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NAME

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VHF MARINE PORTABLE TRANSCEIVER
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TYPE·OUTLINE

Q'TY

HT844
(0029491010)

1

INTRINSICALLY SAFE

With Belt Clip

CAT40IS
(0005501 030)

1

For Main Unit

Battery Pack

CNB950E
(0029367010)

1

For Main Unit

Battery Charger

CSAHT
(0021381010)

1

1OOV

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Main Unit

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Antenna

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REMARKS

240V AC


6


9.

10

SUBMERSIBLE

59.0

37.5
52.7

IJRDER
SCALE

Weight: 345g (with Antenna, Battery Pack and Belt Clip)

PRJ.

CHECKED BY
N.KCBAYASHI

PART NAME

PART CODE

VHF FM TRANSCEIVER 002949101 0

PAGE


SPECIFICATIONS
HT844
1.

GENERAL

(1) Frequency range

TX/RX 156.000-163.275MHz

(2) Channels

International (INT), USA, Canadian
(CAN) & Private Channels
7.4 VDC

(3) Input Voltage

(5) Channel spacing

SOmA (standby). 160mA (RX)
1.8A (TX-Hi). 0.85A (TX-Lo)
25KHZ

(6) Dimensions

131 (H) X 59(W) X 37.5 (D)

(7) Weight

345g (with Antenna, Battery & Belt Clip)

(8) Temperature range

-20°C

(4) Current Drain

to

+55°C

(9) IP Grade(Enviromental Protection) IP68(Submersible-5m for 1hour)
2.

T RA NSMITT ER

(1) RF Power Output

4W at Hi power
1W at Lo power

(2) Conducted spurious emission

-68dB

(3) Hum and noise

> -40dB

(4) Audio Distortion

< 5% (1kHz 60%)

(5) Microphone sensitivity

10- 15mV

3.

RECEIVER
( 1) Receiver Type

Double Super Heterodyne type
- 12dB SINAD

(2) Sensitivity
(3) Frequency Stability

± 0.00025°/o ( ±2.5PPM)

(4) Adacent Channel Selectivity

-70dB

(5) Spurious and image rejection

-60dB

(6) Audio Output

660mW

(7) Distortion

< 3% Typical @ 500mW


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CAT 40IS ANTENNA

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DRA\JING NO.

NIPPON LAMBDA C0.1 LTD
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CONTENTS

DRAWING NO,

NIPPON LAMBDA CO, LTD,
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REG I STEREO

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0029367010


10

INPUT : AC lOOV "'"'240V 1ctl 60Hz
OUTPUT : DC8.4 V 850MA
If Input Volto.ge is lOOVACJ
AC Plug is o. tto.checl with J- Type

BOTTOM BIE'vl

Plug Aclo.ptor.

74.8

'Weight : 260g
PRJ.

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CHECKED BY

PART NAME

PART CODE

N.KOBAYASHI

BATTERY CHARGER

0021381010

PAGE


CERTIFICATION

1

EC TYPE-EXAMINATION CERTIFICATE

2

Equipment intended for use in Potentially Explosive Atmospheres Directive 94/9/EC

3

Certificate Number:

Sira 10ATEX2066X

4

Equipment:

Handheld Radio Transceiver HT Series HTSXX and HT9XX

5

Applicant:

Entel UK Ltd

6

Address:

320 Centennial Avenue
Centennial Park
Elstree

Borehamwood
Herts.
WD6 3TJ

Issue:

0

UK
7

This equipment and any acceptable variation thereto is specified in the schedule to this certificate and
the documents therein referred to.

8

Sira Certification Service, notified body number 0518 in accordance with Article 9 of Directive 94/9/EC
of 23 March 1994, certifies that this equipment has been found to comply with the Essential Health and
Safety Requirements relating to the design and construction of equipment intended for use in
potentially explosive atmospheres given in Annex II to the Directive.
The examination and test results are recorded in the confidential reports listed in Section 14.2.

