Kenwood TS-480HX Specialized Communications, Radio Teletype Rtty, A./ Canada ARU Region

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SPECIALIZED COMMUNICATIONS

RADIO TELETYPE (RTTY)

RTTY is the data communications mode with the longest history. It was originally designed for use with mechanical teletypewriters which were often used before personal computers became common. Now you can easily start operating RTTY with a personal computer and MCP. Unlike Packet, each time you type a letter, it is transmitted over the air. What you typed is transmitted and displayed on the computer screen of the recipient.

RTTY operation uses frequency shift keying (FSK) and the 5-bit Baudot code or the 7-bit ASCII code to transmit information.

For the cable connections, refer to “RTTY OPERATION” {page 77}.

For further information, consult reference books about Amateur Radio.

1Access Menu No. 41 and select an FSK shift.

FSK shift is the difference in frequencies between a mark and a space.

The 170 Hz shift (default) is normally used on the Amateur bands for the RTTY.

2Access Menu No. 42 and select a key-down polarity.

Select “oFF” (default) to transmit a mark when keying down or “on” to transmit a space.

3Access Menu No. 43 and select “2175” (high tone) or “1275” (low tone) for mark.

High tone (default) is commonly used nowadays.

4Select an operating frequency.

5Press [MODE] to select FSK mode {page 19}.

If necessary, access Menu No. 47 to configure the appropriate audio output level for your MCP. The audio output level of ANO (REMOTE connector/ pin 5) changes

{page 78}. The AF control cannot be used to adjust the audio level for your MCP.

7Follow the instructions provided with your MCP and enter a command from your computer to transmit.

The LED changes from green (RX) to red (TX).

8Begin sending data from your computer.

Press [PWR/ 4/ TX MONI] (1 s) to monitor your signals. Press [PWR/ 4/ TX MONI] (1 s) again to quit this function.

9When finished transmitting, enter a command from your computer to return to reception mode.

The LED changes from red (TX) to green (RX).

The following frequencies (measured in kHz) commonly used for RTTY operation:

U.S.A./ Canada

ARU Region 1

(Europe/ Africa)

 

 

 

 

 

 

1800

~ 1840

1838

~ 1842

 

 

 

3605 ~ 3645 (DX: 3590)

3580

~ 3620

 

 

 

7080 ~ 7100 (DX: 7040)

7035

~ 7045

 

 

 

 

10140

~ 10150

10140

~ 10150

 

 

14070 ~ 14099.5

14080 ~ 14099.5

 

 

 

 

18100

~ 18110

18101

~ 18109

 

 

 

 

21070

~ 21100

21080

~ 21120

 

 

 

 

24920

~ 24930

22920

~ 24929

 

 

 

 

28070

~ 28150

28050

~ 28150

 

 

 

 

Note: The TS-480 transceiver utilizes the DSP IC to generate a variety of the required audio tones for RTTY operation (AFSK).

6Some stations may be operating in Reverse shift. In this case, press [MODE] (1 s) to reverse the shift (the upper sideband is used).

“FSR” appears.

Traditionally, the lower sideband is used for FSK operation. Press [MODE] (1 s) again to return to the lower sideband. “FSK” appears.

