Entel HT446 User manual

HT446
PMR446 submersible transceiver
OWNERS MANUAL
V04/06
Submersible
Dependable
Tough
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CE COMPLIANCE STATEMENT
The HT446 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:
4 Elstree Gate, Elstree Way
Borehamwood, Herts
WD6 1JD
United Kingdom
Declare under our sole responsibility that the product:-
HT446 series UHF PMR446 handheld transceiver
Serial Number
To which this declaration relates, is in accordance with directive 95/5/EC and
conforms to the following standard or other nominative documents:-
EN 300 296 (March 2001) EN 301 489-1 V1.5.1:2003, EN 60065:2002
Following provisions of the R&TTE directive.
M. Austin.
Quality Manager

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1.1 INTRODUCTION
1.2 GENERAL FEATURES
1.3 PACKING LIST
1.4 OPTIONAL ACCESSORIES
1.4.1 ATTACHING AUDIO ACCESSORIES
1.5 CONTROLS AND INDICATORS
1.6 LCD INDICATORS
1.7 RECEPTION
1.8 TRANSMISSION
1.9 ADDITIONAL FEATURES
1.10 VOICE OPERATED TRANSMIT (VOX)
1.11 SIMPLE MODE (B version)
2.0 INCLUDED TRICKLE CHARGER model CCA230
2.1 OPTIONAL CHARGER model CSA640E
2.2 BATTERY INDICATOR
2.3 BATTERY SAFETY
2.4 TROUBLE SHOOTING GUIDE
2.5 SPECIFICATION (General, receive and transmit)
2.6 NOTES
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INDEX

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The Entel HT446 is a professional PMR446 handheld transceiver that
operates on the licence exempt UHF band. The HT446 has 8 radio
channels (maximum available on PMR446). To minimise interference
each channel may be used with any of 38 CTCSS or 83 DCS tones.
This makes over 900 channel combinations available to the user.
1.1 INTRODUCTION
The supplied package:
HT446
CNB640E
CCA230
CBH640
CCA12
Carry strap
Owner's manual
HT446 PMR446 transceiver
1800mAh rechargeable lithium-Ion battery pack
Drop in 6 hour trickle charger, 230v
Spring loaded belt clip
12v charger lead
1.3 PACKING LIST
1.2 GENERAL FEATURES
1. Heavy duty, commercial grade construction
2. Submersible to 1 metre (IP67)
3. Lithium-Ion battery technology
4. 24 hour battery endurance (5%TX/5%RX/90%STDBY)
5. VOX (Voice operated transmit) - 9 levels
6. Battery indicator, with battery low warning bleep
7. Call feature with 20 different alert tones
8. Vibrate
9. Squelch adjustment (used to increase range or remove interference)
10. Voice scrambler. (Not available in some countries)

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1.4 OPTIONAL ACCESSORIES
The HT446 is supported by a wide range of essential accessories.
For an up to date list visit our web site at www.entel.co.uk
Accessories suitable for vox operation have been marked (vox)
CSA640E
CSB640E
CCA230
CCA12
CNB640E
CMP640
CMP1/640
EA15/640
EA12/640
EPT40/640
CHP1/640
CHP640HD
CHP640HS
CHP640D
CXR5/640
CXR16/640
CFC640
CLC640
CLC940
EHP640
CBH640
Single pod intelligent rapid charger, 110/230v operation
Six pod intelligent rapid charger, 110/230v operation
230v drop in trickle charger. (Also available as 110v - CCA110)
12v drop in trickle charger
7.4V 1800mAh rechargeable lithium-Ion battery pack, with rear clip
Submersible, noise cancelling speaker microphone (heavy duty)
Compact speaker microphone with earpiece jack
Covert style ear/microphone with transparent acoustic tube/ PTT
D Shaped ear microphone with in-line PTT
Bone conductive earpiece microphone
Single earpiece lightweight headset with in-line PTT (vox)
Heavy duty double ear defender for hardhat with PTT (vox)
Heavy duty single ear defender for hardhat and PTT (vox)
Heavy duty double ear defender with headband and PTT (vox)
Skull microphone (vox)
Throat microphone (vox)
Soft, real leather case with carry strap - blue, red or yelllow
Heavy duty transparent case with carry strap
Heavy duty leather case with carry strap
Covert style earpiece
Spring loaded rear clip