9

Compliance with the Essential Health and Safety Requirements, with the exception of those listed in the
schedule to this certificate, has been assured by compliance with the following documents:
EN 60079-0:2006
EN 60079-0:2009

EN 60079-11:2007

(used for guidance in respect of marking)

10

If the sign 'X' is placed after the certificate number, it indicates that the equipment is subject to special
conditions for safe use specified in the schedule to this certificate.

11

This EC type-examination certificate relates only to the design and construction of the specified
equipment. If applicable, further requirements of this Directive apply to the manufacture and supply of
this equipment.

12

The marking of the equipment shall include the following:

HTSXX

HT9XX

II 2G
Ex ib IIA T4 Gb
Ta = -20°C to +28°C* or
Ta = - 20°C to +40°C*
* Dependent upon battery pack fitted

II 2G
Ex ib IIC T4 Gb
Ta = -20°C to + 28°C* or

Ta = -20°C to +40°C*

Project Number
C. Index

D R Stubbings BA MIET
Certification Manager

21484
15

This certificate and its schedules may only be
reproduced in its entirety and without change.

Sira Certification Service
Page 1 of 4
Form 9400 Issue 1

Rake Lane, Eccleston, Chester, CH4 9JN, England
Tel:
Fax:
Email:
Web:

+44 (0) 1244 670900
+44 (0) 1244 681330

WINW.siracertification.com

CERTIFICATION

SCHEDULE
EC TYPE-EXAMINATION CERTIFICATE
13

Sira 10ATEX2066X
Issue 0

DESCRIPTION OF EQUIPMENT
The Handheld Radio Transceiver HT Series is comprised of a range of hand held battery powered
portable two way radios. Each model has a plastic enclosure containing printed circuit boards and a
keypad. Models not fitted with a liquid crystal display are indicated below in the listing of the model
range. A transmit/receive antenna is mounted externally by a screw connection. The battery supply is
contained in a separate pack which is attached to the main enclosure by plastic clips and secured by a
locking screw. The battery supply comprises two rechargeable lithium ion cells connected in series.
The battery pack maintains intrinsic safety when separated, permitting removal in a hazardous area.
The battery pack shall not be recharged in a hazardous area.
The complete range is comprised of the following models:

and

Gas Group IIC
UHF(400-520MHz)
7-key, LCD

3-key, no LCD

3-key, LCD

8-key, LCD

8-key

+ 0-9, LCD

HT981, HT981S

HT952, HT982,
HT982S, HT982T,
HT982R, HT982U,
HT982SU,HT982TU,
HT982RU,HT982HUR
HT953, HT983,
HT983U, HT983S,
HT983SU
HT985, HT985T,
HT985R, HT985U,
HT985TU HT985RU
HT986, HT986T,
HT986R, HT986U,
HT986TU, HT986RU

VHF (mid band 66-88MHz)
3-key, no LCD
HT912, HT912S,
3-key, LCD
8-key, LCD
8-key

+ 0-9, LCD

HT912T, HT912R
HT913, HT913S
HT915, HT915T,
HT915R
HT916, HT916T,
HT916R

VHF band (136-174MHz)
3-key, no LCD
HT922, HT922S,

3-key, LCD
7-key, LCD
8-key, LCD
8-key

+ 0-9, LCD

HT922T HT922R,
HT942, HT942 ATIS
HT923 HT923R
HT944 I HT944 ATIS
HT925, HT925T
HT925R
HT926, HT926T
HT926R

This certificate and its schedules may only be

reproduced in its entirety and without change.

Gas Group IIA
UHF(400-520MHz)
3-key, no LCD

3-key, LCD

8-key, LCD

8-key

+ 0-9, LCD

VHF (66-88MHz)
3-key, no LCD
3-key, LCD
8-key, LCD
8-key

+ 0-9, LCD

HT882IIA,HT882SIIA,
HT882TIIA,HT882RIIA,
HT882UIIA,HT882SUIIA,
HT882TUIIA,HT882RUIIA
HT883IIA, HT883UIIA,
HT883SIIA, HT883SUIIA

