FM TRANSMISSION

38

FM REPEATER OPERATION

38

Selecting Subtone Frequency

39

Continuous or Burst Subtones?

39

AM TRANSMISSION

40

DIGITAL OPERATION

40

RTTY (FREQUENCY SHIFT KEYING)

40

ERROR-CHECKING MODES (AMTOR/ PACKET/

PACTOR/ G-TOR/ CLOVER

41

SPLIT-FREQUENCY OPERATION

42

TF-SET (TRANSMIT FREQUENCY SET)

43

SATELLITE OPERATION

43

CHAPTER 7

OPERATING AIDS

44

RECEIVING

...........................................................

44

RIT (RECEIVE INCREMENTAL TUNING)

44

AGC (AUTOMATIC GAIN CONTROL)

44

Changing AGC

44

Changing AF AGC

44

TRANSMITTING

45

VOX (VOICE-OPERATED TRANSMIT)

45

Microphone Input Level Adjustment

45

Delay Time Adjustment

45

TRANSMIT INHIBIT

45

XIT (TRANSMIT INCREMENTAL TUNING)

45

SPEECH PROCESSOR (SSB/AM)

46

CHANGING FREQUENCY WHILE

 

TRANSMITTING

46

TRANSMIT MONITOR

46

CUSTOMIZING TRANSMIT SIGNAL

 

CHARACTERISTICS (SSB/AM)

47

Changing Transmit Bandwidth

47

Transmit Bandshift

47

Equalizing Transmit Audio

47

Microphone AGC

47

AUTOMATIC MODE

48

AUTOMATIC MODE BOUNDARIES

48

USING AUTOMATIC MODE

48

AUTOMATIC ANTENNA TUNER

49

PRESETTING (INTERNAL TUNER ONLY)

49

INTERNAL TUNER

49

AT-300 EXTERNAL TUNER (OPTIONAL)

50

COMPUTER [\ TRANSCEIVER INTERFACE ...

50

COMMUNICATION PARAMETERS

50

CHAPTER 8

REJECTING INTERFERENCE

51

DSP TOOLS

..........................................................

51

SLOPE TUNING (SSB/AM)

51

IF SHIFT (CW)

51

CHANGING RECEIVE BANDWIDTH

 

(CW/FSK/FM)

52

ADAPTIVE FILTERS

52

AUTO NOTCH (SSB)

52

BEAT CANCEL (SSB/AM)

52

NOISE REDUCTION (SSB/CW/FSK/AM)

53

SETTING SPAC TIME

53

NOISE BLANKER

53

AIP (ADVANCED INTERCEPT POINT)

53

ATTENUATOR

53

CHAPTER 9

MEMORY FEATURES

54

MICROPROCESSOR MEMORY BACKUP

54

CONVENTIONAL OR QUICK MEMORY?

54

CONVENTIONAL MEMORY

54

MEMORY CHANNEL DATA

54

MEMORY CHANNEL STORAGE

54

Simplex Channels

54

Split-Frequency Channels

55

MEMORY CHANNEL RECALL

55

Quick Channel Search

55

Temporary Frequency Changes

56

MEMORY CHANNEL SCROLL

56

MEMORY TRANSFER

56

Memory \ VFO Transfers

56

Channel to Channel Transfers

57

ERASING MEMORY CHANNELS

57

Full Reset

57

STORING SCAN LIMITS IN CH 99

58

Confirming Start/End Frequencies

58

Programmable VFO Function

58

QUICK MEMORY

59

STORING INTO QUICK MEMORY

59

RECALLING FROM QUICK MEMORY

59

TEMPORARY FREQUENCY CHANGES

59

QUICK MEMORY \ VFO

59

CHAPTER 10

SCAN

60

PROGRAM SCAN

60

SCAN HOLD

60

CONFIRMING START/END LIMITS

60

MEMORY SCAN

61

BUSY FREQUENCY STOP

61

Scan Resume Methods

61

ALL-CHANNEL SCAN

61

GROUP SCAN

62

MEMORY CHANNEL LOCKOUT

62

SETTING SCAN SPEED

62

iii

Page 5
Image 5
Kenwood TS-870S instruction manual Rejecting Interference, Memory Features, Scan

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.