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Locate accessory connector cover marked "ACC". Lift cover and
rotate (screw) the connector clockwise.
1.4.1 ATTACHING AUDIO ACCESSORIES
1. Attaching the belt clip. Align the belt clip with the plastic slots on the
rear of the battery pack. Slide the belt clip onto the battery pack, pushing
firmly until a click is heard.
2. BATTERY REMOVAL / ATTACHMENT
Preparation prior to use
1. Turn the transceiver off.
2. Using a coin, rotate the battery screw anti-clockwise 2 or 3 turns.
**Ensure that you do not hold the battery pack when
unscrewing the release screw!
Figure 1. Attaching the accessory connector prior to use
Note: The accessory socket is waterproof
without the ACC cover in place. However,
when not using an audio accessory we
strongly advise keeping the ACC cover
firmly pressed in its recess to prevent
foreign objects from getting into the socket.
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Figure 2.
Battery removal / Attachment
To remove rotate
the screw
anti-clockwise
3. To attach the battery: firstly,
place the battery against the
bottom of the radio, then
hinge the battery into place
against the transceiver. Rotate
the battery locking screw
clockwise taking care not to
over tighten the screw.
1.5 CONTROLS AND INDICATORS
POWER SWITCH / VOLUME CONTROL
Rotate clockwise to power the transceiver on and increase
received volume. Rotate anticlockwise to reduce received
volume and switch off.
PUSH TO TALK SWITCH
Press and hold to transmit, release to receive.
UP/DOWN button
Select the desired channel by pressing the UP/DOWN buttons.
For fast channel selection hold down for more than 1 second.
MONITOR button
To monitor the channel press and hold the monitor button for one
second . You will hear a rushing noise & any other channel users, to
return to normal mode press and hold the monitor button again.
BATTERY PACK
A high performance rechargeable lithium-lon battery pack is supplied
as standard with your radio.
1.
2.
3.
4.
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Figure 3. CONTROLS & INDICATORS
POWER SWITCH
PTT
UP/DOWN
Enter
MON
LAMP/LOCK
BATTERY PACK
ACCESSORY CONNECTOR
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CHANNEL DISPLAY
The far right (largest) number indicates the operating channel (1-8).
Appears when the key bleep sound is turned on.
CTC/DCS
Indicates if CTCSS or DCS interference suppression tones are enabled.
The CTCSS or DCS tone number is indicated in the botom left of the LCD.
SCAN Appears when scan is activated.
VOX Voice operated mode enabled.
The keypad is locked.
The status of the lithium-lon battery of your transceiver is continually
monitored and displayed for your convenience and safety.
1.6 LCD INDICATORS
Figure 4. LCD indications
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ENTER BUTTON
Used to save your settings.
ACCESSORY CONNECTOR
Allows you to connect any Entel approved audio accessory to your HT446
radio.
LAMP/LOCK BUTTON
Used to illuminate display and lock/unlock keypad.
6.
7.
8.

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1.8 TRANSMISSION
1. Perform steps 1 through 3 of RECEPTION.
2. Before transmitting, monitor the channel and make sure it is clear.
3. When receiving a signal, wait until the signal stops before transmitting.
The transceiver cannot transmit and receive simultaneously.
4. Press the [PTT] (push-to-talk) switch to begin your transmission.
To confirm transmission in progress the LED illuminates RED.
5. Holding the transceiver 2 inches from your mouth speak slowly and
clearly into the microphone.
6. When the transmission is finished, release the [PTT] switch.
1. Turn the transceiver on by rotating the volume control in a clockwise
direction. A power on tone is generated after 1 second to indicate the
transceiver has passed its self-diagnostic test. Select the desired
receive volume level by further rotating the control clockwise.
After power on, the transceiver will always default to the last channel
selected.
2. Select the desired channel using the [UP/DOWN] buttons.
3. When receiving a signal the LED indicator illuminates green.
1.7 RECEPTION
VIB
Indicates vibrate mode enabled, the transceiver will Vibrate during the
initial call.
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Scrambler enabled. Feature only available in certain countries
CALL
Call alert feature. You may select one of 20 individual call tones.