User manual ICOM IC-746

INSTRUCTION MANUAL VHF/HF ALL MODE TRANSCEIVER i746 This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. IMPORTANT READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL--This manual contains important safety and operating instructions for the IC-746. PRECAUTIONS RWARNING! HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during transmission. This may result in an electric shock or burn. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. During mobile operation, DO NOT operate the transceiver without running the vehicle's engine. When transceiver power is ON and your vehicle's engine is OFF, the vehicle's battery will soon become exhausted. Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications. BE CAREFUL! The heatsink will become hot when operating the transceiver continuously for long periods. BE CAREFUL! If a linear amplifier is connected, set the transceiver's RF output power to less than the linear amplifier's maximum input level, otherwise, the linear amplifier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturer's microphones have different pin assignments and connection to the IC-746 may damage the transceiver. RNEVER apply AC to the [DC13.8V] socket on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] socket on the transceiver rear panel. This could cause a fire or ruin the transceiver. RNEVER let metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. NEVER allow children to play with equipment containing a radio transmitter. NEVER expose the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with temperatures below ­10°C (+14°F) or above +60°C (+140°F). Be aware that temperatures on a vehicle's dashboard can exceed 80°C (+176°F), resulting in permanent damage to the transceiver if left there for extended periods. AVOID placing the transceiver in excessively dusty environments or in direct sunlight. EXPLICIT DEFINITIONS The explicit definitions described below apply to this instruction manual. DEFINITION Personal injury, fire hazard or electric RWARNING shock may occur. CAUTION NOTE Equipment damage may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. The IC-746's which display the "CE" symbol, comply with the essential requirements of the 89/336/EEC directive for Electromagnetic Compatibility. This compliance is based on conformity with the ETSI specification prETS300 684 (EMC product standard for Commercially Available Amateur Radio Equipment). BUILT-IN DSP DSP WORD The IC-746's DSP digitally transposes receive audio components in all modes of operation to produce desired AF frequency characteristics at the IF stage of the transceiver. DSP provides the following functions: Noise reduction--reduces various types of noise and enhances receive signal components only. Automatic notch filter--automatically reduces single beat interference and protects the receive voice signals. Selectable APF--a total of 3 passband widths are selectable (80/160/320 Hz), for super-narrow filter APF functions in CW mode. The APF center frequency is adjustable. ii TABLE OF CONTENTS IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . EXPLICIT DEFINITIONS . . . . . . . . . . . . . . . . . . . . . BUILT-IN DSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . ii ii ii ii iii 7-3 Transferring a memory to VFO . . . . . . . . . . . 7-4 Clearing a memory . . . . . . . . . . . . . . . . . . . . 7-5 Selecting the call channel . . . . . . . . . . . . . . 7-6 Programming a memory . . . . . . . . . . . . . . . . 7-7 Programming the call channel . . . . . . . . . . . 7-8 Programming scan edges . . . . . . . . . . . . . . 7-9 Assigning memory names . . . . . . . . . . . . . . 