Icom IC-746PRO Instruction Manual

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Icom IC-746PRO Instruction Manual Manual pdf 51 page image

384RECEIVE AND TRANSMITF 1 F 2 F 3 F 4 F 5F 1 F 2 F 3 F 4 F 5F 1 F 2 F 3 F 4 F 5A G C D U P 1 / 4 R T Y S C PD E C F I L S E TA D JR T T Y - F I L O NPush [F4]Push [F2]Appears while the RTTY decoder screen is freezedwith [F2] operation.Push [F3] to erase the displayed characters.D RTTY decoderThe transceiver has an RTTY decoder for Baudot(mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps).An external terminal unit (TU) or terminal node con-nector (TNC) is not necessary for receiving a Baudotsignal.q Push [CW/RTTY] to select RTTY mode.• After RTTY mode is selected, push [CW/RTTY] for 1 sec.to select RTTY-R mode.w Push [MENU] several times to select M1.e Push [F4 RTY] to select RTTY menu.r Push [F4 FIL] to turn the RTTY filter ON.• The RTTY decoder does not function when the RTTY fil-ter is turned OFF.t Push [F2 DEC] to turn the RTTY decoder ON.• RTTY decoder screen appears.y Push [F2] to freeze the current screen.• “H” appears while the function is in use.u Push [F3] for 1 sec. to clear the displayed charac-ters.i Push [MENU] to exit the RTTY decoder screen.• Setting the decoder threshold levelAdjust the RTTY decoder threshold level if some char-acters are displayed when no signal is received.q Call up the RTTY decoder screen as described atabove.w Push [F1 ADJ] to select the threshold level settingcondition.e Rotate the tuning dial to adjust the RTTY decoderthreshold level.• Push [F3] for 1 sec. to select the default condition.r Push [MENU] to exit the RTTY decoder screen.A number of indicating line, the UnShift On Space(USOS) function and new line code can be set inthe RTTY set mode. (p. 39)F 1 F 2 F 3 F 4 F 5F 1 F 2 F 3 F 4 F 5A D Jå 9Push [F1]Threshold level indication