Kenwood 50 MHZ ALL MODE TRANSCEIVER TS-590S User Manual Page 3

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TS-590S I
CONTENTS
1 RECEPTION ..................................... 1
1.1 Type of Conversion ............................1
1.2 Down Conversion...............................3
1.3 Up Conversion....................................8
1.4 RX Auxiliary Circuits...........................9
2 TRANSMISSION............................. 11
2.1 Kenwood Traditional Transmitting
Circuitry ............................................11
2.1.1 IF Circuits .........................................11
2.1.2 FET Final Circuit...............................11
2.2 High-speed Relay-controlled
Antenna Tuner..................................13
2.3 REMOTE Connector ........................13
2.4 DRV Terminal...................................15
3 LOCAL OSCILLATOR ................... 19
4 DSP................................................. 20
4.1 Multipurpose 32-bit Floating Point
DSP ..................................................20
4.2 Advanced AGC Control via IF Digital
Processing........................................21
4.3 Interference Elimination Within AGC
Loop .................................................23
4.3.1 Digital IF Filter ..................................23
4.3.2 Types of Digital IF Filters..................24
4.3.3 Manual Notch Filter and Auto Notch
Filter..................................................25
4.3.4 Digital Noise Blanker (NB2)..............26
4.4 Demodulation ...................................27
4.5 Modulation........................................28
4.6 DSP-based Auxiliary Circuits
(for RX).............................................29
4.6.1 Beat Cancel (AF Processing) ...........29
4.6.2 Noise Blanker NB2
(IF Processing) .................................30
4.6.3 Overview of Noise Reduction ...........31
4.6.4 NR1 (Spectral Subtraction Method)
(AF Processing)................................32
4.6.5 NR1 (Based on a Line Enhancer)
(AF Processing)................................34
4.6.6 NR2 (AF Processing)........................35
4.7 DSP-based Auxiliary Circuits
(for TX) .............................................36
4.7.1 Speech Processor
(AF Processing) ................................36
4.8 DSP-based Auxiliary Circuits
(Common to TX/RX) ........................ 37
4.8.1 TX Equalizer & RX Equalizer
(AF Processing) ................................37
5 SOFTWARE: ENHANCING
OPERATING PLEASURE...............38
5.1 Extended Data-mode Related
Functions ......................................... 38
5.2 Drive Out.......................................... 39
5.3 Single Button Toggles IF Filters
between A and B.............................. 40
5.4 Double Function Keys and Hold Time
Selection .......................................... 41
5.5 Mode Selection of Built-in Electronic
Keyer................................................ 41
5.6 Switchover of Shift Frequency
Interlocked with Change of Pitch
Frequency ........................................ 41
5.7 Power-on Message .......................... 41
5.8 Quick Memory Function ................... 42
5.9 Cross Tone Function........................ 42
5.10 PF Keys ........................................... 42
5.11 Expansion of Voice Guide Function
(Optional VGS-1 Required).............. 44
5.12 Easy Updating of Firmware.............. 45
6 APPEARANCE DESIGN:
“DESIGN CONCEPT” REVEALED
BY DESIGNING ENGINEER...........46
7 STRUCTURAL FEATURES............47
7.1 Cooling............................................. 47
7.2 LCD.................................................. 50
7.3 Main Control Knob ........................... 51
8 EXPANSIVE APPLICATION
SOFTWARE....................................52
8.1 Windows Related Software.............. 52
8.2 System Configurations..................... 52
8.2.1 Controlling TS-590S from a PC using
the COM Connector..........................52
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