7-10 Memo pads . . . . . . . . . . . . . . . . . . . . . . . . 50 50 51 51 52 52 53 54 1 PANEL DESCRIPTION . . . . . . . . . . . . . . . . . . 2­7 1-1 Front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1-2 Rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1-3 Function display . . . . . . . . . . . . . . . . . . . . . . . 7 2 MENU SELECTION . . . . . . . . . . . . . . . . . . . . . 8­9 2-1 Menu set 1 flow chart . . . . . . . . . . . . . . . . . . . 8 2-2 Menu set 2 flow chart . . . . . . . . . . . . . . . . . . . 9 3 BASIC OPERATION . . . . . . . . . . . . . . . . . . 10­17 3-1 Before operating . . . . . . . . . . . . . . . . . . . . . . 10 3-2 Squelch and receive (RF) sensitivity . . . . . . 12 3-3 Selecting VFO/memory mode . . . . . . . . . . . 13 3-4 Toggling between VFO A/B and transferring contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3-5 Setting a band and frequency . . . . . . . . . . . 14 3-6 Selecting an operating mode . . . . . . . . . . . . 17 4 USING DIFFERENT OPERATING MODES . 18­36 4-1 Operating SSB . . . . . . . . . . . . . . . . . . . . . . . 18 4-2 Operating CW . . . . . . . . . . . . . . . . . . . . . . . . 20 4-3 Operating RTTY (FSK) . . . . . . . . . . . . . . . . . 28 4-4 Operating AM . . . . . . . . . . . . . . . . . . . . . . . . 30 4-5 Operating FM . . . . . . . . . . . . . . . . . . . . . . . . 32 4-6 Repeater operation . . . . . . . . . . . . . . . . . . . 34 4-7 Packet operation . . . . . . . . . . . . . . . . . . . . . . 36 5 FUNCTIONS FOR RECEIVE . . . . . . . . . . . . 37­42 5-1 Simple band scope . . . . . . . . . . . . . . . . . . . . 37 5-2 Preamp and attenuator . . . . . . . . . . . . . . . . 38 5-3 RIT function . . . . . . . . . . . . . . . . . . . . . . . . . 38 5-4 AGC function . . . . . . . . . . . . . . . . . . . . . . . . 39 5-5 1/4 function . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5-6 NB function . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5-7 Noise reduction . . . . . . . . . . . . . . . . . . . . . . 40 5-8 Auto notch (ANF) function . . . . . . . . . . . . . . 40 5-9 Dial lock function . . . . . . . . . . . . . . . . . . . . . 40 5-10 Twin PBT . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5-11 Selecting IF filters . . . . . . . . . . . . . . . . . . . . 42 6 FUNCTIONS FOR TRANSMIT . . . . . . . . . . . 43­48 6-1 VOX function . . . . . . . . . . . . . . . . . . . . . . . . . 43 6-2 Break-in function . . . . . . . . . . . . . . . . . . . . . 44 6-3 :TX function . . . . . . . . . . . . . . . . . . . . . . . . 45 6-4 Monitor function . . . . . . . . . . . . . . . . . . . . . . 45 6-5 Speech compressor . . . . . . . . . . . . . . . . . . . 46 6-6 Split frequency operation . . . . . . . . . . . . . . . 47 6-7 Quick split function . . . . . . . . . . . . . . . . . . . . 48 7 MEMORY CHANNELS . . . . . . . . . . . . . . . . 49­54 7-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 7-2 Memory channel selection . . . . . . . . . . . . . . 49 8 SCAN OPERATION . . . . . . . . . . . . . . . . . . . 55­58 8-1 Scan types . . . . . . . . . . . . . . . . . . . . . . . . . . 55 8-2 Programmed scan and fine programmed scan . . . . . . . . . . . . . . . . . 56 8-3 Memory scan . . . . . . . . . . . . . . . . . . . . . . . . 57 8-4 Select memory scan . . . . . . . . . . . . . . . . . . . 57 8-5 :F scan and fine :F scan . . . . . . . . . . . . . . 58 9 INTERNAL ANTENNA TUNER . . . . . . . . . . . . . 59 9-1 Before operating . . . . . . . . . . . . . . . . . . . . . . 59 9-2 Tuner operation . . . . . . . . . . . . . . . . . . . . . . . 59 10 SET MODE . . . . . . . . . . . . . . . . . . . . . . . . . 60­64 10-1 Selecting set mode . . . . . . . . . . . . . . . . . . . 