HT885IIA, HT885TIIA,

HT885RIIA, HT885UIIA,
HT885TUIIA, HT885RUIIA
HT886IIA, HT886TIIA,
HT886RIIA, HT886UIIA,
HT886TUIIA, HT886RUIIA

HT812IIA, HT812SIIA,
HT812TIIA, HT812RIIA
HT813IIA, HR813SIIA
HT815IIA, HT815TIIA,
HT815RIIA
HT816IIA, HT816TIIA,
HT816RIIA

VHF band (136-174MHz)
3-key, no LCD
HT822IIA, HT822SIIA,

3-key, LCD
7-key, LCD
8-key, LCD
8-key

+ 0-9, LCD

HT822TIIA, HT822RIIA,
HT842IIA, HT842IIA ATIS
HT823 IIA HT823SIIA
HT844 IIA, HT844 IIA ATIS
HT825IIA, HT825TIIA

HT825RIIA
HT826IIA, HT826TIIA
HT826RIIA

Sira Certification Service
Rake Lane, Eccleston, Chester, CH4 9JN, England

Page 2 of 4
Form 9400 Issuel

Tel:
Fax:
Email:
Web:

+44 (0) 1244 670900
+44 (0) 1244 681330

www.siracertification.com


Ill

Sl

a

CERTIFICATION

SCHEDULE

EC TYPE-EXAMINATION CERTIFICATE

Sira 10ATEX2066X
Issue 0

An external multi-pin screw threaded connector is provided for earphone and microphone accessories.
Only the specified types of accessories are permitted for use in hazardous areas.
The following accessories are permitted for use with all models:
CMP950 microphone
EA/19/950 earpiece microphone
EA15/950 ear/microphone
CHP950HD ear defender
CHP950HS ear defender
The following accessories are permitted for use only with the ATEX certified models HT917, HT981,
HT981S:
SAVOX 100+ Radio microphone/speaker unit (Certificate vrr 06 ATEX 036X)
SAVOX 400 microphone/speaker unit (Certificate vrr OS ATEX 009X)
SAVOX C-C500 microphone/speaker unit (Certificate vrr 06 ATEX 043X)

Variation 1- This variation introduced the following changes:
i.

The introduction of a new VHF RF printed circuit board which is a variation of the original VHF
Board.

14

DESCRIPTIVE DOCUMENTS

14.1

Drawings
Refer to Certificate Annexe.

14.2

Associated Sira Reports and Certificate History
Issue
0

Date
11 May 2010

Report number
R21484A/OO
R21484B/OO

Comment
The release of the prime certificate, including the
incorporation of Variation 1.

15

SPECIAL CONDITIONS FOR SAFE USE (denoted by X after the certificate number)

15.1

The equipment shall not be used outside of the ambient temperature range Tamb = -20°C to +28°C
when the battery pack Type CNB940E 1700mAh battery pack is used. When the CNB950E battery pack
is used, the equipment must not be used outside of the ambient temperature range -20°C to +40°C

indicated on the battery pack for the 1030mAh and 1800mAh versions.

15.2

The equipment battery pack shall only be recharged with the dedicated Entel battery re-charging
equipment supplied.

15.3

The equipment battery pack shall not be recharged in a hazardous atmosphere.

15.4

Refer to the certificate for the permitted accessories.

This certificate and its schedules may only be
reproduced in its entirety and without change.

Sira Certification Service
Rake Lane, Eccleston, Chester, CH4 9JN, England

Page 3 of 4
Form 9400 Issuel

Tel:
Fax:
Email:
Web:

+44 (0) 1244 670900

+44 (0) 1244 681330
info@siracertification. com
www. siracertification. com


Ill

Sl
CERTIFICATION

SCHEDULE
EC TYPE-EXAMINATION CERTIFICATE

Sira 10ATEX2066X

Issue 0
16

ESSENTIAL HEALTH AND SAFETY REQUIREMENTS OF ANNEX II (EHSRs)
The relevant EHSRs that are not addressed by the standards listed in this certificate have been
identified and individually assessed in the reports listed in Section 14.2.

17

CONDITIONS OF CERTIFICATION

17.1

The use of this certificate is subject to the Regulations Applicable to Holders of Sira Certificates.

17.2

Holders of EC type-examination certificates are required to comply with the production control
requirements defined in Article 8 of directive 94/9/EC.

