Kenwood TS-870S Communicating, SSB Transmission, Slow Scan TV/ Facsimile, Sstv Frequencies

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COMMUNICATING

SSB TRANSMISSION

SSB is now the most commonly-used mode on the HF Amateur bands. This popularity is not surprising due to its narrow bandwidth requirements and its good long distance communications capability that demands minimum transmit power when compared with other voice modes. These reasons, combined with the fact that modern Amateur transceivers deliver reasonably good audio quality, make SSB the mode that most prefer on HF. Due to this popularity, you will want to use the technology available on the TS-870S as explained in this and later sections to make your transmitted signal the best possible.

Refer, if necessary, to ÒOPERATING BASICSÓ beginning on page 19 for complete receiving details for any mode.

1Select the operating frequency.

2Press [LSB/USB] to select either upper or lower sideband mode.

AGC AUTO

USB

3Select the ALC meter function by pressing [METER].

S

1

3

5

7

9

20

40

60

dB

 

 

 

 

 

 

 

 

 

25

 

 

 

 

 

 

10

 

50

 

100

 

 

 

0

 

 

FILTER

 

W

 

 

 

 

 

 

 

 

 

ALC

 

 

 

 

 

 

4Press and hold down the Microphone [PTT] switch, or press [SEND].

¥The ÒON AIRÓ indicator lights.

¥Refer to ÒVOXÓ {page 45} for information on automatic TX/RX switching.

5Speak into the microphone and adjust the MIC gain control so that the meter reads in the ALC zone but doesnÕt exceed the upper ALC zone limit.

¥Speak in a normal tone and level of voice. Speaking too close to the microphone, or too loudly, may increase distortion and reduce intelligibility.

¥The ALC level is more restricted than previous KENWOOD transceivers due to the added benefit of the DSP-controlled Microphone AGC function {page 47}.

¥With the Speech Processor switched OFF, the CAR control has no function in this mode.

6If you want to use speech processing, press [PROC] to switch on the Speech Processor and adjust as described on page 46.

7Release the Microphone [PTT] switch, or press [SEND] again, to return to the receive mode.

¥The ÒON AIRÓ indicator goes out.

SLOW SCAN TV/ FACSIMILE

SSTV complements SSB operating since a voice contact is established first before pictures are exchanged. Though once a specialty mode involving a very small percentage of Amateurs, slow scan television is now increasing in popularity as a result of the capability of computers.

No longer is it necessary to squint at an old CRT to view a continuously fading image. It isnÕt necessary to invest in a large amount of additional equipment anymore either. SSTV can be a convenient method of adding interest to otherwise routine voice contacts. Instead of trying to describe your station, just show it. Many Amateurs are only lacking a little application software that uses your computer sound card for transmitting and receiving monochrome or full-color SSTV images.

SSTV FREQUENCIES

IARU Region 1

U.S.A./Canada

(Europe/Africa)

Frequency (kHz)

Frequency (kHz)

 

 

 

3730~3740

3845

7035~7045

7171

 

 

14225~14235

14230

21335~21345

21340

28675~28685

28680

 

 

The high resolution that is possible using facsimile (FAX) can allow you to exchange more detailed graphics than SSTV allows. Due to the longer transmission times required for FAX, itÕs best to use this mode when band conditions are stable with strong signals.

Popular FAX frequencies include the following:

¥7245, 14245, 21345 (Intern. Net), 28945 kHz

Operation on SSTV or FAX mainly involves learning the functionality of your computer application or accessory hardware that supports these modes. Consult the documentation that comes with your software or accessory equipment.

Note: When operating either SSTV or FAX, use a fast AGC setting and switch OFF your Speech Processor for best results.

This completes the ÒSSB TRANSMISSIONÓ section. Refer to ÒOPERATING AIDSÓ beginning on page 44 for information about additional useful functions for operating.