60 10-2 Set mode items . . . . . . . . . . . . . . . . . . . . . 60 11 ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . 65­66 11-1 Tuning dial brake . . . . . . . . . . . . . . . . . . . . 65 11-2 Frequency calibration . . . . . . . . . . . . . . . . . 65 11-3 Measuring SWR . . . . . . . . . . . . . . . . . . . . . 66 11-4 Adjusting the LCD . . . . . . . . . . . . . . . . . . . 66 12 SETUP AND CONNECTIONS . . . . . . . . . . 67­75 12-1 Front panel . . . . . . . . . . . . . . . . . . . . . . . . . 67 12-2 Rear panel . . . . . . . . . . . . . . . . . . . . . . . . . 68 12-3 Selecting a location . . . . . . . . . . . . . . . . . . 69 12-4 Power supply connections . . . . . . . . . . . . . 69 12-5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . 70 12-6 Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 12-7 Data communications . . . . . . . . . . . . . . . . . 72 12-8 RTTY connections . . . . . . . . . . . . . . . . . . . 73 12-9 Remote jack . . . . . . . . . . . . . . . . . . . . . . . . 74 13 OPTIONAL INSTALLATIONS . . . . . . . . . . 76­80 13-1 Opening the transceiver's case . . . . . . . . . 76 13-2 UT-102 VOICE SYNTHESIZER UNIT . . . . . . . . . 77 13-3 CR-282 HIGH STABILITY CRYSTAL UNIT . . . . . 77 13-4 Optional IF filters . . . . . . . . . . . . . . . . . . . . 78 13-5 Linear amplifier connections . . . . . . . . . . . 79 13-6 External antenna tuner connections . . . . . . 80 14 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 81­83 14-1 Fuse replacement . . . . . . . . . . . . . . . . . . . 81 14-2 Resetting the CPU . . . . . . . . . . . . . . . . . . . 81 14-3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . 82 15 SPECIFICATIONS AND OPTIONS . . . . . . 84­85 15-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . 84 15-2 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 iii 1 Å PANEL DESCRIPTION 1-1 Front panel 6 7 8 9 PHONES Å TUNER ANT APF 1 2 POWER NR TRANSMIT 3 ELEC-KEY NR AF APF/ANF RF/SQL !0 !1 !2 !3 i 4 MIC 5 q POWER SWITCH [POWER] Push momentarily to turn power ON. (p. 11) · Turn the optional DC power supply ON in advance. · When the tuner cannot tune the antenna, the tuning circuit is bypassed automatically after 20 sec. Push and hold to turn power OFF. w TRANSMIT SWITCH [TRANSMIT] Toggles between transmit and receive. · The [TX] indicator lights red while transmitting and the [RX] indicator lights green when the squelch is open. u ANTENNA SELECTOR SWITCH [ANT] (p. 71) Toggles between the HF and 50 MHz antenna connectors. i NOISE REDUCTION LEVEL CONTROL [NR] (p. 40) Adjusts the noise reduction level when the noise reduction function is in use. Set for maximum readability. o AUDIO PEAK FILTER CONTROL [APF] (p. 20) Varies the peak frequency of the audio peak filter to pick out a CW signal from interference while the APF function is ON. !0 NOISE REDUCTION SWITCH [NR] (p. 40) Toggles the noise reduction function ON and OFF. Functions in SSB, CW and RTTY modes. !1 AUDIO PEAK FILTER/AUTO NOTCH SWITCH [APF/ANF] Toggles between the audio peak (p.20) and auto notch (p. 40) functions. · The audio peak filter functions in CW mode only; the auto notch functions in SSB, FM and AM modes only. · The APF or ANF indicator appear in the display depending on which function is selected. e HEADPHONE JACK [PHONES] (p. 67) Accepts headphones. · When headphones are connected, the internal speaker or connected external speaker does not function. r ELECTRONIC KEYER JACK [ELEC-KEY] (p. 67) Accepts a paddle to activate the internal electronic keyer for CW operation. · Selection between the internal electronic keyer, bug-key and straight key operation can be made in keyer set