Kenwood TS-870S Operating Aids Speech Processor SSB/AM, Changing Frequency While Transmitting

Page 52

7 OPERATING AIDS

SPEECH PROCESSOR (SSB/AM)

The speech processor functions by leveling the large fluctuations in your voice when you speak. This leveling action effectively raises the average transmit output power resulting in a more understandable signal when operating using SSB or AM. You will notice that using the speech processor makes it easier to be heard by distant stations.

1Select SSB or AM mode.

2Select the preferred processor characteristics via Menu No. 25 (PROC.LOW) and Menu No. 26 (PROC.HI).

•You can customize the low and high ranges of the speech envelope from –6 to +6 dB.

dB +6

 

Lower

Raise

 

 

 

+3

 

Low

High

 

0

 

 

 

 

 

range

range

 

 

-3

 

 

 

 

 

 

-6

 

800 Hz

1.6 kHz

 

 

 

3Press [PROC] to switch ON the processor.

• “PROC” lights.

AGC AUTO PROC

USB

4Press [METER] to select the COMP function.

5While speaking at your normal voice level, adjust the PROC control for a level of 10 dB or less.

•Using higher compression will not improve your signal clarity or apparent signal strength. Excessively compressed signals are more difficult to understand due to distortion and are less pleasant to hear than signals with less compression.

PROC MONI

46

 

 

 

 

 

 

 

S

 

 

40

 

60 dB

 

VOX

FULL

SEMI AIP

AGC

AUTO

PROC

 

 

 

 

ATT

 

PWR

 

 

100

W

 

M.CH

 

 

 

 

 

 

 

 

ANT

DOWN

UP

 

 

 

 

 

 

 

 

 

 

 

 

2

 

8

 

 

 

 

 

 

 

 

 

dB

 

 

AUTO

LSB

USB CW

R

FSK FM

 

VOX

FULL/SEMI

AIP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HF TRANSCEIVER

 

TS-870

 

 

 

ON AIR

 

 

AT

 

 

 

AT TUNE

THRU/AUTO

 

METER

PROC

MONI

1

 

CH 1

6

M.IN

 

 

 

 

 

 

 

 

SEND

 

AGC

KEY SPEED

PROC

MONI

 

 

 

 

 

 

ENTER

 

 

 

 

 

 

 

 

 

 

4

6

2

 

CH 2

7

M>VFO

 

 

 

 

0

1 0

 

PHONES

 

 

 

2

8

3

 

CH 3

8

SCAN

 

 

 

 

 

 

 

 

 

SLOW

 

FAST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

0

1 0

4

 

CH 4

9

CLR

 

 

 

 

 

 

 

 

MIC

 

CAR

DELAY

MIC

PWR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

6

4

6

5

 

REC

0

F.LOCK

 

 

 

 

 

 

 

 

 

2

 

8

2

8

 

 

QUICK MEMO

 

 

 

 

 

10

20

 

 

 

 

 

 

 

 

 

 

 

 

 

FINE

 

 

 

 

 

 

 

0

1 0

0

1 0

 

 

 

 

 

 

 

 

 

 

 

COMP

 

 

d

 

 

 

 

 

 

M.IN

 

 

MR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6Press [METER] to select the ALC function.

7The compression level affects the ALC setting for SSB; therefore, while continuing to speak into the microphone, adjust the CAR control for a reading within the ALC zone.

•Keep the meter inside the ALC zone for the cleanest transmit signal and to avoid interfering with other stations on adjacent frequencies.

8Press [METER] to select the COMP function to allow you to monitor the compression while transmitting.

9To switch OFF the processor, press [PROC] again.

•“PROC” goes out.

Note: Input audio that is controlled by the AGC will be clipped. Therefore, when mixing audio with the operator’s voice, lower the MIC gain control as necessary.

CHANGING FREQUENCY WHILE TRANSMITTING

Moving your frequency while transmitting is usually an unwise practice due to the risk of interference to other stations. While transmitting, if you select a frequency outside the transmit frequency range, the transceiver is automatically forced to receive mode. If transmit was selected using the [SEND] key, transmission will not be resumed until you select a frequency inside the transmit frequency range, and you transmit again.

TRANSMIT MONITOR

The Transmit Monitor function allows you to hear your own transmitted signal.

Mode

Transmit Sampling Point

 

 

SSB

Unmixed AF

 

 

CW

Keyed output from DSP with sidetone OFF

 

 

FSK

AF corresponding to the shift and mark/space

 

 

AM

Unmixed AF

 

 

FM

Unmixed AF

 

 

Press [MONI] to toggle the Monitor function ON or OFF.

AGC AUTO

MONI

USB

•To change the volume of the monitored audio, adjust the MONI control.

