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TX3440

REMOTE MIC

I N S T R U C T I O N M A N U A L

UHF RADIO

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Содержание TX3440

Страница 1: ...TX3440 REMOTE MIC I N S T R U C T I O N M A N U A L UHF RADIO ...

Страница 2: ...for telemetry only applications and have prohibited the transmission of speech on these channels Consequently the TX3440 has a transmit inhibit applied to channels 22 and 23 FEATURES Controller Microphone Complete control of radio from microphone simplifies installation Microprocessor Controlled Frequency Synthesiser Allows user programmable control of scanning channel memories and selected featur...

Страница 3: ...identification Quiet Mode Selectable on individual channels Quiet mode prevents incoming signals from being heard on selected channels unless preceded by your Selcall code CTCSS A built in Continuous Tone Coded Squelch System option provides quiet channel operation Overvoltage Protection Special overvoltage detection circuitry protects the radio and warns of excessive voltage conditions by flashin...

Страница 4: ...re are no signals present The TX3440 features a preset Squelch system The Squelch sensitivity has been factory set to provide optimum performance in most environments however the sensitivity can be altered by the user if required to suit varying environmental situations The Squelch can be opened or closed with the SQL key When the Squelch is open the receiver s background noise can be heard and BU...

Страница 5: ...l is present When the transmission ends the channel becomes quiet again Transmissions that do not use the correct tone will not be heard The TX3440 allows CTCSS to be enabled or disabled on individual channels Note The CTCSS tone you select will be used for all CTCSS enabled channels in your radio Monitoring the Channel It is useful to be able to temporarily open your radio s Squelch to allow you ...

Страница 6: ...radio is not already scanning If it is briefly press the SCAN key to cancel the scan function 2 Ensure you have the required scan group pre selected 3 Select the required channel by pressing either of the or keys If M is visible to the right of the channel number the selected channel is already in the scan memory To remove the selected channel press and hold the SCAN key for a few seconds until a ...

Страница 7: ...ou press the SCAN key or there is only one channel programmed and it is the same as the Priority Channel a low beep will be heard and the command will be ignored When scanning the TX3440 scans all the channels programmed into the Group Scan memory with the Priority Channel being scanned after every fourth channel retailer programmable option if you require different timing for your priority channe...

Страница 8: ...equently called Selcall numbers in memory and each number can be labelled with a 5 letter name for easy identification Selcall Identification Number Your TX3440 is factory programmed with its own unique Selcall Identification Number Ident This number identifies your radio from others in your area Your radio s own Selcall Ident will be displayed for a few seconds directly beneath the channel displa...

Страница 9: ...t and the radio will return to normal mode To exit CALL TO mode without sending the Selcall briefly press the CALL button Call Acknowledge If your Selcall transmission is successful the radio you called should respond with an acknowledge signal usually two quick beeps This will confirm to you that the radio you called is now alerting its user to your signal Storing Selcall Idents Your TX3440 is fi...

Страница 10: ... are available A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ SPACE 0 1 2 3 4 5 6 7 8 9 b Briefly press the PRI key again to select the next character position c Repeat steps a and b to enter all 5 characters as required d Now press and hold the PRI key The entire ALPHA name will flash for a few seconds then the radio will beep as the name is stored Repeat the procedure to add ALPHA names t...

Страница 11: ...ng in the QUIET Mode Deactivating QUIET Mode 1 Select any channel that has been tagged for quiet operation Q and QUIET will be displayed 2 Briefly press the F key followed by the QUIET key QUIET will disappear from the display and all channels that were tagged for quiet operation will now operate normally again Receiving Signals in QUIET Mode If a normal signal is received on a QUIET channel the c...

Страница 12: ...ceived To achieve this the 10 radios you are calling must be programmed with sequentially numbered Selcall Idents e g 12330 12331 12332 12333 12339 Transmitting the Selcall Ident 12331 will only activate the alarm in the radio with the Selcall Ident of 12331 Transmitting 1233A will activate the alarms in all radios with Idents 12330 through 12339 a total of 10 radios If the radios in your fleet do...

Страница 13: ...istening channel is turned OFF 4 Program a desired frequency into the selected listening channel as described in the next section 5 Repeat steps 3 4 to activate all the desired listening channels 6 Once you have enabled and programmed your additional listening channels switch the radio OFF to end the initial programming operation When you switch it ON again normal operation will be restored and on...