mode. · A straight key jack is separately available on the rear panel. · Key polarity (dot and dash) can be reversed in keyer set mode. · 4-channel memory keyer is available for your convenience. t MICROPHONE CONNECTOR [MIC] Accepts the supplied or optional microphone. · See p. 85 for appropriate microphones. · See p. 67 for microphone connector information. When the APF indicator appears, push this switch for 1 sec., one or more times to select 320 Hz, 160 Hz or 80 Hz bandwidths. · Use the [APF] control to vary the peak frequency. y ANTENNA TUNER SWITCH [TUNER] (p. 59) Turns the antenna tuner ON and OFF (bypass) when pushed momentarily. Starts to tune the antenna manually when pushed for 2 sec. 2 !2 AF CONTROL [AF] (inner control; p. 12) Varies the audio output level from the speaker. PANEL DESCRIPTION 1 !3 RF GAIN/SQUELCH CONTROL [RF/SQL] (p. 12) 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 also available for other modes. · The control can be set as the RF gain control only (squelch is fixed open) or squelch control (RF gain is fixed at maximum) in set mode. · Setting RF gain Maximum RF gain Adjustable range Minimum RF gain sensitivity Maximum RF gain sensitivity · Setting squelch Noise squelch operating range Squelch threshold S-meter squelch threshold S-meter squelch operating range Squelch open !4 !5 !6 !7 !8 !9 @0 @1 i MIC GAIN RF PWR CW PITCH KEY SPEED P.AMP/ATT NB VOX/BK-IN MONITOR !4 MIC GAIN CONTROL [MIC GAIN] Adjusts the microphone input gain. !5 RF POWER CONTROL [RF PWR] (p. 84) Continuously varies the RF output power from minimum (2 W*) to maximum (100 W*). *AM mode: 2­40 W, other modes: 5­100 W. turn the VOX function ON; push for 1 sec. to turn the VOX function OFF. (p. 43) In CW mode, push momentarily to select semi break-in, full break-in or break-in OFF; push for 2 sec. to enter break-in set mode. (p. 44) @1 MONITOR SWITCH [MONI] (p. 45) Push to toggle the monitor function ON and OFF. Push for 2 sec. to enter and exit monitor set mode. !6 CW PITCH CONTROL [CW PITCH] (p. 20) Shifts the received CW audio pitch and monitored CW audio pitch without changing the operating frequency. · The pitch can be changed from 300 to 900 Hz in approx. 3 Hz steps. !7 ELECTRONIC CW KEYER SPEED CONTROL [KEY SPEED] (p. 22) Adjusts the internal electronic CW keyer's speed. · 6 wpm to 60 wpm can be set. !8 PREAMP/ATTENUATOR SWITCH [P.AMP/ATT] (p. 38) Push momentarily to toggle between preamp-1 and preamp-2. Push for 1 sec. to toggle the attenuator function ON and OFF. !9 NOISE BLANKER SWITCH [NB] (p. 39) Toggles the noise blanker ON and OFF. The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function cannot be used for FM, or non pulse-type noise. @0 VOX/BREAK-IN SWITCH [VOX/BK-IN] In SSB, AM and FM modes, push momentarily to 3 1 PANEL DESCRIPTION Ç Î Î 1.8 1 10 4 7 3.5 2 14 24 50 5 8 0 7 18 28 3 F-INP 6 9 SPLIT A/B TS @7 @8 @9 #0 @6 21 GENE · ´ Ç HF/VHF TRANSCEIVER 144ENT @6 KEYPAD (p. 14) Push a key to select an operating band. · [GENE] selects the general coverage band. Push the same key 2 or 3 times to call up stacked frequencies in the band. · Icom's band stacking register memorizes 3 frequencies (and modes) in each band. @7 FREQUENCY INPUT SWITCH [F-INP] (p. 17) Toggles keypad input between frequency and band. F1 F2 F3 F4 F5 MENU SSB CW/RTTY AM/FM FILTER · The LED lights green to indicate the switch is set for frequency input. @2 @3 @4 @5 @8 SPLIT SWITCH [SPLIT] (p. 47) Push to toggle the split function ON and OFF. · The LED lights green to indicate split operation (between VFO A and VFO B is selected). @2 MULTI-FUNCTION SWITCHES (p. 8) Push to select the functions indicated in the function display above