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Contents TS-870S Writing Conventions Followed Applicable ModelKEY2 Power Sources Power Cable ProtectionPower Lines CleaningContents Rejecting Interference Memory FeaturesScan Maintenance Optional AccessoriesInstalling Options Specifications AppendicesDSP Maximum SIGNAL/ Minimum Noise FeaturesSupplied Accessories IntroductionAntenna Connection InstallationTransmission Line MHz 14 MHz 30 MHz DC Power Supply Connection InstallationGround Connection Lightning ProtectionFront Panel Accessory ConnectionsRear Panel Computer Interface COM Rtty Equipment Rtty and ACCLinear Amplifier Remote Pin FunctionAntenna Tuner AT Accessory Equipment ACCSM-230 Station Monitor if OUT Pin No. Pin Name ANO GND PSQ SmetPKS PKDYour First QSO First QSO Front Panel Getting Acquainted@4QUICK Memo M.IN button 6KEY Speed control@5QUICK Memo MR button @7Tuning control Enter buttonLSB/USB button CW/ÐR button#3BEAT Cancel button RX M.CH button#5TX EQ. button #6FILTER LO/WIDTH and HI/SHIFT controlsMicrophone $4RIT/XIT control$7M.CH/VFO.CH control UP/DWN buttonsRear Panel Display 0AUTO1PROC 2MONI5MENU 7SPLIT8RIT 9TONE#2ON AIR #3AT Tune#4FSK #7M.SCRSwitching Power ON/OFF Adjusting VolumeAdjusting Squelch Operating BasicsOperating Basics Equalizing VFO Frequencies A=B Selecting ModeChanging Bands Fine Tuning Quick ChangesOperating Basics Changing Step SizesOperating Basics Direct Frequency Entry Front Panel MeterMeter on Selecting Transmit Power TransmittingTransmit Carrier Level Microphone GainMenu Setup What is a MENU?Menu Access Temporary Menu ResettingMenu Configuration Menu SetupMenu 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 Communicating SSB TransmissionSlow Scan TV/ Facsimile Sstv FrequenciesSwitching TX/RX Manually CW TransmissionCommunicating TX SIDETONE/ RX Pitch FrequencySetting Delay Time Communicating Semi BREAK-INFull BREAK-IN CW Reverse ReceiveFunction Default Communicating Electronic KeyerActivity Consult KEY Speed controlMultiple-Button Functions Emulation OptionsStoring CW Messages CW Message PlaybackInquiry Command Description Erasing CW MessagesInquiry Functions To check an Inquiry function Press CH 3+CHFunction Commands Press CH 1+CHSerial Number Options Embedded FunctionsOption d Leading Other Nines FM Transmission FM Repeater OperationPress 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 ERROR-CHECKING Modes AMTOR/ PACKET/ PACTOR/ G-TOR/ Clover Mode MeaningRtty Frequencies AmtorSPLIT-FREQUENCY Operation Packet FrequenciesCommunicating TF-SET Transmit Frequency SET Satellite OperationRIT Receive Incremental Tuning Operating AidsReceiving AGC Automatic Gain ControlXIT Transmit Incremental Tuning Operating AidsVOX VOICE-OPERATED Transmit Transmit InhibitMode Transmit Sampling Point Operating Aids Speech Processor SSB/AMChanging Frequency While Transmitting Transmit MonitorChanging Transmit Bandwidth Transmit BandshiftEqualizing Transmit Audio Microphone AGCAutomatic Mode Automatic Mode BoundariesUsing Automatic Mode Press MENU+Presetting Internal Tuner only Preset Bands for Internal TunerAutomatic Antenna Tuner Internal TunerCommunication Parameters Operating Aids AT-300 External Tuner OptionalMenu No Baud Rate Stop Bits Slope Tuning SSB/AM Rejecting InterferenceDSP Tools If Shift CWBeat Cancel SSB/AM Rejecting InterferenceAuto Notch SSB CW/FSK/FM Adaptive FiltersSetting Spac Time Noise BlankerAIP Advanced Intercept Point AttenuatorMemory Features Conventional or Quick MEMORY?Conventional Memory Memory Channel DataMemory Features Memory Channel RecallSplit-Frequency Channels Quick Channel SearchMemory Transfer Memory Channel ScrollTemporary Frequency Changes Memory \ VFO TransfersFull Reset Erasing Memory ChannelsChannel to Channel Transfers ChannelMemory Features Storing Scan Limits in CH Programmable VFO FunctionQuick Memory Storing Into Quick MemoryRecalling from Quick Memory Temporary Frequency ChangesScan Program ScanScan Hold Confirming START/END LimitsMemory Scan ScanBusy Frequency Stop ALL-CHANNEL ScanSetting Scan Speed Memory Channel LockoutMicroprocessor Reset Switching ANT 1/ ANTOperator Conveniences Programmable Function ButtonsBeep Function Operator Conveniences Assigning FunctionsAlarm Notification Setting UPDisplay Dimmer Quick Data TransferUsing Quick Transfer Operator ConveniencesConnections Transferring DataDRU-3 Digital Recording System Optional Recording MessagesMessage Playback Checking MessagesVS-2 Voice Synthesizer Optional Continuous MULTI-CHANNEL PlaybackAltering INTER-MESSAGE Interval Transmitting Messages Manual TX/RXMaintenance ServiceService Note CleaningMaintenance Internal AdjustmentsReference Frequency Calibration Troubleshooting Problem Symptom Probable Cause Corrective ActionPress LSB/USB, CW/-R,FSK/-R, or SWR Optional Accessories DRU-3PC-1A PG-2ZInstalling Options Removing the CaseVS-2 Voice Synthesizer Unit DRU-3 Digital Recording UnitInstalling Options SO-2 TEMPERATURE-COMPENSATED Crystal Oscillator TcxoSpecifications FSK, FMSpecifications FSK, AMAppendix a Learning about DSP Appendix B Propagation InformationNCDXF/IARU Beacon Network HF BeaconsFreq kHz Call Sign Appendix C General Coverage Receiver for SwlingAppendix D COM Connector Protocol CommandsCommand Description Hardware DescriptionParameter Description BAD Command ExamplesParameter Table Computer Control Commands Types of CommandsTerminator Subtone Table for Format NO.14Error Messages Command USE PrecautionsMenu Selection Table for EX COMMAND, Parameter ParameterMenu Menu Item Reading Command Tables Command TablesBusy ID Identification Set Mixer RA RF Attenuator XIT DSP DRSTOR AGC SstvFSK TOR Rtty SSB Sstv
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Manual 28 pages 9.83 Kb Manual 104 pages 31.74 Kb

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.
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