Kenwood TM-741A Bedienungsanleitung

7\mOOa144/220 MHz FM MULTI BANDERTM-641A144/440 MHz FM MULTI BANDERTM-741A144/430 MHz FM MULTI BANDERTM-741A144/430 MHz FM MULTI BANDERTM-741EINSTRUCT

3-2-2. Mobile InstallationsBattery ConnectionsCautions1. Before installing the power cable, be sure to remove the negative lead from the battery for s

3-2-3. Fixed StationA regulated DC power supply (13.8 VDC capable of supplying at least 12 Amperes) is required. The PS-430 and the PS-50 are recommen

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CONTROL SEITECT keys (Press) / Current Operating Band indicatorsThese keys are used to select the key operating band.(To change the transmission band,

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I Function key Assignments Press the F key for longer than 1 second so that the key indicator begins to flash, then press the key below.KeyFunctionRef

KeyFunctionRefer toVFO+Power ONVFO reset of all bandsP.30 4-4-2VFO-i-BANDSEL-I- Power ONVFO reset of a bandP.30 4-4-2MHz+Power ONAll lock on or off du

(DPF(Programmable Function) key This key can be programmed to perform any of the following functions: BAND SEL (*^) key (Initial setting from the fact

►Microphone terminal connection4-1-3. Display Panel(Front view)Receive audio for the selected TX band(100mV/l0kn)Receive Audio Output Band Selection (

&Ts 8.8:8.8s Шв88:8.8.1 !Ts 88:8.8.*88 'Ш“!!1Ч“Ч!Ш SI *88 |ИРдаччч<Ш SI *88 в»'Ш!Ш|Ш! SI—+REVCTCSS CO DTSS ^SO.— + REVCTCSS CO DTSS

Thank you for purchasing this new transceiver.IMPORTANT:Please read this instruction manual carefully before placing your transceiver in service

4-1-4. Rear Panel and Side CaseExample144MHz.TM-741A/741E-440/430MHZTM-641A220MHzPJ 144MHz TM-741A/741E440/430MHZTM-641A220MHz144MHz bandw(DANTENNA c

Fig.l2. Turn on the Power Supply, then turn on the transceiver’s POWER switch. The display should light after 1 second. Fig.l shows examples of frequ

7. Turn off the transceiver’s Power switch before you turn off the power supply, or in a vehicle, before you stop the engine.4-2-2. Frequency Selecti

The chart below illustrates the way the displayed frequency will change when you change from one step size to another.5,10,15,20 to 12.5,2512.5,25 to

To clear both programmed limits simultaneously, turn the Power off ,then;ALL BAND modePress and hold the VFO key, then turn the Power switch on (

1. Press the F key for longer than 1 second. The F indicator will begin to flash.Press the BAND SEL key for the bands you wish to turn on/off. A Cale

The ALT system operates similar to an AFC (Automatic Frequency Control) system. This system is useful when the frequency of either station starts to d

4-3. TRANSMITTER OPERATION4-3-1. TransmissionCAUTIONS1. Ensure that an antenna with a low standing wave ratio (less than 1.5 SWR) is attached to the a

The transceiver has a time-out timer function to prevent possible problems caused by continuous transmission. This function forcibly stops continuous

4-4. MEMORY4-4-1. Microprocessor Memory Back-upA lithium battery is contained in this transceiver fo retain memory. Turning off the POWER switch, disc

CONTENTS1. BEFORE OPERATION ... 52. SPECIFICATIONS and ACCESSORIES ... 63. INSTALLATION INSTRUCTIO

VFO RESETThe microprocessor’s VFO memory (without memory channels 1~100, CALL channel, and paging memory channel) will be initialized.ALL BAND mode1.

