QUICK CHANGES

To move up or down in frequency quickly, use the M.CH/VFO.CH control.

M.CH/VFO.CH

SEMI AIP

AGC

AUTO

PROC

MONI

MENU

SPLIT

TONE

NB

CTRL

AUTO

BEAT

 

 

 

 

 

 

 

 

 

A B

RIT

XIT

WIDTH SHIFT

NOTCH

CANCEL

N.R.

 

TX EQ.

 

 

 

 

 

 

 

 

 

 

LO/WIDTH

FILTER

HI/SHIFT

LSB

USB CW

R

FSK FM

AM

M. SCR

PRG SCAN F. LOCK

FINE MHz

 

 

 

 

 

 

AIR

 

 

 

AT TUNE

 

 

 

 

 

RIT

XIT

 

CLEAR

NB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODE

 

 

A=B

MENU

 

 

 

 

 

 

 

 

 

TF-SET

LSB

 

 

 

RIT/XIT

 

 

AF

RF

 

 

 

 

 

 

 

 

 

 

 

4

6

 

 

 

 

 

 

/USB

 

 

RX

TX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

8

 

 

 

 

 

 

CW/– R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

0

1 0

 

 

 

 

 

 

FSK

 

 

 

M.CH/VFO.CH

 

 

NB

SQL

 

 

 

 

 

 

/– R

 

 

 

 

 

 

 

4

6

 

 

 

 

 

 

 

 

 

 

M.CH

 

 

 

 

 

 

 

 

 

 

 

FM/AM

 

 

 

 

 

2

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1MHz

DOWN

 

UP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1 0

¥Turn the M.CH/VFO.CH control clockwise to increase the frequency; counterclockwise to decrease the frequency.

Due to the large step sizes available, you can quickly move across the band. When the minimum or maximum receive frequency for the transceiver is reached, turning the M.CH/VFO.CH control will not decrease or increase respectively the frequency.

Menu No. 44 (STEP.ADJ) affects how the M.CH/VFO.CH control tunes. When Menu No. 44 is ON (default), rounding occurs on the first step (ÒclickÓ) of the M.CH/VFO.CH control as shown below:

Step Adjust

 

Channel Step

Rounding Effect

 

(Menu No. 44)

 

(Menu No. 43)

 

 

ON

 

10 kHz

1 kHz, 100 Hz, and

 

10 Hz digits change to 0.

 

 

 

 

 

 

1 kHz digit changes to 0

ON

 

5 kHz

or 5, and 100 Hz and

 

 

 

10 Hz digits change to 0.

 

 

 

 

ON

 

1 kHz

100 Hz and 10 Hz digits

 

change to 0.

 

 

 

 

 

 

 

Example 1: Menu No. 44 (STEP.ADJ) is ON

¥Menu No. 43 (CH. STEP): 10 kHz step size

¥Selected frequency: 14.261.73 MHz

Turning the M.CH/VFO.CH control clockwise one step changes the frequency to 14.270.00 MHz, and one more step changes the frequency to 14.280.00 MHz. The rounding occurred on the first step.

Similarly, with 14.261.73 MHz selected, turning this control counterclockwise one step changes the frequency to 14.260.00 MHz, and one more step changes the frequency to 14.250.00 MHz. Again, the rounding took place on the first step.

Example 2: Menu No. 44 (STEP.ADJ) is OFF

¥Menu No. 43 (CH. STEP): 10 kHz step size

¥Selected frequency: 14.261.73 MHz

Turning the M.CH/VFO.CH control clockwise one step changes the frequency to 14.271.73 MHz, and one more step changes the frequency to 14.281.73 MHz. No rounding occurs.

With 14.261.73 MHz selected, turning this control counterclockwise one step changes the frequency to 14.251.73 MHz, and one more step changes the frequency to 14.241.73 MHz. Again, no rounding occurs.

4 OPERATING BASICS

Changing Step Sizes

Select the step size that you prefer for the M.CH/VFO.CH control via Menu No. 43 (CH. STEP). Available step sizes are 1 kHz, 5 kHz and 10 kHz. The default is 10 kHz.

Within the AM broadcast band, the step size automatically defaults to 9 kHz (U.S.A./ Canada versions: 10 kHz) for the AM mode. This step size can be switched between 9 (ON) and 10 kHz (OFF) via Menu No. 42 (BC. STEP). Selecting OFF in Menu No. 42 allows you to use the step size specified via Menu No. 43 (1, 5, or 10 kHz). While in the AM broadcast band, changing the step size via Menu No. 42 will change the selected frequency to the nearest broadcast channel on the next use of the M.CH/VFO.CH control.

If you enjoy listening to international shortwave broadcasters, the M.CH/VFO.CH control is also the best way to manually scan these bands. Select the 5 kHz step size via Menu No. 43 (CH. STEP) since most shortwave broadcasters are spaced 5 kHz apart. Set Menu No. 44 to ON. To listen to a broadcaster on a channel that is not a 5 kHz multiple, use the Tuning control to zero-in to the exact frequency.

FINE TUNING

For SSB, CW, and FSK modes, the Tuning control normally tunes through 10 kHz per revolution of the control. For FM and AM modes, one revolution of the Tuning control changes the frequency by 100 kHz. These tuning rates can be halved via Menu No. 41 (F.STEP).

In addition, the Fine Tuning function reduces the step size of the Tuning control further which allows you to tune more slowly and precisely.

Fine Tuning

SSB/ CW/ FSK

 

 

 

 

 

 

 

AM/ FM

(Menu No. 41: 10 kHz) Tuning Steps

 

 

Tuning Steps

OFF

10 Hz

 

 

 

 

 

 

 

 

100 Hz

ON

1 Hz

 

 

 

 

 

 

 

 

 

10 Hz

ENTER

TF-SET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

40

 

60 dB

 

VOX

FULL

SEMI AIP

AGC AUTO PROC MONI

 

 

ATT

PWR

 

 

100

W

 

M.CH

 

 

 

 

ANT

DOWN

UP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

dB

 

 

AUTO

LSB USB CW R FSK FM AM

 

VOX

FULL/SEMI

AIP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HF TRANSCEIVER

 

TS-870

 

 

 

ON AIR

AT TUNE

 

AT TUNE

THRU/AUTO

 

METER

PROC

MONI

1

 

CH 1

6

M.IN

 

 

 

 

SEND

 

AGC

KEY SPEED

PROC

MONI

 

 

 

 

 

 

ENTER

 

TF-SET

 

 

 

 

4

6

2

 

CH 2

7

M>VFO

 

 

 

 

 

2

 

8

3

 

CH 3

8

SCAN

 

 

 

 

PHONES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SLOW

 

FAST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

0

1 0

4

 

CH 4

9

CLR

 

 

 

 

MIC

 

CAR

DELAY

MIC

PWR

 

 

 

 

 

 

 

 

 

 

 

 

4

6

4

6

5

 

REC

0 F.LOCK

 

 

 

 

 

2

 

8 2

 

8

 

 

QUICK MEMO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FINE

 

1MHz

FINE

1MHz

 

0

1 0

0

1 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M.IN

 

 

MR

 

 

 

Press [FINE].

¥ÒFINEÓ lights.

AGC AUTO

USB

FINE

¥The Fine Tuning function toggles ON and OFF each time [FINE] is pressed.

21

Page 27
Image 27
Kenwood TS-870S instruction manual Quick Changes, Operating Basics, Fine Tuning, Changing Step Sizes

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.