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PDF Content Summary: HT446 V04/06 PMR446 submersible transceiver

OWNERS MANUAL SCMB Submersible Dependable Tough 2CE 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


1.1 INTRODUCTION 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. 1.2 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) 1.3 PACKING LIST The supplied package: HT446 CNB640E CCA230 CBH640 CCA12 Carry strap Owner's manual 4HT446 PMR446 transceiver 1800mAh rechargeable lithium-Ion battery pack Drop in 6 hour trickle charger, 230v Spring loaded belt clip 12v charger lead

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 http://www.entel.co.uk CSA640E Single pod intelligent rapid charger, 110/230v operation CSB640E Six pod intelligent rapid charger, 110/230v operation CCA230 230v drop in trickle charger. (Also available as 110v - CCA110) CCA12 12v drop in trickle charger CNB640E 7.4V 1800mAh rechargeable lithium-Ion battery pack, with rear clip CMP640 Submersible, noise cancelling speaker microphone (heavy duty) CMP1/640 Compact speaker microphone with earpiece jack EA15/640 Covert style ear/microphone with transparent acoustic tube/ PTT EA12/640 D Shaped ear microphone with in-line PTT EPT40/640 Bone conductive earpiece microphone CHP1/640 Single earpiece lightweight headset with in-line PTT (vox) CHP640HD Heavy duty double ear defender for hardhat with PTT (vox) CHP640HS Heavy duty single ear defender for hardhat and PTT (vox) CHP640D Heavy duty double ear defender with headband and PTT (vox) CXR5/640 Skull microphone (vox) CXR16/640 Throat microphone (vox) CFC640 Soft, real leather case with carry strap - blue, red or yelllow CLC640 Heavy duty transparent case with carry strap CLC940 Heavy duty leather case with carry strap EHP640 Covert style earpiece CBH640 Spring loaded rear clip Accessories suitable for vox operation have been marked (vox) 5

1.4.1 ATTACHING AUDIO ACCESSORIES Locate accessory connector cover marked "ACC". Lift cover and rotate (screw) the connector clockwise. 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. SCMB Figure 1. Attaching the accessory connector prior to use Preparation prior to use 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 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! 6

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 To remove rotate the screw anti-clockwise 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. Figure 2. Battery removal / Attachment 7



ENTER 6.BUTTON Used to save your settings. 7.ACCESSORY CONNECTOR Allows you to connect any Entel approved audio accessory to your HT446 radio. 8. LAMP/LOCK BUTTON Used to illuminate display and lock/unlock keypad. 1.6 LCD INDICATORS SCMB Figure 4. LCD indications 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.

VIB Indicates vibrate mode enabled, the transceiver will Vibrate during the initial call. SCMB Scrambler enabled. Feature only available in certain countries CALL Call alert feature. You may select one of 20 individual call tones. 1.7 RECEPTION 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. 101.8 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.

1.9 ADDITIONAL FEATURES The HT446 transceiver incorporates a number of unique features which will enhance the overall performance of your radio system. With the power switched on press the "FCN" function key until the desired function is displayed. The functions are displayed in the following sequence: CTC/DCS CTCSS/DCS sub audio tones CALL Call alert VOX Voice operated transmit VIB Vibrate SCMB Voice Scrambler SCAN Channel scan mode Button bleep SL SQUELCH LEVEL. CTCSS/DCS (CTC/DCS) There are two types of tone offered; CTCSS abbreviated CTC and DCS. Both these tones work in conjunction with the channel to prevent interference from other users who may be working on the same channel. To change the CTC or DCS tone press "FCN" once, the CTC/DCS display will flash. Use the up/down keys to select the CTC/DCS tone you require and press the "ENTER" key to save your setting. DCS tones are located after CTCSS 38. Note : If two groups are communicating within range of each other using the same channel, despite using different tone codes only one group can use the same channel at any one time. When the channel is being used by a different group the green LED will flash, but no speech will be heard from the speaker. If using this feature please ensure that all users in the system have the same tone code programmed. 11

12CALL The call alert feature allows you to send one of 20 distinctive alert tones to another user in your system. To enable the CALL feature press "FCN" twice. CALL will flash on the LCD. As default it is switched off. To switch this feature on press either the UP or DOWN channel button to scroll through the alert tones. Once you select your alert tone press the ENTER key to save. From the front keypad each time you wish to send the CALL tone simply press the CALL button. 1.10 Voice operated transmit (VOX) In VOX mode the transceiver will react to your voice and transmit automatically without you having to press the PTT button. There is always a slight delay for the electronic switching, therefore starting a transmission with an exaggerated length, throwaway, first word is recommended e.g. "H-e-l-l-o Charlie One do you receive, over". To enable the VOX feature press the "FCN" button three times. VOX will flash on the LCD display. As default it is switched off. To switch this feature on press either the UP or down button to scroll through the levels. When the desired level is selected press the ENTER button to confirm. Level 9 is the most sensitive setting and should be used in low ambient noise environments. Level 1 is least sensitive and should be used in a high ambient noise environment. Once this feature is enabled in the menu you can turn it on and off by pressing the VOX button located on the front panel. If you press and hold this button you can change the levels. Note : to get optimum performance from the VOX feature you should use a noise cancelling headset or earpiece microphone (see accessory options marked VOX)

