Icom IC-756 - Manuals - manualsarea.com

Page 2 - WORD

R WARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during trans-mission. This may result in an electrical shock or burn. R NEVER apply AC to the [DC13.8V] socket on the transceiver rear panel. This could cause a fire or ruinthe transceiver. R NEVER apply more than 16 V DC,...

Page 4 - PANEL DESCRIPTION; Front panel; • Push momentarily to toggle the timer function ON; How to set the microphone gain.

1 1 PANEL DESCRIPTION ■ Front panel TIMER POWER TRANSMIT PHONES ELEC-KEY MIC TUNER MONITOR NB NR AF BAL NR RF/SQL MIC GAIN RF POWER COMP KEY SPEED BK-IN DELAY S Po 0 10 1 1 1.5 2 3 5 9 +20 +40 +60dB 25 50 100 ％ ∞ SWR ALC F-1 SSB F-2 F-3 F-4 F-5 CW RTTY AM FM HF/50MHz TRANSCEIVER i756 1ß VFO VFO 1...

Page 5 - • When setting as RF gain/squelch control; when pushed momentarily.; • When setting as RF gain control

2 1 PANEL DESCRIPTION i 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 par ticularly effective for FM. It is also available for oth...

Page 6 - What is the attenuator?; What is the VOX function?

NB NR BAL NR COMP KEY SPEED BK-IN DELAY APF APF LOCK TX RX AUTO NOTCH TWIN PBT CW PITCH F-1 SSB F-2 F-3 F-4 F-5 SPEECH LOCK RIT/ TX TX RIT CLEAR CW RTTY AM FM SPLIT MP-W MP-R DUAL WATCH VFO/ MEMO MAIN/ SUB CHANGE 1.8 1 3.5 2 7 3 10 4 14 5 18 6 21 7 24.5 8 28 9 GENE ・ 50 0 F-INP ENT ▲ ▼ MW M-CL TS...

Page 7 - What is the speech compressor?

• Tur ns the speech compressor ON and OFF in SSB and AM modes. (p. 34) • Enters memor y keyer set mode in CW mode. (pgs. 35, 36) • Tur ns the 1 ⁄ 4 function ON and OFF in RTTY mode. (p. 24) - 1 ⁄ 4 function sets dial rotation to 1 ⁄ 4 of normal for fine tuning. ✔ What is the speech compressor? The s...

Page 8 - What is the RIT function?; What is the; CW PITCH CONTROL [CW PITCH

5 1 PANEL DESCRIPTION #0 LOCK SWITCH [LOCK] (p. 38)Turns the dial lock function ON and OFF. #1 RIT/ ∂ ∂ TX CONTROL [RIT/ ∂ ∂ TX ] (p. 29) Shifts the receive and/or transmit frequency withoutchanging the transmit and/or receive frequencywhile the RIT and/or ∂ TX functions are ON. - Rotate the control...

Page 9 - AUDIO PEAK FILTER CONTROL [APF; • Tur ns the audio peak filter ON and OFF when; AUTO NOTCH SWITCH [AUTO NOTCH; Turns the auto notch function ON and OFF.; PASSBAND TUNING CONTROLS [TWIN PBT; What is the PBT control?; • Pushing the same key 2 or 3 times calls up other

6 1 PANEL DESCRIPTION #6 AUDIO PEAK FILTER CONTROL [APF ] (inner control; p. 27)Varies the peak frequency of the audio peak filter topick out a CW signal from interference while theAPF function is ON. #7 AUDIO PEAK FILTER SWITCH [APF ] (p. 27) • Tur ns the audio peak filter ON and OFF when pushed. -...

Page 11 - • MICROPHONE CONNECTOR; DO NOT short pin 2 to ground as this; Microphone; • HM-36 SCHEMATIC DIAGRAM

• MICROPHONE CONNECTOR (Front panel view) CAUTION: DO NOT short pin 2 to ground as this can damage the internal 8 V regulator. y GND (PTT ground) t PTT r Main readout squelch switch q Microphone input w +8 V DC output e Frequency up/down u GND (Microphone ground) i Main readout AF output (varies wit...

Page 12 - LCD display; • Show the VFO contents in memory mode.

9 1 PANEL DESCRIPTION 1ß VFO 14.195.000 VFO USB USB USB 14.100.00 14.205.000 14.205.000 USB USB USB 14.100.00 56 56 ß MARKER MARKER HOLD HOLD MAX-H MAX-H EXIT EXIT ANT 1 METER Po P.AMP OFF ATTOFF AGCMID VOXOFF COMP OFF SPAN SPAN T X 2.4k 2.4k 9 2.8k 2.8k 455 455 12:34 12:34 G r i d2 . 5 k1 0 d ...

