Icom IC-746 Instruction Manual page 31

ı TRANSMITTING
[TRANSMIT]
[RF PWR] [CW/RTTY]
Ç SETTINGS FOR RTTY
1 ANT
1 3 5 7 9 20 40 60
S
Po
100%
20 50
ALC
SWR
1 1.5 2 3
P. AMP AGC
1
F S
F1 F2
Set item up/down
SET MODE ITEM AND DEFAULT CONDITION
Band keys
Tuning dial
RTTY
BLANK
VFOA
CH
USING DIFFERENT OPERATING MODES
Before transmitting, monitor your selected operating
frequency to make sure transmitting won't cause inter-
ference to other stations on the same frequency.
Connect RTTY capable TNC and personal computer
or an RTTY terminal (p. 68)
Push a band key to select the desired band.
Push [CW/RTTY] to select RTTY or RTTY-R.
• Push [CW/RTTY] for 2 sec. to toggle between RTTY and
RTTY-R modes.
Rotate [AF] to set audio to a comfortable listening
level.
Push [TRANSMIT] to set the transceiver to the
transmit condition or transmit a SEND signal from
your TNC.
• The P meter indicates transmitted RTTY signal strength.
0
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.
Push [F4] to select the RTTY menu.
Push [F1] or [F2] to select the desired item.
Rotate the tuning dial to select the desired condition.
• See the table below.
Push [MENU] 2 times to return to normal operation.
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
4
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