VIBRATE (VIB) There may be occasions where you would want the HT446 to vibrate on receipt of a valid call, or indeed set it up to vibrate in addition to an audible alert. To enable the vibrate feature press "FCN" key four times. VIB and OF (OFF) are displayed on the LCD. This indicates vibrate is switched to off. To switch on press either the UP or DOWN channel buttons then press ENTER to save your setting. Voice scrambler (SCMB) To avoid the potential eavesdropping of other users, HT446 offers a built in voice scrambler. Press "FCN" five times, select ON or OF (OFF) and then press "ENTER" to save the setting. *Due to local regulation, in some countries the scrambler feature may not be available, please check with your dealer prior to purchase. SCAN Scanning allows you to efficiently monitor radio activity. To enable SCAN press the "FCN" button six times. SCAN is displayed on the LCD. As default it is switched off. Press the UP or DOWN buttons to switch on. 1 is normal channel scan 2 is CTCSS/DCS scan. To start scanning, momentarily press the scan button. Channel Scan (1) All channels will be scanned in sequence. If a signal is received the HT446 will stop on the channel. If you wish to skip active channels press either the UP or DOWN keys to resume scanning. Alternatively, press the PTT to reply. If you have programmed any tone codes then the scan will look for those specific tones only. CTCSS/DCS Scan (2) If you selected CTCSS/DCS scan in scan setup then the HT446 will scan the selected channel for any activity on all the CTCSS/DCS tones. 13 With the exception of PTT each time a you press any of HT446 buttons a single beep tone is emitted. This can be disabled should you wish. To disable the beep tone press "FCN" button seven times. As default this feature is set to ON. By pressing the UP or DOWN button you can tun this feature ON or OFF. Press the enter key to store the setting. SQUELCH LEVEL (SL) A squelch circuit allows muting of undesired noise while receiving no signal, and emits audio when receiving signal. If operating HT446 directly next to machinery or computer equipment you may get squelch breakthrough. Either move away from the equipment, or change the squelch level to a lower setting. Note : If using CTCSS or DCS on your HT446 you will not get squelch breakthrough. To change the squelch level press "FCN" eight times. As default the squelch level is set to 5. It can be increased or decreaed by pressing the UP or DOWN buttons. Press the ENTER button to confirm your setting. A key lock feature is available should you wish to lock the keypad. Located under the PTT button there is a X button. Holding this button for just over a second locks the front keypad. When locked the only button that continues to operate is the PTT button. To release the lock simply press the X button. 14Lamp X A momentary press of the X button will illuminate the LCD for approximately 3 seconds. Monitor button <> The monitor button defeats any CTCSS or DCS tone programmed into your HT446. In addition to radio etiquette the monitor facility is used to listen to weak signals. 1.11 SIMPLE MODE We understand that some users would find the commercial grade, submersible construction of HT446 appealing but prefer not to have the feature rich options offered by the HT446. For these users you can set operation mode "B". The "B" version allows you to enable or disable any of the key features, and fix CTCSS/DCS tones per channel. To access B version 1. Hold down the ENTER and UP buttons whilst turning the radio on. Select version B using the UP or DOWN button. Press ENTER to confirm. 2. Then hold down CALL and VOX and switch radio on. From here you can enable or disable any of the features, you can also set the CTCSS or DCS tone per channel. Once finished switch the radio off and on. Those features selected will be fixed. Should you wish to change any of the features fixed simply follow step 2 again. Should you wish to return to mode A you need to follow step 1 to and select mode A. In B version, you are able to disable the monitor button. If you press the "FNC" 9 times, the "nn" symbol is displayed. You can then select this feature on or off. 15 162.0 TRICKLE CHARGER model CCA230 (CCA110 for 110VAC) 1. Connect the CWC640 AC adaptor to the CCA230 charger pod. The LED SCMB status light will illuminate green indicating ready for charge. 2. Turn the transceiver off. 3. Insert the battery pack into the CCA230 pod, either with or without the transceiver attached. The LED status light changes from green to RED and 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. Note : The CWC640 AC adaptor can be replaced by the included CMC640 12v charger cable. Charge time remains at 6 hours. SCMB DC12V Figure 5. CCA230 Charger pod 2.1 OPTIONAL RAPID CHARGER model CSA640E 1. Connect the CSA640E to a mains supply (110 to 230V). When switching on, the LED flashes orange briefly to confirm self-diagnostic test complete. 110-230VAC Figure 5-1. OPTIONAL CSA640E Rapid charger2.1 CSA640E RAPID CHARGER Continued: 2. Turn the transceiver off. 3. Insert the battery pack into the CSA640E charger, either with or without the transceiver attached. The LED will illuminate red to indicate rapid charge in progress. 4. Charge time for a fully discharged battery pack will take up to 120 minutes. On completion the LED turns green. 2.2 BATTERY INDICATOR For your safety and convenience your transceiver continually monitors the battery pack and gives an indication on the LCD: 3 Segments : 24 hours remaining 2 Segments : 1 hour remaining 1 Segment : 30 mins remaining Figure 6. Battery Indicator 17 2.3 BATTERY SAFETY The battery pack of your transceiver contains lithium-Ion cells. This type of battery stores a charge powerful enough to be dangerous if misused or abused, especially when removed from the transceiver. Please observe the following precautions: DO NOT SHORT BATTERY PACK TERMINALS Shorting the terminals that power the transceiver can cause sparks, severe over heating, burns, and battery cell damage. If the short is of sufficient duration, it is possible to melt the battery components. Do not place a loose battery pack on or near a metal surface or objects such as paper clips, keys, tools etc. When the battery pack is installed on the transceiver, the terminals that transfer current to the transceiver are not exposed. The terminals that are exposed on the battery pack when it is mounted on the transceiver are charging terminals only and do not constitute a hazard. DO NOT INCINERATE Do not dispose of your CNB640 battery in a fire or incinerator. The heat of fire may cause battery cells to explode and/or release dangerous gases. DISPOSE OF BATTERY PACKS PROPERLY 18Lithium-Ion battery packs must be recycled or disposed of properly. For requirements in your area, check with the dealer from whom you purchased your transceiver. 2.4 TROUBLE SHOOTING GUIDE PROBLEM PROBABLE CAUSE SOLUTION