This certificate and its schedules may only be
reproduced in its entirety and without change.

Sira Certification Service
Rake Lane, Eccleston, Chester, CH4 9JN, England

Page 4 of 4
Form 9400 Issuel

Tel:
Fax:
Email:
Web:

+44 (0) 1244 670900
+44 (0) 1244 681330

WNVtJ.siracertification.com


'

HT844 I HT944 User Guide
Professional submersible marine handheld transceivers

ATEX approved Intrinsically Safe
112G Ex ib IIAT4Gb
112GExibiiCT4Gb

Ex ib IIA T4 Gb
Ex ib IICT4 Gb

v07/IO


Common Information (all mode ls)
Certification
Introduction
Packing List
Radio Care
Preparing Your Radio For Use
Battery Care / Information
Using Your Radio
Reception
Transmitting
Channe ls
Functions
The Scan Function
VOX (Voice Operate Transmit}
LCD Indicators
Optional Accessories
Standard Features
Controls
G lossary ofTerms
Troubleshooting

Channel Chart

Page
2

3
3
3
4
5 and 6
7
7
7

8
9
9
9
10
II and 12
12
13 and 14
IS
16
17 to 19

HT844
Technical Specifications

20 and 2 1

HT944
Technical Specifications

22 and 23

Certification
Notes

24
25 and 26


Declaration of Conformity
HT Series ATEX V2 declaration of conformity; Rev 02; 09 April 20 I 0
Entel UK Limited
320 Centennial Avenue
Centennial Park
Elstree
Borehamwood
Hertfordshire
WD6 3TJ
United Kingdom
Declares under our sole responsibility that the product range:
HT844 I HT944 Series Handheld Radio Transceiver HT Series ATEX V2
Conforms to the following standards or other nominative documents:
EN 30 I 178-2 V 1.2.2, EN 60945:2002, EN60950, in accordance with Directive 1999/5/EC.
EN 60079-0:2006, EN 60079-0:2009, EN60079-I I:2007 in accordance with Directive 94/9/EC

Related Certificate:

94/9/EC: Sira I OATEX2066X

Marking:

Ex ib IIAT4 Gb
Ex ib IICT4 Gb

Notified Body No. 0518
Sira Certification, Rake Lane, Chester CH4 9JN, UK
Quality Assurance Notification:
lntertek
Notified Body No. 0359
lntertek, lntertek House, Leatherhead KT22 7SB, UK
R&TTE:
Trac
Notified Body No. 0891

(€

M Austin

;Y/;;

f

QM

-

01Je[ {@L ;:-:D

ISO 9001

Quality Manager

IU:GISTEHED FIIUI

Rev 02; 09 April 20 I0

2


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.
The HT844 and HT944 commercial grade HT Series 2.0 portables utilise the latest intelligent Lithium-len battery
technology and includes the following features: scan, battery life indicator, VOX (voice activated transmit), low
battery indicator, large LCD with back light.
IDIBiliW'"SleF"m!mi!:I!Zi!m

CAT XX Antenna .
User guide CD.

HTX44 Radio.
CNB950E Rechargeable 1800mAh Li-lon battery.
CBH950 Spring loaded belt clip.

Warranty

Cleaning your Radio

The HTX44 comes with a 24 month warranty,
for details see our full terms & conditions.

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 and clean only with a damp
cloth.

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 and grain powders etc)
outside of the radio's ATEX approval rating.
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.

Note: Do not
wash the
transceiver if
you suspect the
waterproofing
seal may be
damaged. Please
return to your
supplier for
inspection I
repair.

-----------------

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.

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


.

--..

..

'

"'

F.ot
.

Attaching I Removing the Battery Pack

[I]

[I]

.

[I]

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).
To remove, unscrew the locking screw
anticlockwise and pull the battery away from the
top of the radio.

Attaching I Removing the Aerial
To attach, car efully align the aerial with the socket.
Screw in the aerial clockwise (taking care not to
cross the thr ead) until it is seated firmly against the
top of the radio.

[i)

To remove, unscrew the aerial anti-clockwise.

