Operating Rtty (Fsk) - Icom IC-746PRO Instruction Manual

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RECEIVE AND TRANSMIT

Operating RTTY (FSK)

Before operating RTTY, be sure to consult the manual
that come with your TNC.
q Push a band key to select the desired band.
w Push [CW/RTTY] several times to select RTTY.
• After RTTY mode is selected, push [CW/RTTY] for
1 sec. to toggle RTTY and RTTY-R modes.
e Rotate [AF] to set audio to a comfortable listening
level.
r Rotate the tuning dial to tune a desired signal.
• S-meter indicates received signal strength.
• If the received signal cannot be demodulated, try select-
ing RTTY-R mode.
t Push [TRANSMIT] to set the transceiver to the
transmit condition or transmit a SEND signal from
your TNC.
• The TX indicator lights red.
• The Po meter indicates transmitted RTTY signal strength.
y Operate the connected PC or TNC (TU) to transmit
RTTY (FSK) signals.
• Adjust [MIC GAIN] at this step, if necessary.
u Push [TRANSMIT] to return to receive.
D Convenient functions for receive
• Preamp and attenuator (p. 48)
Push [P.AMP/ATT] several times to set the pre-
amp OFF, preamp 1 ON or preamp 2 ON.
• "P.AMP1," "P.AMP2" or "P.AMP" appears when the
preamp 1, preamp 2 or preamp is set to ON, respec-
tively. (depending on operating frequency band)
Push [P.AMP/ATT] for 1 sec. to set the attenuator
ON.
• Push [P.AMP/ATT] momentarily to turn the attenuator
OFF.
• "ATT" appears when the attenuator is set to ON.
• Noise blanker (p. 51)
Push [NB] to turn the noise blanker ON and OFF.
• "NB" appears when the noise blanker is set to ON.
• Push [NB] for 1 sec. to enter noise blanker set mode.
D Convenient functions for transmit
• Transmit quality monitor (p. 57)
Push [MONITOR] to turn the monitor function ON
and OFF.
• "MONI" appears when the monitor function is set to
ON.
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[TRANSMIT] [TX] indicator
[CW/RTTY]
"RTTY" or "RTTY-R" appeared
• Noise reduction (p. 53)
Push [NR] to turn the noise reduction ON and
OFF.
• Rotate [NR] control to adjust the noise reduction level.
• "NR" appears when the noise reduction is set to ON.
• Twin PBT (passband tuning) (p. 52)
Rotate [TWIN PBT] controls (inner/outer).
• Push [PBT C] to clear the settings.
• AGC (auto gain control) (p. 49)
While M1 is selected with [MENU], push
[F1 AGC] several times to select AGC F,
AGC M, AGC S or AGC OFF.
• 1 ⁄ function (p. 21)
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While M1 is selected with [MENU], push
[F3 1/4] to turn the 1 ⁄
Band keys
Tuning dial
function ON and OFF.
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