Radio will not power on Battery needs charging Battery is exhausted Recharge battery pack Replace the battery pack Radio will not talk with others Radios may be on different channel or tone code Check that all radios in same group are using the same channel and tone Hearing others conversations Sharing same channel and tones as other users Select a different channel and tone Control buttons not functioning Keylock activated Mode B Selected Turn keylock off Enable mode A Turn keylock off Enable mode A Radio transmits without pressing PTT button. Buttons seem to work intermittently Vox has been enabled Press assigned vox button to switch vox off Unintelligible Audio signal received or transmitted Voice scrambler not enabled on receiving HT446 Ensure scrambler either enabled or disabled to be compatible with other radios Ensure scrambler either enabled or disabled to be compatible with other radios Status LED flashes green but no audio received The channel is active but your radio is programmed with a different tone code Press monitor button to establish if the channel activity is from your group. If so change tone code to match the other radios in your group Press monitor button to establish if the channel activity is from your group. If so change tone code to match the other radios in your group Limited Talk Range Using the radio in a vehicle, basement, steel structure or concrete building reduces range Where possible use your radio outside these areas LED on charger does not illuminate when charging Defective battery Dirty Terminal contact on charger Contact your dealer Clean contacts with dry clean cloth Contact your dealer Clean contacts with dry clean cloth Accessory does not work with radio Accessory plug not seating correctly in accessory socket Incompatible accessory being used Check connection into accessory socket Ensure only genuine approved Entel accessory used Replace faulty accessory Check connection into accessory socket Ensure only genuine approved Entel accessory used Replace faulty accessory 19

20 2.5 SPECIFICATION (General, receive and transmit) Performance specifications are nominal, unless otherwise indicated, and are subject to change without notice. GENERAL

Number of Channels Frequency Range Channel Spacing Channel Increments Size (WxDxH) Weight (With Battery and Antenna) Battery Voltage Current Drain Squelched Rated Audio Transmit-0.5Watt Antenna impedance Speaker impedance Frequency Stability Operation Temperature 8ch 446.00625MHz ~ 446.09375MHz 12.5KHz 6.25KHz 59 x 33 x 130mm 296g 7.4V, Nominal 60mA, Max. 160mA, Max. 350mA, Max. 50 ohms 8 ohms 2.5ppm Max. -20 to +55

RECEIVER Sensitivity (12dB SINAD) >0.35uV Max. Squelch Sensitivity >User adjustable Adjacent Channel Selectivity (ETS)-Wide Band 70dB Min. Spurious Rejection (ETS) 70dB Min. Intermodulation (ETS) 65dB Min. Hum and Noise Ratio 40dB Min. Rated Audio Output at 5% T.H.D.(1KHz) 500mW Typical TRANSMITTER RF Output Power-(ERP) 500mW Spurious/Harmonic Emissions -36dBm<1GHz -30dBm>1GHz Modulation- Narrow Band 2.5KHz FM Hum and Noise 38dB Typical Audio Distortion 5% Max. Adjacent Channel Power-Lo Power 60dB 21

222.6 NOTES Use this page to record important information, such as the serial number of your HT446 transceiver, and any of the frequencies and sub-tones programmed by your dealer. 23 <Intended Country of Use> □GER □AUT □GBR □IRL □FRA □NED □BEL □LUX □ESP □POR □ITA □NOR □GRE □□SUI □SWE CZ □DEN □FIN Registered Community Design Application 000044375 U.S. Design Patent Pending No. 29/183,829 Copyright and Unregistered Design Right Entel UK 2003. All rights reserved Copyright Entel UK Ltd, London







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