Kenwood TS-870S DRU-3 Digital Recording System Optional, Recording Messages, Message Playback

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11 OPERATOR CONVENIENCES

DRU-3 DIGITAL RECORDING SYSTEM (OPTIONAL)

The DRU-3 DRS unit allows you to record approximately 15 seconds of audio per channel on up to 4 channels. The audio is input via your transceiver microphone. Once recorded, the audio can then be transmitted. It is also possible to make longer messages by consecutively sending the contents of message memories. Finally, you can even send this longer linked message repeatedly by using the Repeat function accessible via Menu No. 39 (REPEAT).

The DRU-3 is useful in many situations:

¥DX chasing or contest operation where repeated calls are necessary for extended periods of time

¥Checking interference complaints to other equipment (lets you be in two places at one time)

¥Checking or adjusting your transmit signal or your antennas if itÕs not convenient to be sitting in front of your microphone

¥Helping a friend adjust his antenna or receiver when he needs repeated test transmissions from you

Once you begin using the unit, youÕll likely discover other applications.

RECORDING MESSAGES

To record a message, you must select the same mode for transmit and receive. The selected mode must be SSB, FM, or AM.

Note:

Pressing the [] (POWER) switch while recording or playing back messages may cause previously recorded messages or recordings in progress to be erased.

Refer to “INTERNAL ADJUSTMENTS” {page 70} for information on adjusting the recording level.

1Switch OFF the VOX function by pressing [VOX].

2Press [REC] to activate the Record Standby mode.

¥ ÒAP - appears.

AGC AUTO

USB

¥Press [CLR] to exit from the Record Standby mode and to abort recording your message. This does not erase any previously recorded messages.

3Press and hold down [CH 1], or [CH 2], or [CH 3], or [CH 4] and begin speaking into your microphone.

¥There are four memories for recording messages. Press the button that corresponds to the message memory that you want to use.

4Release the button pressed in Step 3 when you have finished recording your message.

¥Recording continues until you release the key or the maximum recording time passes (about

15 seconds) whichever occurs first.

Note: To erase a message, use the above recording procedure without speaking into the microphone (or disconnect your microphone) while recording.

MESSAGE PLAYBACK

This section explains how to play back the contents of a single message memory. Whether checking or actually transmitting messages, press [CLR] any time you want to cancel playback. Also, you cannot change the transceiver frequency while playing back messages.

Note: Pressing the [] (POWER) switch while recording or playing back messages may cause previously recorded messages or recordings in progress to be erased.

Checking Messages

Use this procedure to verify the contents of a message memory.

1 Switch OFF the VOX function by pressing [VOX].

2 Select SSB, FM, or AM mode by pressing [LSB/USB] or [FM/AM].

¥The transmit and receive modes must be the same.

3Press [CH 1], or [CH 2], or [CH 3], or [CH 4] to play back the message in the respective memory.

¥For example, ÒAP 1 - - - - - appears while Message #1 is playing back.

Transmitting Messages (VOX)

Use this procedure to transmit the contents of a message memory.

1 Switch ON the VOX function by pressing [VOX].

VOX

AGC AUTO

USB

2Select SSB, FM, or AM mode by pressing [LSB/USB] or [FM/AM].

¥The transmit and receive modes must be the same.

3Press [CH 1], or [CH 2], or [CH 3], or [CH 4] to play back the message in the respective memory.

¥After the message is transmitted, the transceiver automatically returns to the receive mode.