Страница 14: ...hannel frequency too SEEK MODE During programming a listening channel the actual frequency to program may not be known in advance Seek mode is a unique feature that allows you to continuously scan a band of frequencies for activity and assign the frequency of interest to the current listening channel USING SEEK MODE Before using Seek mode you should 1 Select your preferred frequency step 12 5 kHz ...

Страница 15: ...cy display reads OFF 3 Press and hold the SCAN key until a low beep is heard The selected seek limit point is now erased USING THE FREQUENCY LIMITS TO SCAN Once the seek mode frequency limits are set the frequency band is effectively split into three segments TIP It is easiest to picture the limit points as the first limit being lower in frequency than the second but this is not really necessary E...

Страница 16: ... weakest signals to be received while still keeping the radio quiet between transmissions In city locations a higher setting might be needed to ensure the squelch remains closed when subjected to the higher interference levels often encountered in high density areas The TX3440 has ten 10 preset Squelch sensitivity settings labelled SQL 0 to SQL 9 that can be selected using the Menu function The mi...

Страница 17: ...SS frequency instead of the tone number briefly press the PRI key The CTCSS frequency in Hz will be displayed Briefly press the PRI key again to return to the tone number 4 To turn CTCSS tones OFF select CTCoF 5 Press and hold the MENU key until the radio beeps to store the setting Backlighting Backlighting can be set to ON or OFF to satisfy personal preference 1 Press and hold the MENU key until ...

Страница 18: ...e is supplied to allow more remote mounting of the TX3440 main unit Antenna Installation It is essential to select a good quality high efficiency 477 MHz antenna A poor quality antenna or one not designed for the specific frequency band you are using will give very poor performance GME have a wide range of suitable 477 MHz UHF CB antennas to suit most installations and applications We recommend co...

Страница 19: ...ME retailer for details DC POWER CONNECTION The TX3440 is designed for 13 8 Volts DC negative earth installations only i e where the negative terminal of the battery is connected to the chassis or frame of the vehicle There are two recommended methods of installation Radio remains ON when the ignition switch is OFF Connect the radio s negative black lead to the vehicle s chassis or if preferred di...

Страница 20: ... the high voltage warning has been triggered and you have fixed the source of the problem you will need to switch the TX3440 OFF then ON again to reset it The power source must not exceed 30 Volts ANTENNA CONNECTION GME supply a wide range of mobile and base station antennas designed specifically for UHF CB communications The antennas are fitted with a PL259 coaxial plug suitable for connection to...

Страница 21: ... 131 8 38 31 192 8 5 4 77 0 22 21 136 5 39 196 6 6 5 79 7 23 22 141 3 40 199 5 7 6 82 5 24 23 146 2 41 32 203 5 8 7 85 4 25 24 151 4 42 206 5 9 8 88 5 26 25 156 7 43 33 210 7 10 9 91 5 27 159 8 44 34 218 1 11 10 94 8 28 26 162 2 45 35 225 7 12 11 97 4 29 165 5 46 229 1 13 12 100 0 30 27 167 9 47 36 233 6 14 13 103 5 31 171 3 48 37 241 8 15 14 107 2 32 28 173 8 49 38 250 3 16 15 110 9 33 177 3 50 2...

Страница 22: ...476 600 28 477 100 9 476 625 29 477 125 10 476 650 30 477 150 11 476 675 31 477 175 12 476 700 32 477 200 13 476 725 33 477 225 14 476 750 34 477 250 15 476 775 35 477 275 16 476 990 36 477 300 17 476 825 37 477 325 18 476 850 38 477 350 19 476 875 39 477 375 20 476 900 40 477 400 Emergency use only Officially Designated Call Channel Telemetry Selcall use only Voice Transmission is inhibited as re...

Страница 23: ...ction Shunt Diode Frequency Stability 5 PPM Selcall Tone Length 40 ms Transmitter RF Output 5 0 Watts max Frequency Transients during switching 3 kHz Modulation FM Maximum Deviation 5 kHz at 20 dB limiting Spurious Emissions 70 dBc Transmit Frequency Response 6 dB per octave 300 Hz to 3 kHz 1 3 dB Audio Signal to Noise 45 dB Current Consumption 1 5 Amps with 50 Ohm termination Receiver Circuit Typ...

Страница 24: ...enna which has been incorrectly installed resulting in damage to the radio s output circuit c Effects of water or moisture penetration d Non factory modifications Procedure to be followed by claimant In the event of a defect occurring during the warranty period the original purchaser may return the defective unit along with suitable proof of purchase date i e receipt docket credit card slip etc an...

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