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Contents TS-480HX TS-480SAT Before Starting Quantity Accessory FeaturesSupplied Accessories Thank YOUWriting Conventions Followed Models Covered by this ManualMarket Codes Thank YOUPrecautions Contents Contents Specifications TroubleshootingOptional Accessories IndexInstallation Example InstallationMobile Installation Remote Control Panel InstallationGround Connection Installation DC Power Cable ConnectionAntenna Connection Ignition NoiseInstallation Fixed Station InstallationDC Power Supply Connection TS-480SATLightning Protection Antenna ConnectionGround Connection Fuse Location Fuse Current Rating Portable Bracket E-TYPE onlyFuses TS-480HX/ SATPanel and Microphone Connection Using PG-4Z Option Panel and Microphone ConnectionTX/ RX Unit Accessory ConnectionsRemote Control Panel Your First QSO ReceptionYour First QSO TransmissionRemote Control Panel Getting AcquaintedGetting Acquainted @3LED#1A/B / M/V key @9QMI/ M.IN key#0QMR/ MsVFO key #2A=B/ Split key5FINE LCD Display2AGC OFF @8AUTO @4M.SCR@5DNL #4RITPaddle and KEY jacks TX/ RX UnitEXT.SP jack Plastic coverGND post Cooling FansUP/ DWN keys Remote Control Panel RearMicrophone Operating Basics Switching Power ON/ OFFAdjusting Volume Selecting VFO a or VFO BSelecting a Band Selecting a ModeAdjusting Squelch Selecting a FrequencyMULTI-FUNCTION Meter Selecting Transmission PowerWhat Is Measured? TransmittingOperating Basics Microphone Gain Press MIC/ 5/ RF.GMenu Access Menu SetupWhat is a MENU? Quick MenuDSP Menu ConfigurationFunction TOT Menu SetupGroup Menu Function Selections Default FSKAPO Alphabetical Function List Function MenuFM Transmission Basic CommunicationsSSB Transmission Narrow Bandwidth for AM AM TransmissionNarrow Bandwidth for FM Basic CommunicationsTX SIDETONE/ RX Pitch Frequency CW TransmissionAuto ZERO-BEAT SPLIT-FREQUENCY Operation Press MENU/ F.LOCK 1 s to lock the Tuning controlEnhanced Communications TF-SET Transmission Frequency SETFM Repeater Operation Enhanced CommunicationsActivating the Tone Function Enhanced Communications Transmitting a ToneTone FREQ. ID Scan Selecting a Tone FrequencyFreq FM Ctcss OperationCtcss FREQ. ID Scan Selecting Your Frequency Communicating AidsReception AGC Automatic Gain Control RIT Receive Incremental TuningCommunicating Aids Transmission VOX VOICE-OPERATED TransmitXIT Transmit Incremental Tuning Communicating Aids Speech ProcessorTransmit Inhibit Communicating Aids Customizing Transmission SignalCharacteristics Busy LockoutCW BREAK-IN Using Semi BREAK-IN or Full BREAK-INAuto Weighting Electronic KeyerChecking CW Messages without Transmitting CW Message MemoryStoring CW Messages Transmitting CW MessagesFrequency Correction for CW Auto CW TX in SSB ModeMIC UP/ DWN KEY Paddle Mode Swap DOT and Dash Paddle PositionA./ Canada ARU Region Specialized CommunicationsRadio Teletype Rtty Packet Radio Specialized CommunicationsSlow Scan TV/ Facsimile If Filter Mode If filter bandwidthRejecting Interference Changing the if Filter BandwidthRejecting Interference Adjust ModeDSP Filters Changing the DSP Filter BandwidthDigital Noise Limiter DNL Rejecting Interference Beat Cancel SSB/ FM/ AMNoise Blanker Noise Reduction ALL ModesCenter DSP Filter for Data Communication SSB/ FMDSP RX Monitor CW Reverse Reception PRE-AMPLIFIERAttenuator Storing Data in Memory Memory FeaturesMemory Channels Simplex ChannelsSplit-Frequency Channels Memory FeaturesMemory Recall and Scroll Memory RecallMemory \ VFO Transfer Memory TransferMemory Scroll Temporary Frequency ChangesChannel 00 ~ Channel 90 ~ Storing Frequency RangesConfirming Start/ End Frequencies Programmable VFO Memory Channel LockoutMemory Channel Name Available alpha-numeric charactersRecalling Quick Memory Channels Quick MemoryStoring Into Quick Memory Temporary Frequency ChangesVFO Scan ScanNormal Scan Program ScanScan Hold ScanProgram Scan Partially Slowed Memory Scan Time-Operated mode toCarrier-Operated mode co Scan Resume MethodScan Group Select Scan Group ScanMemory Group Performing Group ScanAutomatic Antenna Tuner Operator ConveniencesAntennas Operator Conveniences Auto ModePresetting External Antenna Tuner typeBeeps What it means Mode Morse Code OutputBeep Function Lock Functions DisplayLinear Amplifier Control RX DSP Equalizer Microphone PF KeysPF KEY RX MonitorTransverter TIME-OUT TimerTX Power TX MonitorTX Tune Setting UPUsing Quick Transfer Quick Data TransferComputer Control Communication ParametersOperator Conveniences Controlling the TS-480 from PC Remote Controlling the TS-480 onOptional NetworkOperator Conveniences Message Playback Constant RecordingQMI/ M.IN MenuLock ENTVoice Guide Announcement Speed Voice Guide Announcement VolumeCrossband Repteater OperationOperator Conveniences DX Packetcluster Tune Preparation Operator Conveniences SKY Command II K-TYPE onlySKY Command II Diagram Control OperationMic Key Function Using TH-D7A AS a CommanderTH-D7A Commander Setup Mode PowerDWN CLRComputer Compatible TransceiverRemote terminal pin assignment 8-pin mini DIN Connecting Peripheral EquipmentRtty Operation Pin No FunctionMCP and TNC Data connector pin assignment 6-pin mini DINAntenna Tuner DX Packetcluster Tune Crossband RepeaterConnecting Peripheral Equipment SKY Command II K-TYPE only TM-D700AVGS-1 Voice Guide & Storage Unit Installing OptionsRemoving the TOP Cover YF-107C/ CN/ SN if Filters and SO-3 TcxoTS-480 transceiver without SO-3 Installing OptionsReference Frequency Calibration TS-480 transceiver with SO-3Troubleshooting General InformationProblem Probable Cause Corrective Action TroubleshootingTroubleshooting Press MENU/ F.LOCK 1 s to switchPress ATT/PRE/ ANT1/2 until ATT Press ATT/PRE/ ANT1/2 to switchPress Mode or Mode 1 s to select Press ATT/PRE/ ANT1/2 1 s toFM Repeater Operation DC Error VGS ERRInitial Settings Microprocessor ResetDemonstration Mode Partial ResetFAN Noises DC Power SupplyOperation Notices Internal BeatsVGS-1 Optional AccessoriesPG-4Z Specifications F1B FSKSpecifications ReceiverIndex CtcssVFO IndexRtty