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Contents TS-870S Writing Conventions Followed Applicable ModelKEY2 Power Cable Protection Power SourcesPower Lines CleaningContents Rejecting Interference Memory FeaturesScan Optional Accessories MaintenanceInstalling Options Specifications AppendicesFeatures DSP Maximum SIGNAL/ Minimum NoiseSupplied Accessories IntroductionAntenna Connection InstallationTransmission Line MHz 14 MHz 30 MHz Installation DC Power Supply ConnectionGround Connection Lightning ProtectionFront Panel Accessory ConnectionsRear Panel Rtty Equipment Rtty and ACC Computer Interface COMLinear Amplifier Remote Pin FunctionAntenna Tuner AT Accessory Equipment ACCSM-230 Station Monitor if OUT ANO GND PSQ Smet Pin No. Pin NamePKS PKDYour First QSO First QSO Getting Acquainted Front Panel@4QUICK Memo M.IN button 6KEY Speed control@5QUICK Memo MR button Enter button @7Tuning controlLSB/USB button CW/ÐR buttonRX M.CH button #3BEAT Cancel button#5TX EQ. button #6FILTER LO/WIDTH and HI/SHIFT controls$4RIT/XIT control Microphone$7M.CH/VFO.CH control UP/DWN buttonsRear Panel 0AUTO Display1PROC 2MONI7SPLIT 5MENU8RIT 9TONE#3AT Tune #2ON AIR#4FSK #7M.SCRAdjusting Volume Switching Power ON/OFFAdjusting Squelch Operating BasicsOperating Basics Equalizing VFO Frequencies A=B Selecting ModeChanging Bands Quick Changes Fine TuningOperating Basics Changing Step SizesOperating Basics Direct Frequency Entry Front Panel MeterMeter on Transmitting Selecting Transmit PowerTransmit Carrier Level Microphone GainWhat is a MENU? Menu SetupMenu Access Temporary Menu ResettingMenu Setup Menu ConfigurationMenu Item Function Selections Default LO/WIDTH and HI/SHIFT controlsM.CH/VFO.CH control Setting Baud Rate bps Stop Bits Cross Reference for Menu Functions SSB Transmission CommunicatingSlow Scan TV/ Facsimile Sstv FrequenciesCW Transmission Switching TX/RX ManuallyCommunicating TX SIDETONE/ RX Pitch FrequencyCommunicating Semi BREAK-IN Setting Delay TimeFull BREAK-IN CW Reverse ReceiveCommunicating Electronic Keyer Function DefaultActivity Consult KEY Speed controlEmulation Options Multiple-Button FunctionsCW Message Playback Storing CW MessagesErasing CW Messages Inquiry Command DescriptionInquiry Functions To check an Inquiry function Press CH 3+CHPress CH 1+CH Function CommandsSerial Number Options Embedded FunctionsOption d Leading Other Nines FM Repeater Operation FM TransmissionPress RX B or RX a Press RX a or RX BContinuous or Burst Subtones? Selecting Subtone FrequencyArrl 10-METER Band Plan Digital Operation AM TransmissionRtty Frequency Shift Keying Mode Meaning ERROR-CHECKING Modes AMTOR/ PACKET/ PACTOR/ G-TOR/ CloverRtty Frequencies AmtorPacket Frequencies SPLIT-FREQUENCY OperationSatellite Operation Communicating TF-SET Transmit Frequency SETOperating Aids RIT Receive Incremental TuningReceiving AGC Automatic Gain ControlOperating Aids XIT Transmit Incremental TuningVOX VOICE-OPERATED Transmit Transmit InhibitOperating Aids Speech Processor SSB/AM Mode Transmit Sampling PointChanging Frequency While Transmitting Transmit MonitorTransmit Bandshift Changing Transmit BandwidthEqualizing Transmit Audio Microphone AGCAutomatic Mode Boundaries Automatic ModeUsing Automatic Mode Press MENU+Preset Bands for Internal Tuner Presetting Internal Tuner onlyAutomatic Antenna Tuner Internal TunerCommunication Parameters Operating Aids AT-300 External Tuner OptionalMenu No Baud Rate Stop Bits Rejecting Interference Slope Tuning SSB/AMDSP Tools If Shift CWRejecting Interference Beat Cancel SSB/AMAuto Notch SSB CW/FSK/FM Adaptive FiltersNoise Blanker Setting Spac TimeAIP Advanced Intercept Point AttenuatorConventional or Quick MEMORY? Memory FeaturesConventional Memory Memory Channel DataMemory Channel Recall Memory FeaturesSplit-Frequency Channels Quick Channel SearchMemory Channel Scroll Memory TransferTemporary Frequency Changes Memory \ VFO TransfersErasing Memory Channels Full ResetChannel to Channel Transfers ChannelProgrammable VFO Function Memory Features Storing Scan Limits in CHStoring Into Quick Memory Quick MemoryRecalling from Quick Memory Temporary Frequency ChangesProgram Scan ScanScan Hold Confirming START/END LimitsScan Memory ScanBusy Frequency Stop ALL-CHANNEL ScanMemory Channel Lockout Setting Scan SpeedSwitching ANT 1/ ANT Microprocessor ResetOperator Conveniences Programmable Function ButtonsOperator Conveniences Assigning Functions Beep FunctionSetting UP Alarm NotificationDisplay Dimmer Quick Data TransferOperator Conveniences Using Quick TransferConnections Transferring DataRecording Messages DRU-3 Digital Recording System OptionalMessage Playback Checking MessagesContinuous MULTI-CHANNEL Playback VS-2 Voice Synthesizer OptionalAltering INTER-MESSAGE Interval Transmitting Messages Manual TX/RXService MaintenanceService Note CleaningMaintenance Internal AdjustmentsReference Frequency Calibration Problem Symptom Probable Cause Corrective Action TroubleshootingPress LSB/USB, CW/-R,FSK/-R, or SWR DRU-3 Optional AccessoriesPC-1A PG-2ZRemoving the Case Installing OptionsVS-2 Voice Synthesizer Unit DRU-3 Digital Recording UnitSO-2 TEMPERATURE-COMPENSATED Crystal Oscillator Tcxo Installing OptionsFSK, FM SpecificationsFSK, AM SpecificationsAppendix a Learning about DSP Information Appendix B PropagationNCDXF/IARU Beacon Network HF BeaconsFreq kHz Call Sign Receiver for Swling Appendix C General CoverageCommands Appendix D COM Connector ProtocolCommand Description Hardware DescriptionParameter Description BAD Command ExamplesParameter Table Types of Commands Computer Control CommandsTerminator Subtone Table for Format NO.14Command 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 DSP DRSTOR Sstv AGCFSK TOR Rtty SSB Sstv
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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.