Kenwood TS-570D Internal Adjustments, Maintenance, Reference Frequency Calibration

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16 MAINTENANCE

INTERNAL ADJUSTMENTS

6 Adjust the TC500 trimmer to minimize the frequency

 

difference between the received 800 Hz tone and

 

the 800 Hz sidetone.

REFERENCE FREQUENCY CALIBRATION

Note:

The transceiver is adjusted at the factory prior to shipping. Unless necessary, DO NOT perform this adjustment.

If you have installed the optional SO-2 unit, you cannot perform this adjustment.

1Set the following on the transceiver:

Mode: CW

AF control: Center

Menu No. 20 (CW RX pitch): 800 Hz

IF SHIFT control: Center

Receive bandwidth {page 38}: 600 Hz

RIT function: OFF

Break-in function (VOX): OFF

2Remove the bottom case (8 screws) from the transceiver.

3Remove the protective cover installed on the PC board (6 screws).

4Tune in a standard frequency station such as WWV or WWVH at, for example, 10.000 or 15.000 MHz.

Adjust the Tuning control so that the display reads the exact frequency of the station.

You should hear a beat tone of approximately 800 Hz.

For 800￿Hz:

faf = (fdisplay/20.000 x freference) + 800￿Hz where freference is the shift from the 20￿MHz reference frequency

5Close your CW key and you will hear a transmit sidetone of approximately 800 Hz.

This sidetone produces a double beat tone when it combines with the received signal.

Adjust the AF control to hear the double beat clearly.

For 800￿Hz:

fsidetone = 800￿Hz±50 ppm (= 800 ±0.04 Hz) where freference is the shift from the 20￿MHz reference frequency

TC500

7Re-install the protective cover on the PC board (6￿screws).

8Re-install the bottom case (8 screws).

ACCESSING THE INTERNAL FUSE

1Remove the top case (8 screws) from the transceiver.

2Remove the 12 screws that fasten the inner cover to the chassis.

3Open the inner cover.

Be careful not to damage the speaker cable connected to the PC board.

Fuse (4A)