Page 13 - •Start up screen; Screen menu arrangement; EXIT] one or more times returns to the

10 1 PANEL DESCRIPTION 80% 95% F-1 F-1 F-2 F-3 F-4 F-5 [ 1 5 k ] [ ] [ N O N E ] [ F I L T E R S E L E C T I O N ] [ F I L T E R S E L E C T I O N ] 9MHz 9MHz 455kHz 455kHz DEF DEF EXIT EXIT AGC AGCMID MID VOX VOXOFF OFF COMP COMP OFF OFF S S B 2 . 4 K [ 1 5 k ] [ ...

Page 14 - general coverage antenna with an; mote control of transceiver functions.; Rear panel; t y u

q RECEIVE ANTENNA CONNECTOR [RX ANT] (p. 15)Connects a 50 Ω general coverage antenna with an RCA connector. w TUNER CONTROL SOCKET [TUNER] (p. 15)Accepts the control cable from an optional AH-3 HF AUTOMATIC ANTENNA TUNER . e ACCESSORY SOCKET 1 [ACC(1)] r ACCESSORY SOCKET 2 [ACC(2)]Enable connection ...

Page 15 - ACC SOCKETS; DESCRIPTION

12 1 PANEL DESCRIPTION !1 ANTENNA CONNECTOR 1 [ANT1] !2 ANTENNA CONNECTOR 2 [ANT2] (pgs. 13, 14)Accept a 50 Ω antenna with a PL-259 connector. NOTE: When using an optional AH-3 HF AUTOMATIC ANTENNA TUNER , connect it to the [ANT1] connector. The internal antenna tuner activates for [ANT2] anddeactiv...

Page 16 - OPERATING ANGLE ADJUSTMENT; Antenna; Protect your transceiver from lightning by; INSTALLATION AND CONNECTIONS; PL-259 CONNECTOR INSTALLATION; Antenna SWR

■ Unpacking After unpacking, immediately report any damage to thedelivering carrier or dealer. Keep the shipping cartons. For a description and a diagram of accessory equip-ment included with the IC-756, see UNPACKING onp. ii of this manual. ■ Selecting a location Select a location for the transceiv...

Page 17 - Required connections; • Front panel

TIMER POWER TRANSMIT PHONES ELEC-KEY MIC TUNER MONITOR NB NR MIC GAIN RF POWER COMP KEY SPEED BK-IN DELAY AF RF/SQL BAL NR APF LOCK TX RX AUTO NOTCH TWIN PBT APF CW PITCH S Po 0 10 1 1 1.5 2 3 5 9 +20 +40 +60dB 25 50 100 ％ ∞ SWR ALC F-1 SSB F-2 F-3 F-4 F-5 SPEECH LOCK RIT/ TX TX RIT CLEAR CW RTTY ...

Page 18 - Advanced connections; • Rear panel

15 2 INSTALLATION AND CONNECTIONS ■ Advanced connections • Front panel TIMER POWER TRANSMIT PHONES ELEC-KEY MIC TUNER MONITOR NB NR MIC GAIN RF POWER COMP KEY SPEED BK-IN DELAY AF RF/SQL BAL NR APF LOCK TX RX AUTO NOTCH TWIN PBT APF CW PITCH S Po 0 10 1 1 1.5 2 3 5 9 +20 +40 +60dB 25 50 100 ％ ∞ SW...

Page 19 - Power supply connections; Use an optional PS-85; CONNECTING AN ICOM DC POWER SUPPLY; CONNECTING A VEHICLE BATTERY; Before connecting the DC power cable,; NEVER connect

16 2 INSTALLATION AND CONNECTIONS ■ Power supply connections Use an optional PS-85 DC POWER SUPPLY , etc. when operating the transceiver with AC power. Refer to thediagrams below. CONNECTING AN ICOM DC POWER SUPPLY to DC power socket PS-85 AC outlet AC cable Transceiver CONNECTING A NON-ICOM DC POWE...

Page 20 - Linear amplifier connections; CONNECTING THE IC-4KL

17 2 INSTALLATION AND CONNECTIONS ■ Linear amplifier connections Transceiver Ground IC-4KL Remote controller Coaxial cable (supplied with the IC-4KL) ACC cable (supplied with the IC-4KL) ACC IC-4KL Remote control cable (supplied with the IC-4KL) AC outlet (220–240 V) To anantenna ANT1 ACC(2) Use the...

Page 21 - External antenna selector or antenna tuner connections; CONNECTING THE EX-627

18 2 INSTALLATION AND CONNECTIONS ■ External antenna selector or antenna tuner connections CONNECTING THE EX-627 Ground Coaxial cable (supplied with the EX-627) ACC cable (supplied with the EX-627) EX-627 ANT1 ACC(2) CONNECTING THE AH-3 Coaxial cable (from the AH-3) Long wire or optional AH-2b Groun...

