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4
USING DIFFERENT OPERATING MODES
Band keys
[RF PWR] [CW/RTTY]
[TRANSMIT]
Tuning dial
BLANK
CH
VFOA
ANT
AGC
AMP
P.
SWR
ALC
Po
S
1
20
50
3
3
2
1
1.5
5
7
9
20
40
60
100%
1
1
S
2125
RTTY Mark
RTY
F1
F2
F
RTTY
Set item up/down
2125
RTTY Mark
RTY
170
RTTY Shift
RTY
NORMAL
RTTY Keying
RTY
ı
TRANSMITTING
Ç
SETTINGS FOR RTTY
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause inter-
ference to other stations on the same frequency.
➀
Connect RTTY capable TNC and personal computer
or an RTTY terminal (p. 68)
➁
Push a band key to select the desired band.
➂
Push [CW/RTTY] to select RTTY or RTTY-R.
• Push [CW/RTTY] for 2 sec. to toggle between RTTY and
RTTY-R modes.
➃
Rotate [AF] to set audio to a comfortable listening
level.
➄
Push [TRANSMIT] to set the transceiver to the
transmit condition or transmit a SEND signal from
your TNC.
• The P
0
meter indicates transmitted RTTY signal strength.
➅
Operate the connected PC or TNC (TU) to transmit
RTTY (FSK) signals.
Mark and shift frequencies as well as RTTY keying can
be set for RTTY operation.
➀
Push [F4]
(RTY)
to select the RTTY menu.
➁
Push [F1] or [F2] to select the desired item.
➂
Rotate the tuning dial to select the desired condition.
• See the table below.
➃
Push [MENU] 2 times to return to normal operation.
SET MODE ITEM AND DEFAULT CONDITION
DESCRIPTION
Sets the mark frequency for RTTY operation.
• 1275, 1615 and 2125 Hz are selectable.
Sets the shift frequency for RTTY operation.
• 170, 200 and 425 Hz are selectable.
Sets the keying polarity for RTTY operation.
• NORMAL: key open=mark
key closed=space
• REVERSE: key open=space
key closed=mark
Summary of Contents for IC-746
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