Bedienungsanleitung Kenwood TS-480SAT (Seite 37 von 104) (Englisch)

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6 BASIC COMMUNICATIONS

CW TRANSMISSION

CW operators know that this mode is very reliable

when communicating under worst conditions. It may

be true that newer digital modes rival CW as being

equally as useful in poor conditions. These modes,

however, do not have the long history of service nor

the simplicity that CW provides.

This transceiver has a built-in electronic keyer that

supports a variety of functions. For details on using

these functions, refer to “ELECTRONIC KEYER”

{page 39}.

If necessary, refer to “OPERATING BASICS”,

beginning on page 18, for details on how to receive.

1 Select the operating frequency.

2 Press [MODE] until “CW” or “CWR” appears.

•To precisely tune in another station, use Auto

Zero-beat. Refer to “AUTO ZERO-BEAT”

{below}.

3 Press [VOX/ 8] to activate the CW break-in

function.

• “VOX” appears.

• Refer to “CW BREAK-IN” for further information

on automatic TX/ RX switching {page 39}.

4 Begin sending the message.

• As you transmit, you should hear a sidetone

that lets you monitor your own transmission.

• The LED lights red as you send the message.

5 Stop sending the message to return to Reception

mode.

• The LED lights green or turns off, depending

on the SQL control setting.

AUTO ZERO-BEAT

Use Auto Zero-beat before transmitting to tune in a

CW station. Auto Zero-beat automatically and exactly

matches your transmit frequency with the station you

are receiving. Neglecting to do this will reduce your

chances of being heard by the other station.

1 Tune to the CW signal using the Tuning control.

2 Press [BC/ CW.T] (1 s) to start Auto Zero-beat

while CW is selected for the operating mode.

• “CW TUNE” appears.

•Your reception frequency automatically

changes so that the pitch (tone) of the received

signal exactly matches the TX sidetone/ RX

pitch frequency that you have selected. Refer

to “TX SIDETONE/ RX PITCH FREQUENCY”

{below}.

• When matching is completed, “CW TUNE”

disappears.

• If matching is unsuccessful, the previous

frequency is restored.

3 To quit Auto Zero-beat, press [CLR/ MTR] or

press [BC/ CW.T] again.

Note:

◆

You cannot start Auto Zero-beat if you have selected 1.0 kHz or

wider for the DSP filter bandwidth {page 46}.

◆

When using Auto Zero-beat, the matching error is within

50 Hz

in most cases.

◆

Auto Zero-beat may fail if the keying speed of the target station is

too slow or some interference is present.

◆

When the RIT function is ON, only RIT frequencies change to

make the Auto Zero-beat adjustment.

TX SIDETONE/ RX PITCH FREQUENCY

As you send CW, you will hear tones from the

transceiver speaker. These are called TX

(transmission) sidetones. Listening to these tones,

you can monitor what you are transmitting. You may

also use the tones to ensure that your key contacts

are closing, the keyer is functioning, or to practice

sending without actually putting a signal on the air.

RX (reception) pitch refers to the frequency of CW

that you hear after tuning in a CW station.

On this transceiver, the frequency of the sidetone and

RX pitch are equal and selectable. Access Menu No.

34 to select the frequency that is most comfortable for

you. The selectable range is from 400 Hz to 1000 Hz

in steps of 50 Hz (default is 800 Hz).

To change the volume of the TX sidetone, access

Menu No. 13. The selections range from 1 to 9 and

OFF (default is 5).

Note:

The position of the

control does not affect the volume of

the TX sidetone.

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