Kenwood TS-870S Introduction, Thank YOU, DSP Maximum SIGNAL/ Minimum Noise, Features

INTRODUCTION

THANK YOU!

The TS-870SIntelligent Digital Enhanced Communications System was developed by a team of engineers determined to continue the tradition of excellence and innovation in KENWOOD HF transceivers.

Taking maximum advantage of Digital Signal Processing technology, the TS-870S introduces operating tools like Auto Notch, Beat Cancel, and Noise Reducer. When coupled with its IF Shift, Noise Blanker, and Advanced Intercept Point functions, you will enjoy a critical edge as you fight QRM and QRN in the new solar cycle. In addition, the convenience of a built-in RS-232C connector can transport your shack into the world of remote transceiver control via computer.

But first, tame your ego and enthusiasm temporarily Ñ read every page of this book. Consider this manual to be a personal tutorial from the designers; allow it to guide you through the learning process now, then act as a reference in the coming years. Though user friendly, the TS-870S is technically sophisticated and some features may be new to you. Your reward for your diligence will be mastery of the TS-870S in the shortest time possible with maximum fun.

As you continue exploring Amateur radio, thank you for allowing the KENWOOD family to join you in this chapter of your adventure.

DSP —

MAXIMUM SIGNAL/ MINIMUM NOISE

The TS-870S design includes a 2-channel Sigma-delta A/D converter, two 2-channel Sigma-delta D/A converters, and a 2-channel advanced single-bit D/A converter. Operating at a clock rate of 40 MHz, DSP works for you whether you use SSB, CW, FM, or any other mode. The adaptive filter functions include Auto Notch, Line Enhance, and Beat Cancel.

DSP is the most effective way of using current technology to separate what you want from what you donÕt want. While receiving, you hear the most signal and the least noise. While transmitting, you emit only the desired audio components of the modulation without adding distortion. The transmit equalizer combines high boost, bass boost, and comb filter functions to further improve your signal.

With DSP, you will hear clear receive signals that are covered by noise on conventional equipment. The enhancement of the receive signal is due to the reduction of atmospheric and white noise, and to rejection of adjacent frequency interference including

FEATURES

¥Employs Digital Signal Processing (DSP) techniques to significantly improve the quality of received and transmitted signals.

¥Includes extensive user-adjustable digital and analog filtering functions for combating all forms of received interference.

¥Allows total customization of transmitted audio through use of functions such as Transmit Equalizer.

¥Introduces a built-in RS-232C port for directly interfacing to a computer. Supports computer control of functions at a user-selectable transfer rate between 1200 and 57600 bps inclusive.

¥Streamlines function setup by presenting an intuitive Menu System for function configuration and control.

¥Conveniently allows ANTENNA1/ANTENNA2 selection from the Front Panel.

¥Directly addresses CW operatorsÕ interests by including a full-function K-1 Logikey complete with test mode, semi-automatic mode, and popular keyer emulations. The Rear Panel is equipped with a PADDLE jack and a KEY jack for connecting a paddle, an external keyer, or a keyboard.

¥Provides an antenna tuner that can easily be inserted into or removed from the transmit and receive paths.

SUPPLIED ACCESSORIES

Accessory	Part Number	Quantity
Microphone	T91-0352-XX	1
DC power cable	E30-3157-XX	1
7-pin DIN plug	E07-0751-XX	1
13-pin DIN plug	E07-1351-XX	1
Fuse (25 A)	F05-2531-XX	1
Fuse (4 A)	F06-4029-XX	1
Spacer	J02-0479-XX	2
Screw	N91-3016-XX	2
Instruction manual	B62-1536-XX	1
Schematic/block diagrams1	B52-0606-XX	1
Warranty card	Ñ	1
(U.S.A., Canada, and
Europe only)

1France, Holland: B52-0607-XX

heterodynes. This capability of DSP to Òclean upÓ the environment surrounding the desired signal has a significant effect. The signal you are trying to receive will seem stronger and clearer even though the S-meter reads the same. Those tired of listening to interference of all kinds while operating may think a little magic is being used.

You can effectively lengthen the front feet of the TS-870S. Remove the screws that fasten the front feet to the transceiver. As shown, install the supplied spacers and the front feet by using the supplied screws. The removed screws are not required, but save them in case you decide to remove the spacers in future.

These sides must face the TS-870S case.

Supplied spacer

Supplied screw

1