Bedienungsanleitung Kenwood TS-870S (Seite 46 von 104) (Englisch)

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6 COMMUNICATING

AM TRANSMISSION

Each mode used on the HF Amateur bands has its own

advantages. Although long distance DX contacts may

be less common while using AM, the superior audio

quality characteristic of AM operation is one reason why

some prefer this mode.

When looking for others using AM, check the following

frequencies first:

• 3885, 7290, 14286, 21390, and 29000~29200 kHz

Refer, if necessary, to “OPERATING BASICS”

beginning on page 19 for complete receiving details for

any mode.

1 Select the operating frequency.

2 Press [FM/AM] to select AM mode.

3 Select the ALC meter function by pressing [METER].

4 Press and hold down the Microphone [PTT] switch,

or press [SEND].

• The “ON AIR” indicator lights.

• Refer to “VOX” {page 45} for information on

automatic TX/RX switching.

5 Without speaking, adjust the CAR control so that the

ALC meter just begins to indicate.

6 Speak into the microphone and adjust the MIC gain

control so that only a few segments on the ALC

meter light.

• Speak in a normal tone and level of voice.

Speaking too close to the microphone, or too

loudly, may increase distortion and reduce

intelligibility.

7 If you want to use speech processing, press [PROC]

to switch on the Speech Processor and adjust as

described on page 46.

8 Release the Microphone [PTT] switch, or press

[SEND] again, to return to the receive mode.

• The “ON AIR” indicator goes out.

This completes the “AM TRANSMISSION” section.

Refer to “OPERATING AIDS” beginning on page 44 for

information about additional useful functions for

operating.

DIGITAL OPERATION

Since Multimode Communications Processors (MCP)

have become popular, many Amateurs enjoy operating

using a number of digital modes. The power and variety

of Amateur radio increased greatly with the

development of MCP that can use your TS-870S

transceiver as the communications link.

For example, it’s possible to take advantage of the

camaraderie found on RTTY, then move to Packet to

access an RBBS (Radio Bulletin Board System) to

download a recent shareware program you’ve heard

about, and then move again to AMTOR or PacTOR to

deposit mail in a regional mailbox for forwarding. After

that, you may switch to G-TOR

or Clover for a

lightning fast file transfer with a friend.

Consult ACCESSORY CONNECTIONS {pages 5~7}

before proceeding if you need installation information. It

is assumed here that you have all hardware, and

software if necessary, already correctly installed.

RTTY (FREQUENCY SHIFT KEYING)

Important Menu items to be aware of before beginning

to operate RTTY include the following:

•Menu No. 62 (FSK.SHFT): Selects 170, 200, 425,

or 850 Hz shift. The 170 Hz shift default is used on

the Amateur bands.

• Menu No. 63 (MARK.POL): Allows reversal of the

key-down polarity between mark and space. The

default is space (OFF).

• Menu No. 64 (FSK.TONE): Switches between a

high tone (2125 Hz) and a low tone (1275 Hz). The

default is 2125 Hz. The high tone is commonly used

nowadays.

1 Select the operating frequency.

2 Press [FSK/–R] to select FSK mode.

3 Select the ALC meter function by pressing [METER].

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