Bedienungsanleitung Kenwood TS-870S (Seite 48 von 104) (Englisch)

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USB

AGC AUTO SPLIT

RIT

Shown below are the data rates and types of

modulation used for HF Packet operation:

Note

: In some countries, F2 modulation at 1200 bps may be used

on the 10-meter band. Consult your national Amateur radio

organization to obtain band plans that specify where in each band

various modes are used.

PACKET FREQUENCIES

AMTOR activity can be found on or near 14075 and

3637.5 kHz. These would also be good starting places

when searching for PacTOR, G-TOR

, or Clover

stations.

This completes the “DIGITAL OPERATION” section.

Refer to “OPERATING AIDS” beginning on page 44 for

information about additional useful functions for

operating.

6 COMMUNICATING

SPLIT-FREQUENCY OPERATION

Split-frequency operation uses one VFO for the receive

frequency and the other VFO for the transmit frequency.

While operating “split”, the VFOs switch automatically

when you switch from receive to transmit and vice

versa. This allows you to move either VFO frequency

independently without affecting the other.

When a rare or desirable station is heard, he or she

may immediately get many responses, all at the same

time. It quickly becomes difficult to separate and

identify both the original calling station (usually a DX

station), and the many responding stations. This “DX

pileup” is exciting, but it is also very inefficient and

frustrating. Often the DX station is lost under the noise

and confusion of many calling stations.

If things grow out of hand, it is the DX station’s

responsibility to take control by announcing that he will

be “listening up 5 (kHz, from his present transmit

frequency)”, or “listening down between 5 and 10

(kHz)”. This usually means the DX station will not

change his transmit frequency, but will begin split

operation in order to tune among the calling stations,

pick out a call sign or two, and begin working those

stations. Since, for the moment, the DX station is

holding his transmit frequency, you should not change

your receive frequency.

If you find that you are suddenly being called as that

rare or desirable station, your ability to control the

situation and complete contacts is much improved by

“going to split”. The following procedure explains how to

operate split frequency on the TS-870S.

1 Press [RX A] or [RX B] or [RX M.CH].

•Your receive frequency will be the current

frequency selected by VFO A, by VFO B, or by

the current memory channel respectively.

• If you press [RX M.CH], then that memory

channel must contain a split channel unless you

select a VFO for the transmit frequency in the

next step. See “MEMORY CHANNEL

STORAGE, Split-frequency Channels” {page 55}.

2 Press [TX A] or [TX B] or [TX M.CH].

•Your transmit frequency will be the current

frequency selected by VFO A, by VFO B, or by

the current memory channel respectively.

• If you pressed either [RX A] or [RX B] in Step 1,

then you must select the other VFO in this step,

or press [TX M.CH].

• When you recall a split memory channel to select

a transmit frequency, the transmit frequency

stored in that channel will be used.

Mode

USB & LSB

300 bps

(AFSK)

1200 bps

(PSK)

1200 bps

(AFSK)

Data Rate

Modulation Type

1800~1830

3620~3635

7080~7100

10140~10150

14095~14099.5

18105~18110

21090~21100

—

28120~28189

—

3590~3600

Digital band

14089~14099, 14101~14112

Digital band

21100~21120

Digital band

28120~28150, 29200~29300

U.S.A./Canada

Frequency (kHz)

IARU Region 1

(Europe/Africa)

Frequency (kHz)

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