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Contents TS-870S KEY2 Applicable ModelWriting Conventions Followed Cleaning Power SourcesPower Cable Protection Power LinesContents Scan Memory FeaturesRejecting Interference Specifications Appendices MaintenanceOptional Accessories Installing OptionsIntroduction DSP Maximum SIGNAL/ Minimum NoiseFeatures Supplied AccessoriesTransmission Line MHz 14 MHz 30 MHz InstallationAntenna Connection Lightning Protection DC Power Supply ConnectionInstallation Ground ConnectionRear Panel Accessory ConnectionsFront Panel Pin Function Computer Interface COMRtty Equipment Rtty and ACC Linear Amplifier RemoteSM-230 Station Monitor if OUT Accessory Equipment ACCAntenna Tuner AT PKD Pin No. Pin NameANO GND PSQ Smet PKSYour First QSO First QSO Getting Acquainted Front Panel@5QUICK Memo MR button 6KEY Speed control@4QUICK Memo M.IN button CW/ÐR button @7Tuning controlEnter button LSB/USB button#6FILTER LO/WIDTH and HI/SHIFT controls #3BEAT Cancel buttonRX M.CH button #5TX EQ. buttonUP/DWN buttons Microphone$4RIT/XIT control $7M.CH/VFO.CH controlRear Panel 2MONI Display0AUTO 1PROC9TONE 5MENU7SPLIT 8RIT#7M.SCR #2ON AIR#3AT Tune #4FSKOperating Basics Switching Power ON/OFFAdjusting Volume Adjusting SquelchChanging Bands Selecting ModeOperating Basics Equalizing VFO Frequencies A=B Changing Step Sizes Fine TuningQuick Changes Operating BasicsMeter on Front Panel MeterOperating Basics Direct Frequency Entry Microphone Gain Selecting Transmit PowerTransmitting Transmit Carrier LevelTemporary Menu Resetting Menu SetupWhat is a MENU? Menu AccessLO/WIDTH and HI/SHIFT controls Menu ConfigurationMenu Setup Menu Item Function Selections DefaultM.CH/VFO.CH control Setting Baud Rate bps Stop Bits Cross Reference for Menu Functions Sstv Frequencies CommunicatingSSB Transmission Slow Scan TV/ FacsimileTX SIDETONE/ RX Pitch Frequency Switching TX/RX ManuallyCW Transmission CommunicatingCW Reverse Receive Setting Delay TimeCommunicating Semi BREAK-IN Full BREAK-INKEY Speed control Function DefaultCommunicating Electronic Keyer Activity ConsultEmulation Options Multiple-Button FunctionsCW Message Playback Storing CW MessagesTo check an Inquiry function Press CH 3+CH Inquiry Command DescriptionErasing CW Messages Inquiry FunctionsPress CH 1+CH Function CommandsOption d Leading Other Nines Embedded FunctionsSerial Number Options Press RX a or RX B FM TransmissionFM Repeater Operation Press RX B or RX aArrl 10-METER Band Plan Selecting Subtone FrequencyContinuous or Burst Subtones? Rtty Frequency Shift Keying AM TransmissionDigital Operation Amtor ERROR-CHECKING Modes AMTOR/ PACKET/ PACTOR/ G-TOR/ CloverMode Meaning Rtty FrequenciesPacket Frequencies SPLIT-FREQUENCY OperationSatellite Operation Communicating TF-SET Transmit Frequency SETAGC Automatic Gain Control RIT Receive Incremental TuningOperating Aids ReceivingTransmit Inhibit XIT Transmit Incremental TuningOperating Aids VOX VOICE-OPERATED TransmitTransmit Monitor Mode Transmit Sampling PointOperating Aids Speech Processor SSB/AM Changing Frequency While TransmittingMicrophone AGC Changing Transmit BandwidthTransmit Bandshift Equalizing Transmit AudioPress MENU+ Automatic ModeAutomatic Mode Boundaries Using Automatic ModeInternal Tuner Presetting Internal Tuner onlyPreset Bands for Internal Tuner Automatic Antenna TunerMenu No Baud Rate Stop Bits Operating Aids AT-300 External Tuner OptionalCommunication Parameters If Shift CW Slope Tuning SSB/AMRejecting Interference DSP ToolsAdaptive Filters Beat Cancel SSB/AMRejecting Interference Auto Notch SSB CW/FSK/FMAttenuator Setting Spac TimeNoise Blanker AIP Advanced Intercept PointMemory Channel Data Memory FeaturesConventional or Quick MEMORY? Conventional MemoryQuick Channel Search Memory FeaturesMemory Channel Recall Split-Frequency ChannelsMemory \ VFO Transfers Memory TransferMemory Channel Scroll Temporary Frequency ChangesChannel Full ResetErasing Memory Channels Channel to Channel TransfersProgrammable VFO Function Memory Features Storing Scan Limits in CHTemporary Frequency Changes Quick MemoryStoring Into Quick Memory Recalling from Quick MemoryConfirming START/END Limits ScanProgram Scan Scan HoldALL-CHANNEL Scan Memory ScanScan Busy Frequency StopMemory Channel Lockout Setting Scan SpeedProgrammable Function Buttons Microprocessor ResetSwitching ANT 1/ ANT Operator ConveniencesOperator Conveniences Assigning Functions Beep FunctionQuick Data Transfer Alarm NotificationSetting UP Display DimmerTransferring Data Using Quick TransferOperator Conveniences ConnectionsChecking Messages DRU-3 Digital Recording System OptionalRecording Messages Message PlaybackTransmitting Messages Manual TX/RX VS-2 Voice Synthesizer OptionalContinuous MULTI-CHANNEL Playback Altering INTER-MESSAGE IntervalCleaning MaintenanceService Service NoteReference Frequency Calibration Internal AdjustmentsMaintenance Problem Symptom Probable Cause Corrective Action TroubleshootingPress LSB/USB, CW/-R,FSK/-R, or SWR PG-2Z Optional AccessoriesDRU-3 PC-1ADRU-3 Digital Recording Unit Installing OptionsRemoving the Case VS-2 Voice Synthesizer UnitSO-2 TEMPERATURE-COMPENSATED Crystal Oscillator Tcxo Installing OptionsFSK, FM SpecificationsFSK, AM SpecificationsAppendix a Learning about DSP HF Beacons Appendix B PropagationInformation NCDXF/IARU Beacon NetworkFreq kHz Call Sign Receiver for Swling Appendix C General CoverageHardware Description Appendix D COM Connector ProtocolCommands Command DescriptionParameter Table BAD Command ExamplesParameter Description Subtone Table for Format NO.14 Computer Control CommandsTypes of Commands TerminatorCommand USE Precautions Error MessagesParameter Menu Selection Table for EX COMMAND, ParameterMenu Menu Item Command Tables Reading Command TablesBusy ID Identification Set Mixer RA RF Attenuator XIT TOR DRSDSP Rtty SSB Sstv AGCSstv FSK TOR
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TS-870S specifications

