Icom IC-7000 instruction manual Rtty reverse mode, Twin peak filter, Mode

4RECEIVE AND TRANSMIT

DRTTY reverse mode

Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE. This reversal can be caused by incorrect TNC connections, settings, commands, etc.

To receive a reversed RTTY signal correctly, select RTTY-R (RTTY reverse) mode.

q Push [MODE] several times to select RTTY mode. w Push [MODE] for 1 sec. to select RTTY or RTTY-R

mode.

[MODE]

		Normal					Reverse
Space Mark								Space Mark
	170		2125		2125					170
	Hz			Hz			Hz			Hz
				BFO		BFO
displayed freq.									displayed freq.

DTwin peak filter

The twin peak filter changes the receive frequency re- sponse by boosting 2 particular frequencies (2125 and 2295 Hz) for better copying of desired RTTY signals.

q Push [MODE] momentarily to select RTTY mode.

•After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and RTTY-R modes.

w Push [AF(SET)] momentarily to enter the set mode menu.

e Push [F-1QS] to enter the quick set mode.

r Push [F-1≤] or [F-2≥] to select “Twin Peak Filter.”

t Rotate [DIAL] to select the twin peak filter function ON or OFF.

•The received audio volume may become greater when the twin peak filter is turned ON.

y Push [Z(MENU/GRP)] twice to return the normal op- erating mode.

[AF]

[MENU/GRP] [F-1] [F-2] [DIAL]

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