Bedienungsanleitung Kenwood TS-870S (Seite 50 von 104) (Englisch)

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USB

AGC AUTO SPLIT

RIT

USB

AGC AUTO SPLIT

RIT

The TS-870S will take charge of setting the AGC, using

independent release times that you specify for each

mode. Or, you can have total control by manually

adjusting the AGC yourself from the Front Panel. When

receiving strong signals in AM mode with the AGC OFF,

the clipping action will make reception difficult or

impossible.

To select whether you want Automatic or Manual

control, use Menu No. 01 (AUT/MAN). Select OFF for

Manual control and ON for Automatic control. The

default is Manual (OFF).

■ Changing AGC

Automatic (Menu No. 01 (AUT/MAN) is ON):

The following Menu items are available to change

the AGC release time in Automatic mode:

Manual (Menu No. 01 (AUT/MAN) is OFF):

With Menu No. 01 (AUT/MAN) set to OFF, adjust the

AGC control to set the AGC release time as you

prefer.

• Turning the control clockwise selects a faster

release time and counterclockwise selects a

slower release time.

• To switch OFF the AGC completely, turn the AGC

control fully counterclockwise.

■ Changing AF AGC

The TS-870S offers further control of your receiver

AGC for the FM and AM modes. For these two

modes, you may adjust the AGC release time and

level in the AF stage.

OPERATING AIDS

RECEIVING

RIT (RECEIVE INCREMENTAL TUNING)

RIT provides the ability to change your receive

frequency by ±9.99 kHz in steps of 10 Hz without

changing your transmit frequency. If the Fine Tuning

([FINE]) function is ON, the step size is 1 Hz. RIT

works equally well with all modulation modes and while

using VFO mode or Memory Recall mode.

It’s a good habit to switch OFF the RIT function after a

contact is finished. This returns the receive frequency

to the transmit frequency. It ensures that you don’t

listen by mistake on a different frequency from your

transmit frequency on the next contact. When using

Memory Recall mode, RIT only functions with a memory

channel containing stored data. Since an empty

channel contains no receive frequency, RIT cannot

function.

1 Press [RIT].

•“RIT” and the RIT frequency display appear.

2 Press [CLEAR] to reset, if required, the RIT offset

to 0.

3 Turn the RIT/XIT control to change your receive

frequency.

4 To cancel the RIT function, press [RIT].

Note:

The frequency shift set by the

RIT/XIT

control is also used by

the XIT function.

AGC (AUTOMATIC GAIN CONTROL)

The AGC function selects the time constant for the

automatic gain control circuit. Selecting a slow time

constant will cause the receiver gain and S-meter

readings to react slowly to large input changes. A fast

time constant causes the receiver gain and the S-meter

to react quickly to changes in the input signal. A fast

AGC setting is particularly useful in the following

situations:

• Tuning rapidly

• Receiving weak signals

• Receiving high-speed CW

SSB

FSK

Menu No.

Mode

Default

Selections

OFF, 1 ~ 20

Menu No.

Default

AF AGC

Release

Time

AF AGC

Level

0: Slow

1: Med

2: Fast

0: OFF

1: Min

2: Med

3: High

4: Max

1: Med

1: Min

Function Selections

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Kenwood TS-870S Seite 50

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