The Kenwood TS-870S is a distinguished transceiver that stands out in the world of amateur radio, particularly for enthusiasts who seek a blend of advanced technology and user-friendly features. Introduced in the early 1990s, this HF transceiver quickly gained a reputation for its exceptional performance, versatility, and reliability, making it a favorite among operators worldwide.

One of the most noteworthy features of the TS-870S is its direct-sampling technology, which allows for superior signal fidelity and processing. This technology enables the transceiver to operate across a range of 160 meters to 10 meters, catering to both casual and serious operators. Its high-performance 16-bit digital signal processing (DSP) facilitates effective noise reduction and filtering capabilities, enhancing the overall clarity during transmission and reception.

In terms of power, the TS-870S boasts an output of 100 watts, providing ample power for various communication needs. The transceiver is equipped with an automatic antenna tuner, which simplifies the task of matching the antenna to the operating frequency, ensuring optimal performance without the hassle of manual adjustments.

Another significant aspect of the Kenwood TS-870S is its user interface, featuring a large, easy-to-read display, and a logically arranged control layout. This makes it accessible for both novice and experienced operators. The built-in memories allow for quick storage and access to favorite frequencies and settings, enhancing operational efficiency.

The Kenwood TS-870S also includes various advanced features such as an optional 2.4 kHz and 6 kHz roofing filter which provides improved performance in crowded band conditions. The receiver's dual VFOs (Variable Frequency Oscillators) enable simultaneous monitoring of two frequencies, which is particularly useful for operators who need to keep track of multiple signals or engage in cross-band communication.

Apart from its technical specifications, the TS-870S is constructed with durability in mind, ensuring that it can withstand the rigors of frequent use. It supports various operating modes, including SSB, CW, AM, and FM, making it a versatile choice for diverse amateur radio activities.

In conclusion, the Kenwood TS-870S combines advanced technology with user-friendly characteristics, offering amateur radio operators an exceptional tool for communication. With its innovative features, robust performance, and flexibility, it continues to be a respected choice among radio enthusiasts, solidifying its legacy in the realm of amateur radio.