Bedienungsanleitung Kenwood TS-2000E (Seite 59 von 150) (Englisch)

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11 SPECIALIZED COMMUNICATIONS

RADIO TELETYPEWRITING (RTTY)

RTTY is the data communications mode with the

longest history. It was originally designed for use with

mechanical teletypewriters which were often used

before personal computers became common. Now

you can easily start operating RTTY with a personal

computer and MCP. Unlike Packet, each time you

type a letter, it is transmitted over the air. What you

typed is transmitted and displayed on the computer

screen of the recipient.

RTTY operation uses frequency shift keying (FSK)

and the 5-bit Baudot code or the 7-bit ASCII code to

transmit information.

For the cable connections, see “RTTY” {page 95}.

For further information, consult reference books

about Amateur Radio.

1 Access Menu No. 38 and select an FSK shift.

• FSK shift is the difference in frequencies

between a mark and a space.

• The 170 Hz default is used on the Amateur

bands.

2 Access Menu No. 39 and select a key-down

polarity.

• Select “NORMAL” to transmit a mark when

keying down or “INVERS” to transmit a space.

The default is “NORMAL”.

3 Access Menu No. 40 and select high tone

(2125 Hz) or low tone (1275 Hz) for mark.

• High tone (default) is commonly used

nowadays.

4 Select an operating frequency.

5 Press [CW/ FSK/ REV] to select FSK.

• “FSK” appears.

6 If necessary to be compatible with the other

station, press [FUNC], [CW/ FSK/ REV] to reverse

the transceiver to the upper sideband.

• “FSR” appears.

• Traditionally, the lower sideband is used for

FSK operation.

• Press [FUNC], [CW/ FSK/ REV] to return to

the lower sideband.

7 Following the instructions provided with your MCP,

enter a command from your computer to select

transmit mode.

• The MAIN band LED changes from green (RX)

to red (TX).

• You may instead press [SEND] to manually

select the transmit mode.

8 Begin sending data from your computer.

• Use Menu No. 50C to select the appropriate AF

output level. The AF control cannot be used

for this adjustment.

• Press [FUNC], [PWR/ TX MONI] to monitor

your signals. Press [FUNC], [PWR/ TX MONI]

again to quit this function.

9 When finished transmitting, enter a command from

your computer to return to receive mode.

• The MAIN band LED changes from red (TX) to

green (RX).

• If you pressed [SEND] in step 7, press [SEND]

again.

The frequencies (measured in kHz) commonly used

for RTTY operation are listed below:

adanaC/.A.S.U

1noigeRURA

)acirfA/eporuE(

0481~00812481~8381

)0953:XD(5463~50630263~0853

)0407:XD(0017~08075407~5307

05101~0410105101~04101

5.99041~070415.99041~08041

01181~0018190181~10181

00112~0701202112~08012

03942~0294292942~02922

05182~0708205182~05082

Note: You may adjust the carrier level when necessary. Press

[FUNC], [MIC/ CAR] to enter the adjustment mode. With a key down

condition, turn the MULTI/ CH control so that the ALC meter reads in

the ALC zone but does not exceed the upper ALC zone limit.

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Kenwood TS-2000E Seite 59

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