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Contents TS-570S Applicable Model Supplied AccessoriesAccessory Part Number Intelligent Digital Enhanced Communications SystemWriting Conventions Followed FeaturesKEY2 Contents Scan Memory FeaturesSpecifications Appendix COM Connector Protocol Index Operator ConveniencesPower Lines Power SourcePower Cable Protection CleaningAntenna Connection InstallationTransmission Line MHz 14 MHz 30 MHz Ground Connection DC Power Supply ConnectionInstallation Lightning ProtectionFront Panel Accessory ConnectionsRear Panel Your First QSO DSP Slope High control Fully clockwise DSP Slope LOW controlYour Getting Acquainted Front PanelGetting Acquainted TF-SET button UP/DOWN buttonsSplit button Clear buttonMicrophone KEY and Paddle jacks Rear PanelGND post EXT SP jackDisplay @8USB @6M.SCR@7LSB #1FSKOperating Basics Switching Power ON/OFFAdjusting Volume Selecting VFO a or VFO BSelecting a Frequency Selecting a ModeAdjusting Squelch Front Panel MeterTransmitting Selecting Transmit PowerMicrophone Gain Menu Access Menu SetupWhat is a MENU? Menu A/ Menu BFunction Selections Default Menu ConfigurationMenu Setup GroupSetting Transfer Rate bps Stop Bits SplitCross Reference for Menu Functions Basic Communicating SSB TransmissionAuto ZERO-BEAT CW TransmissionBasic Communicating TX SIDETONE/ RX Pitch FrequencyTX Deviation Selection FM TransmissionAM Transmission Press FilterTF-SET Transmit Frequency SET Specialized CommunicatingSPLIT-FREQUENCY Operation UP/DWNArrl 10-METER Band Plan FM Repeater OperationSpecialized Communicating Mode/ActivitySpecialized Communicating Selecting Subtone Frequency FM Ctcss OperationContinuous or Burst SUBTONES? Rtty Frequencies Digital OperationRtty Frequency Shift Keying Iaru Region A./CanadaPacket Frequencies Satellite Operation Slow Scan TV/ FacsimileSstv Frequencies Receiving Communicating AidsSelecting Your Frequency AGC Automatic Gain Control RIT Receive Incremental TuningCommunicating Aids RX EqualizerVOX VOICE-OPERATED Transmit Delay TimePress Delay Microphone Input LevelXIT Transmit Incremental Tuning Communicating Aids Speech ProcessorChanging Frequency While Transmitting Monitoring Transmitted SignalsTransmit Inhibit Changing Transmit Bandwidth SSB/AMCW BREAK-IN Using Semi BREAK-IN or Full BREAK-INAuto Weighting Electronic KeyerBUG KEY Function Communicating Aids Changing LOCKED-WEIGHTCW Message Memory Noise Blanker Rejecting InterferenceIf Filter Changing if Filter BandwidthDSP Tools AttenuatorPreamplifier Rejecting InterferenceNoise Reduction Beat CancelSetting NR2 Time Constant CW/ FSK ModesStoring Data in Memory Memory FeaturesConventional Memory Simplex ChannelsMemory Recall Memory FeaturesSplit-Frequency Channels Memory Recall and ScrollMemory-VFO Split Operation Memory ScrollTemporary Frequency Changes To use a memory channel for receivingMemory VFO Transfer Memory Features Memory TransferChannel Channel Transfer Erasing Memory Channels Memory Features Storing Frequency RangesFull Reset Confirming Start/End FrequenciesMemory Channel Lockout Quick MemoryStoring Into Quick Memory Press CLRTemporary Frequency Changes Memory Features Recalling Quick MemoryQuick Memory VFO Transfer Scan Hold ScanProgram Scan Scan Type PurposeALL-CHANNEL Scan Memory ScanScan Group ScanOperator Conveniences Microprocessor ResetSwitching ANT 1/ ANT Frequency Lock FunctionProgram Function Button Beep FunctionDisplay Dimmer Operator ConveniencesUsing Quick Transfer Setting UPQuick Data Transfer Computer Control Using a TransverterMenu Setting Transfer Rate Stop Bits Communication ParametersAutomatic Antenna Tuner PresettingAttune again Message Playback Recording MessagesChecking Messages Sending Messages Changing VolumeChanging Inter-message Interval Voice New Mode AnnouncementMenu StepsPC-1A Optional AccessoriesDRU-3A PG-2ZRemoving the Bottom Case Installing OptionsDRU-3A Digital Recording Unit VS-3 Voice Synthesizer Unit Installing OptionsFilters SO-2 TEMPERATURE-COMPENSATED Crystal Oscillator Tcxo Compatible Transceiver Connecting Peripheral EquipmentComputer Pin No. Pin NameLinear Amplifier Connecting Peripheral EquipmentRtty Equipment Antenna TunerMCP and TNC Pin No FunctionService Note MaintenanceService CleaningAccessing the Internal Fuse Internal AdjustmentsMaintenance Reference Frequency CalibrationFollowed TroubleshootingProblem Probable Cause Corrective Action DSP Slope LOW control orPress LSB/USB, CW/FSK, or Changing ReceivePress LSB/USB or FM/AM to Repeater Operation SSB, CW TS-570S TS-570DFSK, FM Specifications SSB, CW, FSKAppendix Hardware DescriptionControl Operation COMError Messages Computer Control CommandsAlphabetical Commands ParametersAlphabetical Command Table OFF/ONParameter Table FormatMenu Selection Table for EX Command UP/DOWNComputer Control Command Tables I o !0DN UP DOWN/UP LK Frequency Lock MG MIC Gain RT RIT RX TX RX, TX VOX Function VFO Sstv