Kenwood TS-590S manual Development Spirit

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Development Spirit

TS-590S was planned as the “legitimate successor to the TS-570S” after 14 years or more of time have elapsed since the first market appearance of TS-570S in 1996. TS-590S is titled with the 500s model number with the TS-570S but, needless to say, we started the development as a totally new transceiver.

First, let’s look back on the TS-570S.

The product concepts of the TS-570S were “ease of operation” and “providing basic performance sufficient for rag-chewing and DX operation at a preferable price range”.

Soon after the launch of the TS-570S, the simple exterior appearance with rounded buttons stirred both positive and negative market comments, but we have received many favorable opinions from users who actually used the transceiver, such as “Buttons are easy to press” and “Setup of functions is easy to understand”.

In fact, the TS-570S employed an up-conversion circuitry configuration that was very popular at that time and provided sufficient basic performance in a transceiver having the cost-to-performance-ratio price range. The TS-570S incorporated an AF DSP, which was usually offered as an external device around that time, and received favorable reception as “a younger brother” of TS-870S that was equipped with IF DSP.

The most notable feature of the TS-590S is the superior receive performance that exceeds expectations in its the cost-to-performance-ratio price range. It goes without saying, of course, that we invested as much effort in all the other elements as in the RX circuit in developing the TS-590S.

In evaluating a transceiver, in addition to electrical characteristics represented by numerical data, ease of operation and visibility are also important criteria. As for ease of operation, Kenwood has been developing transceivers on the basis of operability of successive HF transceivers, to which users' voices also have been reflected; therefore, we need to take the history and background into consideration while designing a product.

Though the new TS-590S inherits the DNA of Kenwood’s HF transceivers, new technologies and ideas are also added. We are confident that all users, from the newest user to the most experienced veteran user, will be satisfied with this transceiver.

As for the development objectives and backdrop of the “totally new” portion of the product, we will reveal them in the technical explanations of the chapters subsequently.

Be our guest and allow us to share the development background of the TS-590S and what’s in the spirit of the development engineers.

Kenwood HF Transceiver Development Team

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CONTENTS

TS-590S

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Contents TS-590S About Trademarks and Intellectual Properties About CopyrightCopyright of this Manual and Software Other RestrictionsContents Optional Accessory Product Planning Objectives Development Spirit Reception Type of ConversionReception Block diagram Down Conversion Down ConversionMCF Hints and Tips Comparison of Bandpass Characteristics of MCFs Measurement Conditions Up Conversion Dynamic Range in the 50 MHz BandRX Auxiliary Circuits CN101 CN102 CN103 If Circuits TransmissionKenwood Traditional Transmitting Circuitry FET Final CircuitTransmission Remote Connector High-speed Relay-controlled Antenna TunerMenu N o or N o 1 or DRV Terminal Transmission Output Characteristics of DRV Terminal at 136 kHz and 0 dBm Transmission Comparison C/N Characteristics Local OscillatorDSP Multipurpose 32-bit Floating Point DSPAdvanced AGC Control via if Digital Processing DSPControl Block Diagram of IF-AGC Interference Elimination Within AGC Loop Digital if FilterTypes of Digital if Filters LOW CUTManual Notch Filter and Auto Notch Filter Digital Noise Blanker NB2 Demodulation Modulation Beat Cancel AF Processing DSP-based Auxiliary Circuits for RXNoise Blanker NB2 if Processing Overview of Noise Reduction 11 NB2 Inactive4 NR1 Spectral Subtraction Method AF Processing 13 Conceptual Scheme of NR1 Based on Spectral SubtractionAudio spectrum components swamped by noise 5 NR1 Based on a Line Enhancer AF Processing 16 NR1 Line Enhancer Method Inactive6 NR2 AF Processing 18 NR2 InactiveDSP-based Auxiliary Circuits for TX Speech Processor AF ProcessingDSP-based Auxiliary Circuits Common to TX/RX TX Equalizer & RX Equalizer AF ProcessingSoftware Enhancing Operating Pleasure Extended Data-mode Related FunctionsDrive Out Software Enhancing Operating PleasureSingle Button Toggles if Filters between a and B Operation in the 135 kHz BandMode Selection of Built-in Electronic Keyer Power-on MessageDouble Function Keys and Hold Time Selection Quick Memory Function Cross Tone FunctionPF Keys MIC CN Expansion of Voice Guide Function Optional VGS-1 Required Easy Updating of Firmware Projections on the Rear PanelA Sketch of the TS-590S Structural Features CoolingStructural Features Heat Sink Section LCD Amber and GreenMain Control Knob Main Control KnobExpansive Application Software System ConfigurationsControlling TS-590S from a PC using the COM Connector Windows Related SoftwareControlling TS-590S from a PC using the USB Connector ConnectionControlling TS-590S from a PC on a Remote Site Software HardwareBasic Specifications Inherited from ARCP-480 User InterfacesKNS Kenwood Network Command System Menu FunctionKNS Welcome Message Visual Scan Audio EqualizerBasic Specifications Inherited from ARHP-10 ARHP-590 Amateur Radio Host Program FreewareNew ARUA-10 USB Audio Controller Freeware Disabling AF Gain Control from ARCP-590Setup Basic FunctionsOperation Adjusting Volume Automatic Execution when Windows StartsStarting and Stopping ARUA-10 New ARVP-10H Amateur Radio VoIP Program Freeware 12 Main Window of ARVP-10HSetup of ARVP-10H Host Station Making ARVP-10H host station Online or OfflineSetup of ARVP-10R remote station Connecting and Disconnecting ARVP-10R Remote StationNew Virtual COM Port Driver 16 Device ManagerOptional Accessory PS-60 Regulated DC Power SupplyRectifier Circuit Comparing Rectification WaveformsPage Revision 1.00 May 15
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