Kenwood TS-570S, TS-570D Cw Break-In, Electronic Keyer, Changing Keying Speed, Auto Weighting

8 COMMUNICATING AIDS

1	CW BREAK-IN
	Break-in allows you to transmit CW without manually
	switching between transmit and receive modes. Two
2	types of Break-in are available, Semi Break-in and Full
	Break-in.
	Semi Break-in:
	When the key contacts open, the transceiver
3	automatically waits for the passage of the time period
	that you have selected. The transceiver then returns to
	the receive mode.
	Full Break-in:
4	As soon as the key contacts open, the transceiver
	returns to the receive mode.
	USING SEMI BREAK-IN OR FULL BREAK-IN
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	1 Press [CW/FSK] to select CW mode.
		•	“CW” appears.
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	2	Press [VOX].
		•	“VOX” appears.
	3	Press [DELAY].
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		• The current setting (Full or delay time) appears.
			The default is Full (“FBk”).
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ELECTRONIC KEYER

This transceiver has a built-in electronic keyer that can be used by connecting a keyer paddle to the transceiver’s rear panel. Consult “Keys and Keyboards for CW Operation” {page 3} for details regarding this connection. This built-in keyer supports lambic operation.

CHANGING KEYING SPEED

The keying speed of the electronic keyer is fully adjustable. Selecting the appropriate speed is important in order to send error-free CW that other operators can copy solidly. Selecting a speed that is beyond your keying ability will only result in mistakes. If you select a speed that is close to the speed used by the other station, you will obtain the best results.

1Press [CW/FSK] to select CW mode.

•“CW” appears.

2Press [KEY].

•The current keying speed appears. The default is 20.

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4Turn the MULTI/CH control to select Full Break-in or a delay time for Semi Break-in.

10		•	Available delay times are from 5 to 100 (50 ms to
			1000 ms) in steps of 5.
	5	Begin sending.
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		•	The transceiver automatically switches to the
			transmit mode.
		• When Full is selected: The transceiver
12			immediately switches to the receive mode when
			the key opens.

•When a delay time is selected: The transceiver

	switches to the receive mode after the delay time
13	that you have selected has passed.
	6 Press [DELAY] again.

Note: Full Break-in cannot be used with the TL-922/922A amplifier.

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3While keying the paddle and listening to the transmit sidetone, turn the MULTI/CH control to select the appropriate speed.

•The selectable range is 0 to 100 in steps of 2. The larger the number, the faster the speed.

4Press [KEY] again to complete the setting.

Note: When using the semi-automatic “Bug” function, the selected speed applies only to the rate that dots are sent.

AUTO WEIGHTING

The electronic keyer can automatically change the dot/ dash weighting. Weighting is the ratio of dash length to dot length. The weighting changes with your keying speed thus making your keying easier for other operators to copy.

Use Menu No. 26 to switch Auto Weighting ON or OFF. The default is ON. When Auto Weighting is OFF, the weighting is locked at 3:1.

■Reversible Auto Weighting

Auto Weighting increases the weighting as you increase your keying speed. However, the electronic keyer also can decrease the weighting as you increase your keying speed.

To switch this function ON, access Menu No. 27, and select ON. The default is OFF.

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