APPENDICES

Command

Function

 

 

FB

Sets or reads VFO B frequency.

 

 

FD

Reads RX filter dot display.

 

 

FR

Sets RX (VFO A/B, memory channel).

 

 

FS

Fine function (OFF/ON)

 

 

FT

Sets TX (VFO A/B, memory channel).

 

 

FW

Sets or reads filter bandwidth. For SSB

 

and AM, sets or reads the high-pass filter

 

cut-off frequency.

 

 

GT

Sets or reads AGC time constant.

ID

Reads model number of the transceiver.

IF

Reads status of the transceiver.

IS

Sets or reads IF shift. For SSB and AM,

 

sets or reads the low-pass filter cut-off

 

frequency.

KS

Sets or reads keying speed while using

 

the KY command.

KY

Converts input characters into Morse

 

code.

LK

Sets or reads Lock (OFF/ON).

 

 

LM

DRS recording

 

 

MC

Sets or reads memory channels.

 

 

MD

Sets or reads modes.

MG

Sets or reads MIC gain.

ML

Sets or reads transmit monitor level.

MN

Sets or reads Transmit Monitor

 

(OFF/ON).

 

 

MR

Reads memory.

MW

Writes into memory.

MX

Sets or reads AIP (OFF/ON).

NB

Sets or reads Noise Blanker (OFF/ON).

NL

Sets or reads Noise Blanker level.

NR

Sets or reads Noise Reduction (OFF/ON).

NT

Sets or reads Notch Filter.

PB

DRS playback.

 

 

PC

Sets or reads transmit power.

PL

Sets or reads Speech Processor level.

PR

Sets or reads Speech Processor

 

(OFF/ON).

PS

Sets or reads power (OFF/ON).

RA

Sets or reads RF ATT (attenuator).

RC

Clears RIT frequency.

RD

Lowers RIT frequency.

RG

Sets or reads RF gain.

 

 

Command

Function

 

 

RM

Selects a meter function or reads

meter values.

 

RT

Sets or reads RIT (OFF/ON).

RU

Raises RIT frequency.

 

 

RX

Selects receive mode.

 

 

SC

Sets or reads Scan (OFF/ON).

 

 

SD

Sets or reads Semi Break-in delay time.

SM

S-meter and TX RF meter readings

 

 

SQ

Sets or reads squelch level.

 

 

SR

Resets the transceiver.

 

 

TX

Selects transmit mode.

UP

MIC UP function

VD

Sets or reads VOX delay time.

VR

Triggers the Voice Synthesizer for

 

message output.

 

 

VX

Sets VOX (OFF/ON).

XT

Sets or reads XIT (OFF/ON).

ERROR MESSAGES

In addition to the Answer Command, the transceiver can send the following error messages:

Error

Reason for Error

Message

 

?;

• Command syntax was incorrect.

 

• Command was not executed due to

 

the current status of the transceiver

 

(even though the command syntax

 

was correct).

 

Note: Occasionally this message may not

 

appear due to microprocessor transients in the

 

transceiver.

 

 

E;

A communication error occurred such

 

as an overrun or framing error during a

 

serial data transmission.

 

 

O;

Receive data was sent but processing

 

was not completed.

 

 

COMMAND USE PRECAUTIONS

1Do not use the control characters 00 to 1Fh since they are either ignored or cause a Ò?Ó answer.

2Program execution may be delayed while turning the Tuning control rapidly.

3Receive data is not processed if the frequency is entered from the keypad.

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Kenwood TS-870S instruction manual Error Messages, Command USE Precautions

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.