Icom IC-746PRO Instruction Manual

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Icom IC-746PRO Instruction Manual Manual pdf 48 page image

354 RECEIVE AND TRANSMIT Operating RTTY (FSK)Before operating RTTY, be sure to consult the manualthat 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] for1 sec. to toggle RTTY and RTTY-R modes.e Rotate [AF] to set audio to a comfortable listeninglevel.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 thetransmit condition or transmit a SEND signal fromyour TNC.• The TX indicator lights red.• The Po meter indicates transmitted RTTY signal strength.y Operate the connected PC or TNC (TU) to transmitRTTY (FSK) signals.• Adjust [MIC GAIN] at this step, if necessary.u Push [TRANSMIT] to return to receive.Band keys[TX] indicator[TRANSMIT][CW/RTTY] Tuning dial“RTTY” or “RTTY-R” appearedD 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 thepreamp 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 attenuatorON.• Push [P.AMP/ATT] momentarily to turn the attenuatorOFF.• “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.• Noise reduction (p. 53) Push [NR] to turn the noise reduction ON andOFF.• 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.• 1⁄4 function (p. 21) While M1 is selected with [MENU], push[F3 1/4] to turn the 1⁄4 function ON and OFF.D Convenient functions for transmit• Transmit quality monitor (p. 57) Push [MONITOR] to turn the monitor function ONand OFF.• “MONI” appears when the monitor function is set toON.