these switches. Push to input a character for memory keyer programming or memory name. @3 MENU SWITCH [MENU] (p. 8) Push to change the set of functions assigned to the multi-function switches. · Toggles between menu set 1 and menu set 2. @9 A/B SWITCH [A/B] (p. 13) Push to toggle between VFO A and VFO B. Push for 1 sec. to equalize the contents of VFO A and VFO B. #0 QUICK TUNING STEP SWITCH [TS] (p. 15) Turns the quick tuning step ON and OFF. · While the quick tuning indicator is displayed, the frequency can be changed in programmed kHz steps. · 1, 5, 9 and 10 kHz quick tuning steps are available. @4 MODE SWITCHES (p. 17) Select an operating mode. · Push [SSB] to toggle between LSB and USB. · Push [CW/RTTY] to toggle between CW and RTTY. · Push [CW/RTTY] for 1 sec. to toggle between CW and CW-R or RTTY and RTTY-R. While the quick tuning step is OFF, turns the 1 Hz step ON and OFF when pushed for 2 sec. · 1 Hz indications appear in both readouts and the frequency can be changed in 1 Hz steps. While the quick tuning step is ON, enters the quick tuning step mode when pushed for 2 sec. @5 FILTER SWITCH (pgs. 42, 78) Push momentarily to toggle between normal and narrow IF filters for the selected operating mode. Push for 1 sec. to enter normal or narrow IF filter set mode. 4 PANEL DESCRIPTION 1 ´ #1 #2 #3 MP-W TX #4 #5 #6 MP-R RX #7 $0 $1 $2 XFC LOCK RIT TX CLEAR RIT/ TX $3 #8 SPEECH LOCK $4 #9 #1 TUNING DIAL Changes the displayed frequency, selects set mode items, etc. #2 TRANSMIT FREQUENCY CHECK SWITCH [XFC] (pgs. 34, 38, 45, 47) Monitors the transmit frequency when pushed and held when the split frequency function is ON. · While pushing this switch, the transmit frequency can be changed with the tuning dial, keypad or the memo pad. · When the split lock function is turned ON, pushing [XFC] cancels the dial lock function. #9 LOCK SWITCH [LOCK] (p. 40) Turns the dial lock function ON and OFF. $0 RIT SWITCH [RIT] (p. 38) Turns the RIT function ON and OFF when pushed. · Use the [RIT/:TX] control to vary the RIT frequency. Adds the RIT shift frequency to the operating frequency when pushed for 2 sec. $1 :TX SWITCH [:TX] (p. 45) Turns the :TX function ON and OFF when pushed. · Use the [RIT/:TX] control to vary the quency. :TX #3 MEMO PAD WRITE SWITCH [MP-W] (p. 54) Programs the selected readout frequency and operating mode into a memo pad. · The 5 most recent entries remain in memo pads. · The transmit frequency is programmed when pushed together with [XFC]. · The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience. fre- Adds the :TX shift frequency to the operating frequency when pushed for 2 sec. $2 CLEAR SWITCH [CLEAR] (pgs. 38, 45) Clears the RIT/:TX shift frequency when pushed for 2 sec. $3 RIT/:TX CONTROL [RIT/:TX] (pgs. 38, 45) Shifts the receive and/or transmit frequency without changing the transmit and/or receive frequency while the RIT and/or :TX functions are ON. · Rotate the control clockwise to increase the frequency, or rotate the control counterclockwise to decrease the frequency. · The shift frequency range is ±9.999 kHz in 1 Hz steps (or ±9.99 kHz in 10 Hz steps). #4 TRANSMIT INDICATOR [TX] Lights red while transmitting. #5 MEMO PAD READ SWITCH [MP-R] (p. 54) Each push calls up a frequency and operating mode in a memo pad. The (or 10) most recently programmed frequencies and operating modes can be recalled, starting from the most recent. · The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience. #6 RECEIVE INDICATOR [RX] Lights green while receiving a signal or when the squelch is open. #7 LOCK INDICATOR [LOCK] (p. 40) Lights when the dial lock function is activated. #8 SPEECH SWITCH [SPEECH] (p. 77) Announces the selected readout frequency when an optional UT-102 is installed. $4 BRAKE ADJUSTMENT SCREW (p. 65) Adjusts the tension of the tuning dial. · Rotate clockwise to increase the tension; counterclockwise to decrease the tension. 