4
OPERATION
26
ï RTTY (FSK) operation
q Connect a terminal unit as at p. 25.
w Select RTTY (or RTTY-R) mode with [MODE].
e Select the desired FSK tone and shift frequencies
as below.
r Set the desired frequency with the channel selec-
tor.
t Operate the connected PC or TNC (TO).
PRESETTING FOR RTTY
•Tone frequency
q Push [SET] for 1 sec. to enter
quick set mode
.
w Push [∫UP]/[√ DN] several times until “TON 2125”
appears, then rotate the channel selector to select
the desired tone frequency.
• Shift frequency
q Push [SET] for 1 sec. to enter
quick set mode
.
w Push [∫ UP]/[√ DN] several times until “SIFT 170”
appears, then rotate the channel selector to select
the desired tone frequency.
• RTTY 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.
•Push [MODE] for 1 sec. to select RTTY-R (RTTY re-
verse) mode.
ï RTTY (AFSK) operation
q Connect a terminal unit as on p. 25.
w Select SSB (LSB) mode with [MODE].
•Generally, LSB is used on the HF bands.
e Select the desired FSK tone/shift frequencies and
keying polarity the same way as FSK operation.
r Set the desired frequency with the main dial.
t Operate the connected PC or TNC (TO).
is set to 2125 Hz.
Hz are available.
is set to 850 Hz.
170 Hz are available.
is selected.
displayed freq.displayed freq.
