Icom IC-746PRO Instruction Manual

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Icom IC-746PRO Instruction Manual Manual pdf 14 page image

11PANEL DESCRIPTION Front panelq POWER SWITCH [POWER] Push momentarily to turn power ON.• Turn the optional DC power supply ON in advance. Push for 1 sec. to turn power OFF.w TRANSMIT SWITCH [TRANSMIT]Selects transmitting or receiving.• The [TX] indicator lights red while transmitting and the[RX] indicator lights green when the squelch is open.e HEADPHONE JACK [PHONES]Accepts headphones.• Output power: 5 mW with an 8 Ω load.• When headphones are connected, the internal speakeror connected external speaker does not function.r ELECTRONIC KEYER JACK [ELEC-KEY] (p. 14)Accepts a paddle to activate the internal electronickeyer for CW operation.• Selection between the internal electronic keyer, bug-keyand straight key operation can be made in keyer setmode. (p. 34)• A straight key jack is separately available on the rearpanel. See [KEY] on p. 7.• Keyer polarity (dot and dash) can be reversed in keyerset mode. (p. 34)• 4-channel memory keyer is available for your conve-nience. (p. 30)t MICROPHONE CONNECTOR [MIC]Accepts the supplied or optional microphone.• See p. 100 for appropriate microphones.• See p. 12 for microphone connector information.y RF GAIN CONTROL/SQUELCH CONTROL[RF/SQL] (outer control)Adjusts the RF gain and squelch threshold level.The squelch removes noise output from the speaker(closed condition) when no signal is received.• The squelch is particularly effective for FM. It is alsoavailable for other modes.• 12 to 1 o’clock position is recommended for any settingof the [RF/SQL] control.• The control can be set as ‘Auto’ (RF gain control in SSB,CW and RTTY; squelch control in AM and FM) orsquelch control (RF gain is fixed at maximum) in setmode as follows. (p. 81)• When setting as RF gain/squelch controlRecommended levelRF gainadjustablerangeMaximumRF gainS-metersquelchNoise squelch (FM mode)Squelch isopen.MODESSB, CWRTTYAM, FMAUTORF GAINSQLSQLSET MODE SETTINGSQLSQLRF GAIN + SQLRF GAIN + SQLRF GAIN + SQL(dot)(com)(dash)POWERTRANSMITPHONESELEC-KEYMICNR A/NOTCHTUNER ANTHF/VHF TRANSCEIVERNR NOTCHAFMIC GAIN RF PWR CW PITCHF 1 F 2 F 3 F 4 F 5XFCMP-WGENE 50 021 7 24 8 28 914 510 4 18 63.5 21.8 1 7 3144 ENTMP-RTX RXLOCKTSSPLITF-INPA/BKEY SPEED P.AMP/ATT NB VOX/BK-IN MONITOR CALL LOCK/SPCHRF/SQLi746PROMENU SSB CW/RTTY AM/FM FILTERqwerty u i o !0 !1!4!5!6!7 !3 !2