1. Press the VFO key to select the VFO mode.2. Select the desired receiver frequency, tone information etc. (For example 443.600MHz)3. Press the F key

’I0H5,.,unnnIHi.uuu9. To check the transmit frequency press the REV key. The transmit frequency will appear in the display.#Call Channel1. Press the V

3. Press the band CONT SEL key for linking with the high-order bank.03IDHS, ,unnn ™ D lun I'ii.uuu H'iJ. iiu--------- i'i-------------

•Memory ConsolidationIt is possible to rearrange the memory channels on the transceiver to optimize memory scan operations. This is an advantage espec

6. To return to the normal frequency display you can wait 10 seconds or press any front panel key.4-4-8. Clearing Memory•Clearing a memory channel1.

4-5. SCANEach band can be scanned independently. For proper scan operation the squelch must be adjusted to the threshold point. Scan can not be used i

NOTEWith both the CTCSS and the DTSS are turned on scanning will stop when the proper CTCSS tone is received. Squelch will open only if the DTSS signa

The lower- and upper-limit frequencies of a program scan are set in advance for each band.•Lower and the Upper Scan Limits Entry Display the lower fre

4-5-7. CALL ScanCALL / VFO ScanPress the CALL key for longer than 1 second in the VFO mode to start alternate scanning of the VFO frequency shown on t

4-7 DTSS ... 44DTSS Code ... 44DTSS Code Se

This function allows you to specify which memorychannels you wish to skip during memory channel scan.1. Press the MR key to select the memory channel

4-6. REPEATER OPERATION4-6-1. Transmitter OffsetAll amateur radio repeaters use a separate receive and transmit frequency. The receive fre

4-6-3. Tone and CTCSS Operation Some repeaters require the use of a control signal to activate the repeater. Several different methods are currently i

Some repeaters offer a service known as autopatch. This feature allows you to dial a telephone number from your transceiver and carry out a telephone

4-7. DTSS (Dual Tone Squelch System)(Requires optional DTU-2)This function allows the squelch to be turned on in the receive mode on reception of a th

NOTES1. If a key other than the DTSS key is pressed during operation, code selection mode is canceled.2. If no action is taken for longer than 10 seco

4-8 PAGING (Requires optional DTU-2)The function is useful for net operations or for selectively calling an individual calling.Example: When member 2

Seven different paging code memories have been priovided.4-8-1. Paging Code MemoriesPaging Code Memory No.UsageAStores your own station code.0Aut

Code Setting? ^DTSS^ ^DTSS^-1^ (^DTSS^/ nu r _ ^^nnnniu“j f%,r HHu.uuuPR.Tuning controlEnd of code settingTuning control1 n u r n t > t lun

For example, the following groups communicate with each other.Predetermined frequency 144.660MHzGroup code Member 1 Member 2 Member 3 Member 4789

1. BEFORE OPERATIONTo prevent electric shock, fire and other injury, please note the following:Never remove the case unless instructed to do in

Stand by with group code.If the calling station transmits the group code, the group code and the Paging Mode Memory Channel Number that contains that

4-9. TONE ALERT SYSTEMThe Tone Alert function will provide an audible alarm to signal when someone is transmitting on the frequency you are monitoring

Alarm Sound SelectionThe transceiver provides three different Alarm sound.1. Press the CONT SEL key for the band to select the Alert tone.2. Turn the

djd d,. . O fl o n HHu.uuuSelect the desired value (D1 to D4) with the tuning control or the UP/DWN key on the microphone.If, after 10 seconds, no key

4-14. KEY LOCKSThere are three types of lock function.® Microphone key lockWhen the switch on the rear of the microphone is set to the LOCK position,

i5. CLOCK5-1. CURRENT TIME AND DATEThere is a Backup Switch to retain clock memory. If you set the switch ON ,turning off the POWER switch, disconnect

5-2. OTHER CLOCK FUNCTIONSThe transceiver has the following clock functions, as well as current time and calender display.1. STOPWATCH2. TIME ON SWITC

5-2-2 Time-ON/Time-OFF programming1. In the clock mode, press and hold the F key, then press the CONT SEL key. The ON indicator will flash.dj t CDI n

