D About Rtty Reverse Mode; D Twin Peak Filter - Icom IC-7600 Instruction Manual

4
RECEIVE AND TRANSMIT

D About RTTY reverse mode

Receved characters are occasonally garbled when
the receved sgnal s reversed between Mark and
Space tones. Ths reversal can be caused by ncor-
rect TNC connectons, settng, commands, etc.
To receve a reversed RTTY sgnals correctly, select
the RTTY-R (RTTY Reverse) mode.
➥ Durng the RTTY mode, push and hold [RTTY/
PSK] for 1 sec. to select the RTTY-R mode.
• Check the receved sgnal.

D Twin peak filter

The twn peak flter changes the audo frequency
response by boostng the mark and space frequen-
ces (2125 and 2295 Hz) for better recepton of RTTY
sgnals.
➥ Durng the RTTY mode, push [APF/TPF] to turn
the twn peak flter ON or OFF.
• " " appears n the LCD and the ndcator on
ths swtch lghts green whle the flter s n use.
NOTE: When the twn peak flter s n use, the
receved audo output may ncrease. Ths s a nor-
mal, not a malfuncton.
47
Normal
170 Hz 2125 Hz
Space Mark BFO
Reverse
2125 Hz 170 Hz
Space Mark
BFO
APF/TPF