Kenwood TS-570S, TS-570D FM Transmission, AM Transmission, TX Deviation Selection, Press Filter

6 BASIC COMMUNICATING

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FM TRANSMISSION

FM operation on HF frequencies solves the problem of how to have long distance voice communication with the finest audio quality. When combined with the full- quieting aspect of FM signals that suppress background noise on the frequency, FM can be the best method for maintaining regular schedules with friends.

Refer, if necessary, to “OPERATING BASICS” beginning on page 13 for receiving details.

1Select the operating frequency.

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

• “FM” appears.

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 13 for receiving details.

1Select the operating frequency.

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

• “AM” appears.

3Press and hold down Mic [PTT], or press [SEND].

• “RX” disappears and “TX” appears.

7	• Refer to “VOX” {page 31} for information on
	automatic TX/RX switching.
	4 Speak into the microphone in a normal tone and
8	level of voice.
	• Speaking too close to the microphone, or too
	loudly, may increase distortion and reduce
9	intelligibility.
	• Microphone gain can be switched between low
	and high for FM using Menu No. 17. Low is
	usually appropriate; however, select high if
10	reports from other stations indicate that your
	audio is weak. The MULTI/CH control has no
	effect in FM mode.
	TX DEVIATION SELECTION
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	Select wide band or narrow band TX deviation
	depending on whether the other station is using wide
	band or narrow band RX deviation. This selection is
12	crucial to avoid audio distortion or insufficient
	intelligibility that the other station will encounter.
	1 Press [FM/AM] to select FM mode.
13	2 Press [FILTER].
	• The current filter selection appears.
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15	3 Turn the MULTI/CH control to select Wide
	(“FM-WID”) or Narrow (“FM-NAR”).
	4 Press [FILTER] to complete the setting.
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	Refer to “COMMUNICATING AIDS” beginning on
	page 29 for additional information about useful functions
	for operating.

3Press [MIC] to activate the Microphone Gain Setting function.

•The current gain level appears.

4Press and hold down Mic [PTT], or press [SEND].

•“RX” disappears and “TX” appears.

•No transmit carrier level adjustment is necessary.

•Refer to “VOX” {page 31} for information on automatic TX/RX switching.

5Speak into the microphone and adjust the MULTI/CH control so that the calibrated power meter slightly reflects according to your voice level.

•Speak in a normal tone and level of voice. Speaking too close to the microphone, or too loudly, may increase distortion and reduce intelligibility.

•You may want to use the Speech Processor. Refer to “SPEECH PROCESSOR” {page 32} for details.

6Release Mic [PTT], or press [SEND] again, to return to the receive mode.

•“TX” disappears and “RX” appears.

7Press [MIC] to quit the Microphone Gain Setting function.

Refer to “COMMUNICATING AIDS” beginning on

page 29 for information about additional useful functions for operating.

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