3 GETTING ACQUAINTED

REAR PANEL

q

ANT 2

GND

EXT

 

 

RX ANT

IF OUT 1

REMOTE

w

e

r

ANT 1

DC 13.8V

AT

 

20.5A

EXT SP

 

 

 

COM

8 Ω

ACC 2

KEY

PADDLE

RT TY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t y u

i o !0

!1 !2

qGND post with wing nut

Connect a heavy gauge wire or copper strap between the ground post and the nearest earth ground {page 3}. Do not connect the ground wire to either your house electrical wiring, or gas or water pipes. A well-grounded transceiver will reduce the risk of interference to television, broadcast radio receivers, and other electronic devices. A good ground can also reduce receiver noise caused by static discharges.

wANT 1 and ANT 2 connectors

Connect the feed lines from your antennas to these connectors. Refer to pages 2 and 63 for details.

ePower Input DC 13.8 V connector

Connect a 13.8 V DC power source {page 3}. Use the supplied cable with a regulated DC power supply. The TS-870S draws less than 20.5 A at maximum transmit output.

rAT connector

Mates with the connector on the cable supplied with the AT-300 antenna tuner. Refer to the instruction manual supplied with this tuner for more information.

tEXT RX ANT jack

Mates with an RCA pin plug for connecting a separate receiver. Menu No. 53 enables this jack. Never transmit into this jack. Signals received by the TS-870S are distributed via a power divider to the TS-870S receive stage and the external receiver. Therefore, connecting an external receiver reduces the signal level.

yIF OUT 1 jack

Mates with an RCA pin plug for connecting the

8.83MHz IF for pan display of an SM-230 Station Monitor {page 6}.

uREMOTE connector

iEXT SP jack

Mates with a 3.5 mm (1/8") diameter, 2-conductor (mono) plug for connecting an external speaker {page 4}. Connecting an external speaker cuts off the audio automatically to the internal speaker.

oACC 2 connector

Mates with a 13-pin male DIN connector for connecting various accessory equipment {page 6}.

!0PADDLE and KEY jacks

Mates with a 6.0 mm (1/4") 3-conductor plug and a

3.5mm (1/8") 2-conductor plug for connecting a key paddle for the internal electronic keyer and another key for CW operation respectively. Read “Keys and Keyboards for CW Operation” {page 4} before connecting to these jacks.

!1RTTY jack

Mates with an RCA pin plug for connecting the RTTY key output from RTTY equipment to operate true frequency shift keying (direct keying) {page 5}.

!2COM connector

Mates with a 9-pin female RS-232C connector for connecting a computer via one of its serial communication ports {page 83}. Functions on the transceiver can be controlled remotely by using a communications program on the computer {pages 5, 83}. Also used with the Quick Data Transfer function {page 65}.

Note: Before using the REMOTE, ACC 2, and COM connectors, remove the protective covers.

Mates with a 7-pin male DIN connector for connecting a linear amplifier {page 5}.

15

Page 21
Image 21
Kenwood TS-870S instruction manual Rear Panel

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.