5-3 CLOCK POSITION ON THE FREOUENCY DISPLAYThe transceiver is capable displayed the clock in either the normal clock position or in the frequency disp

When the F key is pressed for longer than 1 second, then the BAND SEL key for the last frequency band is pressed, the STOP WATCH will turn on or off.C

2. SPECIFICATIONS and ACCESSORIES2-1. SPECIFICATIONS144 MHz Band220 MHz Band440/430 MHz BandGENERALFrequency range MHzU.S. A and Canada 144 ~148220 ~

5-3-5. Clock Operation in the Frequency Display60

6. MAINTENANCE•GENERAL INFORMATION Your transceiver has been factory aligned and tested to specification before shipment. Under normal circumstances t

•IN CASE OF DIFFICULTYThe problems described in this table are failures caused, in general, by improper operation or connection of the transceiver, no

Some dial frequency relationships may result in internal heterodyne tones being generated by the TM-641A/ 741A/ 741E. This is not a defect.The followi

7. OPTIONAL ACCESSORIESCTCSS UNIT DTMF UNITTSU-7 DTU-27-1. ACCESSORIESMOBILE MOUNT BRACKETMB-11DE'I ACHABLE FRONT PANEL KITPG-4KDETACHABLE FRON

INSTALLING OPTIONAL ACCESSORIESCAUTIONBefore installation, be sure to disconnect the DC power supply, or damage may occur to the equipment.7-2. CTCSS

With the optional DTU-2 DTMF unit is installed, the DTSS key functions the signaling mode selection key. We recommend that to perform the microphone

7-3-3. DTMF MemoryWith the optional DTMF unit DTU-2, DTMF telephone numbers can be stored into memory. Storing the DTMF codes 1. Press and hold the F

7-4. PANEL SEPARATION KIT (PG-4K/4L)PG-4KPowerSupplyPG-4LDC Cable (6m) Speaker Cable (5m)1. Slide the release button on the front panel to the right.

4. Remove the cover on the front of the PG-4K/4L front panel, and pass the microphone cable and front panel cable through the opening.(Fig.4)Cord Bus

144 MHz Band220 MHz Band440/430 MHz BandRCircuitryDouble conversion superheterodyneEIntermediate frequency lst/2nd10.7 MHz/455 kHz30.825 MHz/455 kHz21

7-5. BRACKETLoosen the bracket screws and put the two plates at right angles. Attach the front panel unit to the bracket using the three supplied scre

7-6 BAND UNITSAny of the following optional band units may be installed in the TM-741A/741E.The same instructions apply for the Tri-Bander as for the

Remove the cooling fan assembly.Disconnect the conector.Remove the 4 screws securing the fan case. Remove the fan case.0REmove the spacer.Remove the 2

(6). Tighten the new band unit.® Tighten the 2 side screws to secure the new band unit in place.d) Insert the 2 long screws.(3) Tighten the 2 long scr

7-6-2. NotesAfter installation the following parts will be remained. Terminal plate 2 screws for bracket0A bracketIf you have some other number

3. To activate the optional band unit, reset the memory for the band.1. Turn the POWER switch OFF.2. Press and hold the F key and the BAND SEL key fo

4-2-7.Attenuator ON/OFF (With the UT-28S/50S)See page 25.4-2-8.ALT (Automatic Lock Tuning)(With the UT-1200)See page 26.4-3-4. Bandwidth Selection (Wi

UT-28SUT-50SUT-1200TRANSMITTEROutputPowa"HISOWlowMID low -LOWApprox. 5WIWModulaticnReactance modulationSpurious radiationLess than — 60dB(iSi)Les

3. INSTALLATION INSTRUCTIONS3-1. INSTALLATION3-1-1. Installing the Microphone and Setting the Clock Backup SwitchBefore installing be sure to turn of

3-1-2. Mounting BracketNotes1. When installing the transceiver in a vehicle consider ease of operation and safety when selecting the location for the