Attaching I Removing the Belt Clip

(I)

To attach, slo t the clip onto the slot o n the
back of the battery and slide up until you
hear a "click"

[I)

To remove, pull the tab towards the belt
clip
downwards

slide the belt clip

(rml}

4

.


Introduction

Battery Pad<
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 ooq 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

Your Entel radio is supplied with a high performance
Lithium-ion (Li-lon) 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

Battery Pacl< 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
Do not charge the battery pack in a hazadous
area

Battery Charging
I.

2.
3.

The battery pack includes potentially hazardous
components. Please:

4.

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
Do Not reverse-charge or reverse-connect
the battery
Do Not touch a ruptured or leaking battery

Connect the AC adapter to the charger pod.
The LED status light will illuminate green
indicating ready for charge
Turn the transceiver off
Insert the battery pack into the charger pod,
either with or without the transceiver attached.
The LED status light changes from green to red
and trickle charge begins
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.

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-attach (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.

If liquids from the battery get into your eyes,
immediately:
Wash your eyes out with fresh water and
avoiding rubbing them.
Seek medical treatment

5


Battery Indicator
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: I hour
• I Segment:
20 mins

CHARGE COUNT METER

USED:420

Note: Only genuine Entel batteries should be used.
With Entel batteries customer satisfaction is
assured, as you avoid risks from sub standard,

potentially dangerous battery packs from 3rd party
manufacturers, ensuring it delivers the expected
capacity and endurance.

After 450 cycles, at switch on the radio will emit a
series of long warning beeps that indicate the
number fo times the battery has been charged
exceeds the charge count & the battery needs to be
replaced.

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.

Note: only genuine Entel batteries should be used.
Only genuine batteries offer the battery charge
count feature informing you when the battery is
reaching the end of its useful life. Non ATEX
batteries will not work on ATEX radios ensuring
customer safety.

Battery Communications
Each battery used with your radio has a
microprocessor fitted, which logs the number of
times your battery has been charged.
On a radio with an LCD display, the number of
times the battery has been charged, together with
the remaining charge cycles available, will be shown
during switch on (if not de-activated by your

dealer).

CHARGE COUNT METER

USED:076

LEFT:030

LEFT:374

The warranty on all batteries is the same as the
radio or 450 charge cycles, whichever is the sooner.
After 420 cycles, at switch on the radio will emit a
series of short tones, and on LCD models a waste
bin icon will flash to alert you to the need to buy a
new battery.

6


Turning the Radio On and Off
To turn the radio ON press and hold the red power button on tone is generated after I 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.

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.

.

I.

2.
3.

I.
2.
3.

4.
5.
6.
7.

.

Turn the transceiver on using the power button. During standby the LED indicator will pulse
amber every 3 seconds, verifying its circuitry is functioning correctly. Adjust the volume using the
rotary control on top of the radio. After power-on, the transceiver will always default to the last
channel selected.
Select the desired channel using the [UP/DOWN] buttons. A full listing of channels can be found
on page 17 to 19.
When receiving a signal the LED indicator illuminates green.

Perform steps I through 2 of RECEPTION.
Before transmitting, monitor the channel and make sure it is clear.
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 (I watt) denoted by an L on the LCD,

(available on the HT844 only). Transmitting on I watt prolongs battery life, and should be selected
whenever possible.
When receiving a signal, wait until the signal stops before transmitting. The transceiver cannot
transmit and receive simultaneously.
Press the [PTT] (Push-To-Talk) button to begin your transmission.To confirm transmission is in
progress, the LCD indicator illuminates TX and the LED illuminates red.
Hold the transceiver I inch from your mouth and speak slowly and clearly into the microphone.
When the transmission is finished release the [PTT] button.

7


International (I NT), USA and Canadian (CAN) Modes
The HT844 I 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.

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. A long press will hold the squelch mute open until
pressed again to cancel again to return to squelch mute.

SIMPLEX I DUPLEX CHANNEL USE
Your transceiver has been factory programmed in accordance with FCC (USA), Industry Canada

and 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 set
and whether USA, Canadian (CAN), or International (INT) mode is selected.
Refer to the channel charts listed on pages 17 to 19 of this user manual.
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.