5 1 PANEL DESCRIPTION Ï Ï $5 TWIN PBT M VFO $6 $8 V/M MW CALL M-CL M-CH $7 $9 %0 $5 PASSBAND TUNING CONTROLS [TWIN PBT] (p. 41) Adjust the receiver's "passband width" of the 455 kHz and 9 kHz IF filters for the inner and outer controls, respectively. · Passband width and center frequency are displayed in the function display. · Set to the center positions when not in use. · Variable range depends on the filter selection. ±1.29 kHz in 15 Hz steps and ±258 Hz in 3 Hz steps are available. $8 MEMORY WRITE SWITCH [MW] (p. 51) Stores the selected readout frequency and operating mode into the displayed memory channel when pushed for 2 sec. · This function is available in both VFO and memory modes. $9 MEMORY CLEAR SWITCH [M-CL] (p. 50) Clears the selected readout memory channel contents when pushed for 2 sec. in memory mode. · This switch does not function in VFO mode. $6 VFO/MEMORY SWITCH [V/M] Toggles the selected readout operating mode between VFO mode and memory mode when pushed. Transfers the memory contents to VFO when pushed for 2 sec. $7 CALL CHANNEL SWITCH [CALL] (p. 51) Brings up the call channel. · When the call channel is displayed, push this switch to exit call channel mode. %0 MEMORY CHANNEL CONTROL [M-CH] (p.49) Selects a memory channel. · Rotate clockwise to increase the memory channel; rotate counterclockwise to decrease the memory channel. [ANT144MHz] [ANT2] [ANT1] 1-2 Rear panel q CALIBRATION POT [CAL] This is used for frequency calibration (p. 65). [REMOTE] · The transceiver has been adjusted and calibrated thoroughly at the factory. Under normal circumstances, the frequency does not need to be recalibrated. [KEY JACK] q [ACC1/2] [SEND] [SP] w [ALC] w COMPRESSION LEVEL CONTROL [COMP GAIN] (p. 46) Adjusts the speech compression level in SSB. NOTE: Refer to "12-2 Rear panel" (p. 68) for details concerning other rear panel connectors, etc. 6 PANEL DESCRIPTION 1 1-3 Function display 1 EXT TUNE 2 3 4 1 ANT 2 LSBUSBCW RTTY RAM WFM NAR 1 4 5 6 7 S Po ALC SWR 8 RIT TX 9 !0 1 3 20 5 7 9 50 20 40 60 100% RIT TX CALL BLANK VFOA VFOB MEMO SEL CALL BLANK VFOA VFOB MEMO SEL 1 1.5 2 3 CH VOX F BK IN COMP MONI P. AMPATT AGC OFF 12 F S NB SPLIT DUP XFC TSQL CH !1 !2 VOX F BK IN COMP MONI P. AMPATT AGC OFF 12 F S NB SPLIT DUP XFC TSQL NR APF ANF W M N NR APF ANF W M N !7 M1 AGC DUP CMP TCN SCP !3 !4 !5 !6 q ANTENNA TUNER INDICATORS (pgs. 59, 79) "TUNE" appears when the antenna tuner is ON; "TUNE" appears and flashes during manual tuning. "EXT" appears when the optional AH-4 external HF antenna tuner is connected to [ANT1]. w ANTENNA INDICATORS (p. 71) Indicate which antenna connector is in use for HF/50 MHz. e MODE INDICATORS (p. 7) Indicate the selected operating mode. r NARROW FILTER INDICATOR (p. 42) Appears when the narrow IF filter is selected. t 1/4 TUNING DIAL SPEED INDICATOR (p. 39) Appears when the tuning dial is set so that one revolution is equal to 1/4 of the normal revolution. y FREQUENCY READOUT Shows the operating frequency. u MULTI-FUNCTION METER INDICATION Displays S-meter reading during receive; "P0," "ALC" and "SWR" meters can be selected for transmit. i RIT/:TX INDICATORS (pgs. 38, 45) Appear during RIT or :TX operation and indicate the frequency offset. o VFO/CALL/MEMORY INDICATORS Indicate whether VFO A, VFO B, the call channel or memory mode is selected. !0 BLANK MEMORY INDICATOR (p. 49) Appears when the selected memory channel is blank. !1 SELECT MEMORY INDICATOR (p. 57) Appears when the selected memory channel is a "select" memory channel. !2 MEMORY CHANNEL INDICATOR (p. 49) Shows the selected memory channel. !3 TRANSMIT FUNCTION INDICATORS Indicate functions selected for transmit. !4 RECEIVE FUNCTION INDICATORS Indicate functions selected for receive. !5 SPLIT FUNCTION INDICATOR Appears during split operation. !6 DSP FUNCTION INDICATORS Appear when DSP functions are selected. !7 MULTI-FUNCTION SWITCH INDICATORS (p. 8) Indicate the functions assigned to the multi-function switches (F1­F5). 