High \ Low Power Channels (HT844 Only)
To toggle the power level from High (4 watts) to Low (I watt) press & hold the MEM button, the
power of the channel will be indicated by an H for High or L for Low on the LCD.

8


The Scan Function
Programming the Scan Function:

6

I. Select the desired channels to be scanned using the A 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 I 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. All channels programmed remain in the transceiver's scan memory, even if the power is
switched off.

Using the Scan Function:

Once a Scan list has been programmed, you can start scanning by pressing the [SCAN]
button. The scan proceeds from the lowest to the highest programmed channel number
and stops on channels when a transmission is received. The transceiver will display the
channel number and alias as it is being scanned.
To stop the scan at any time, press the [SCAN] key again.

VOX (Voice Operated Transmit)
In VOX mode the transceiver will react to your voice, and transmit automatically without you
having to press the PTT button when it receives audio above a selected level. There is always a
slight delay for the electronic switching and consideration will need to be given. To get optimum
performance from the VOX feature you should use a noise cancelling headset or earpiece
microphone (see accessory options).

Using the VOX Feature:
To use the VOX feature, assign it to a button using the Entel Programmer and a
programming lead. Press the assigned button to enable\ disable it. The VOX symbol
displayed on the LCD when the VOX is enabled.

t- ' will be

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). Then
press the PTT to select the level and return to normal radio operation.

9


L

INT

CH 70

DIGITAL SELECTIV
I n d.l
I
1cator

Description

I I

H

High power selected (4 Watts) (HT844 model only).

L

Low power (I Watt).

MEM

'
I

I

I

I

Indicated channel is memorised for scanning.
Voice operated transmit mode enabled.

USA

Indicates the channel set for USA

CAN

Indicates the channel set for Canadian.

INT

Indicates the channel set for International.

..•
[:J

(

i

The Monitor function is enabled .
Battery life indicator.
Indicates keypad is locked, excluding the PTT.

PFL

Either P, F or L are displayed as Private channel number selected.

DUP

Duplex channel selected (not simplex).

10


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).
Ensure you re-fit the accessory cover so as to protect
the socket.

· ;

mains adapter.

I I OV mains adapter.
.

cigarette lighter lead, 12V DC operation.

·,tw=n,r<:i.ln't e speaker microphone.
in-line PTT/microphone and VOX*.
tube earpiece with in-line PTT/microphone.
boom microphone and large in-line PTT andVOX*.
tornbined earpiece microphone with large in-line PTT.
microphone with large in-line PTT.
.earpiece and throat microphone with large in-line PTT.
ear defender headset with boom mic and in line PTT for hard hat and VOX*
le earpiece defender headset with boom mic and in line PTT for hard hat and VOX*.
ble earpiece headband defender headset with boom mic and in line PTT and VOX*.
BNC antenna adapter for external aerial connection.
Replacement high efficiency helical antenna.

II


.....

. ..

..

•

···

EPROGHT

Programming software and lead (Only available to Authorised Dealers)
PTI950
Waterpoof PTI
PTI951E
Waterproof PTI
PTI951 C
Waterproof PTI
*VOX =Voice Operated Transmit (hands free operation)

For complete up to date list of optional accessori

visit: www en tel co.uk

The use of non Entel approved accessories will invalidate your ATEX intrinsically s fe approval. Refer to
certificate Sira IOATEX 2066X for permitted accessories.

Standard Features:
Environmentally protected to IP68 i.e. submersible
to S metres for up to 60 minutes
Robust design, exceeds MIL-STD-81 OC/D/E/F
LCD screen to display channel number and current
settings \ status
1800 mAH Lithium-ion battery for superior operational time.
INT. USA, CAN channels
Full transmit power output 4 Watts (HT844 only). I Watt.
Exceptionally loud and clear audio
Ch I6 shortcut button
Scan, Monitor and MEM button
Automatic power save to further increase operational time
Low battery alert indicates when the battery needs charging

or replacing
Battery charge count to indicate when a battery needs replacing.

Dealer Programmable Features:
Key lock button
VOX (Voice Operated Transmit) Function
Prefixed minimum volume level and fixed bleep level

12