7 2 MENU SELECTION Depending on the mode and menu item selected, the action of the multi-function keys ([F1] to [F5]) changes. Pushing [MENU] toggles between menu set 1 (M1) and menu set 2 (M2) in the function display. 2-1 Menu set 1 flow chart SSB MODE 1 ANT USB RTTY MODE M1 AGC DUP 1/4 RTY SCP F1 F2 F3 F4 F5 60 S Po ALC SWR 1 3 20 5 7 9 50 20 40 BLANK 100% VFOA CH To band scope menu 1 1.5 2 3 RTTY MENU (p. 29) P. AMP 1 AGC S RTY RTTY Mark 2125 F1 F2 M1 AGC DUP CMP TCN SCP F1 F2 F3 F4 F5 To band scope menu TONE CONTROL MENU (p. 19) AM MODE TCN SSB TX Tone L H 0 M1 AGC DUP CMP SCP F1 F2 F3 F5 To band scope menu CW MODE BAND SCOPE MENU (p. 37) M1 AGC DUP 1/4 KEY SCP F1 F2 F3 F4 F5 SCP F1 STEP 0.5k F5 MEMORY KEYER MENU (p. 23) F3 EDIT MENU (p. 25) KEY SND EDT 001 SET F2 F3 F4 F5 EDT CQ TEST CQ TEST DEL SPC M1 F1 F2 F3 F4 F5 To band scope menu SEND MENU (p. 24) F4 CONTEST NUMBER MENU (p. 26) 001 SND M1 M2 M3 M4 -1 F1 F2 F3 F4 F5 001 Number Style Normal F1 F2 FM MODE KEYER SET MODE F5 (p. 27) M1 AGC DUP TON TSQ SCP F1 F2 F3 F4 F5 SET Side Tone Level 50% F1 F2 To band scope menu 8 MENU SELECTION 2 2-2 Menu set 2 flow chart 1 ANT USB S Po ALC SWR 1 3 20 5 7 9 50 20 40 60 100% BLANK VFOA CH 1 1.5 2 3 P. AMP 1 AGC S SET MODE F5 (p. 60) M2 SCN MEM LCD SET F1 F2 F3 F5 SET Beep Level 50% F1 F2 SCAN MENU (pgs. 56­58) LCD MENU F3 (p. 66) VFO MODE F +10k SCN PRO F FIN SPN SET F1 F2 F3 F4 F5 LCD LCD Contrast 50% F1 F2 MEMORY MODE MEMORY NAME MENU F2 (p. 53) F +10k SCN MEM F SEL SPN SET F-1 F-2 F-3 F-4 F-5 14.1000 USB MEM EDT ( ) SEL F1 F5 F5 SCAN SET MENU (p. 55) NAME EDIT MENU (p. 53) SET SCAN Speed HIGH F1 F2 EDT ABC F1 F2 F3 DEL SPC F4 F5 MENU M1 M2 q AGC w DUP e CMP r TCN t SCP y 1/4 u KEY MODE SSB CW RTTY AM FM ALL F1 q AGC AGC AGC AGC AGC !1 SCN F2 w DUP DUP DUP DUP DUP !2 MEM F3 e CMP y 1/4 1/4 CMP o TON !3 LCD F4 r TCN u KEY i RTY !0 TSQ i RTY o TON !0 TSQ !1 SCN !2 MEM !3 LCD !4 SET F5 t SCP SCP SCP SCP SCP !4 SET : p. 30 : p. 35 : p. 33 : p. 55 : p. 53 : p. 66 : p. 60 (auto gain control) (duplex) (speech compressor) (tone control) (band scope) (dial rate) (CW key) : p. 39 : p. 35 : p. 46 : p. 20 : p. 37 : p. 39 : p. 24 (RTTY) (repeater tone) (tone squelch) (scan) (memory names) (function display) (set mode) 9 3 BASIC OPERATION Before applying power for the first time, check the following points: Is the connected external power supply capable of delivering more than 20 A? Are the antenna(s) connected properly? · [ANT1/2]: HF/50 MHz antenna · [144MHz]: 144 MHz antenna Is the transceiver properly grounded? (p. 70) Is external equipment, such as a linear amplifier connected properly? (p. 79) Make sure the front panel switches and controls are set as illustrated below. 3-1 Before operating Å BEFORE APPLYING POWER 1 2 HF/VHF TRANSCEIVER TUNER POWER NR TRANSMIT APF 10 21 GENE TWIN PBT 1.8 1 4 7 3.5 2 14 24 50 5 8 0 7 18 28 3 F-INP 6 9 SPLIT A/B TS RX ANT 3 M VFO V/M 144ENT MP-R MW CALL M-CL M-CH PHONES NR APF/ANF RF/SQL MP-W TX 5 4 XFC LOCK ELEC-KEY AF RIT MIC F1 F2 F3 F4 F5 TX CLEAR RIT/ TX MENU SSB CW/RTTY AM/FM FILTER MIC GAIN RF PWR CW PITCH KEY SPEED P.AMP/ATT NB VOX/BK-IN MONITOR SPEECH LOCK 6