Page 22 - AFSK and SSTV connections

To connect a terminal unit, TNC or scan conver ter,refer to the diagram below. For RTTY operationThe optional 250 Hz CW narrow filters may not passRTTY signals. Be sure to select the appropriate IFfilters corresponding to the signal width. (p. 28) AF input Ground (GND) PTT SQUELCH input* RTTY keying...

Page 23 - • CI-V connection example; to a personal computer; • Data format

Description Command Frequency setting 05 Operating mode LSBUSBAMCWRTTYFM 06 VFO mode selectionMAIN ↔ SUB MAIN = SUBDualwatch OFFDualwatch ONMain readout selectionSub readout selection 07 Memory mode selectionMemory channel selection 08 Memory writeMemory transfer to VFOMemory clear 09 0A0B Scan stop...

Page 24 - FREQUENCY SETTING; When first applying power; Initial settings

21 3 FREQUENCY SETTING ■ When first applying power (CPU resetting) Before first applying power, make sure all connectionsrequired for your system are complete by referring tochapter 2. Then, reset the transceiver using the follow-ing procedure. NOTE: Resetting CLEARS all programmed con-tents in memo...

Page 25 - • Differences between VFO mode and memory mode; VFO description

• Differences between VFO mode and memory mode 22 3 FREQUENCY SETTING ■ VFO description VFO is an abbreviation of Variable Frequency Oscilla-tor, and traditionally refers to an oscillator. The transceiver’s VFO is somewhat different. The VFOof the IC-756 acts like a computer’s window and canshow one...

Page 26 - Frequency setting with the tuning dial; • For ham band use; • For general coverage receiver use; Rotate the tuning dial to set the desired frequency.

23 3 FREQUENCY SETTING ■ Frequency setting with the tuning dial ■ Direct frequency entry with the keypad • For ham band use q Push the desired band key on the keypad 1–3times. - 3 different frequencies can be selected on each band with the band key. (See “Triple band stacking register”below.) w Rota...

Page 27 - Advanced tuning functions; SELECTING THE kHz STEP

AUTO TUNING STEP FUNCTION (AM/FM only)When selecting AM or FM, the quick tuning step is au-tomatically selected by the auto tuning step function. 24 3 FREQUENCY SETTING ■ Advanced tuning functions QUICK TUNING STEPThe operating frequency can be changed in kHzsteps (1, 5, 9 or 10 kHz selectable) for ...

Page 28 - Twin PBT operation; RECEIVE AND TRANSMIT; Mode selection; PBT OPERATION EXAMPLE

■ Twin PBT operation The twin PBT (Passband Tuning) function electronicallynarrows the receiver’s IF passband widths to reduceinterference. Moving both [TWIN PBT] controls to thesame position shifts the IF. - The LCD shows the passband width graphically. Variable range depends on the filter selectio...

Page 29 - Auto notch function; The auto notch functions in SSB mode only.; Noise reduction; Noise blanker; • Push the [NB] switch to turn the noise blanker ON or

26 4 RECEIVE AND TRANSMIT ■ Auto notch function The auto notch function automatically attenuatesmore than 3 beat tones, tuning signals, etc., even ifthey are moving. The auto notch functions in SSB mode only. q Select SSB mode. w Push [AUTO NOTCH] to turn the auto notch func-tion ON. e Push [AUTO NO...

Page 30 - APF function; CW reverse mode; • Receive audio tone response; CW pitch control

The received CW audio pitch and monitored CWaudio can be adjusted to suit your preferences (300to 900 Hz) without changing the operating frequency. The received CW audio pitch can be adjusted in 3 Hzsteps. ■ APF function The APF (Audio Peak Filter) changes the receive fre-quency response by boosting...

Page 31 - Filter selection

The filter selection switches the IF passband width asshown in the table at right. The filter selection is automatically memorized in eachmode. When an optional filter is installed, set the optional fil-ter setting in set mode. (p. 55) Optional filters are notselected by default. q If the start up s...

Page 32 - PRACTICAL EXAMPLE; • RIT function; • Calculate function

When you find a DX station on 21.025 MHz/CW and thestation is picking up stations transmitting slightly up from21.025 MHz. q Push [RIT] and [ ∂ TX] to turn both the RIT and ∂ TX functions ON. w Rotate [RIT/ ∂ TX] to find the DX station’s receive fre- quency. e When you find the DX station’s receive ...

Page 33 - • Scanning during dualwatch; Dualwatch operation

30 4 RECEIVE AND TRANSMIT Dualwatch monitors 2 frequencies with the samemode simultaneously. During dualwatch, both frequencies should be on thesame band because the bandpass filter in the RF cir-cuit is selected for the main readout frequency. q Set a desired frequency. w Push [DUALWATCH] for 2 sec...

Page 34 - Split frequency operation

31 4 RECEIVE AND TRANSMIT Split frequency operation allows you to transmit andreceive in the same mode on two different frequen-cies. The split frequency operation is basically per-for med using 2 frequencies on the main and subreadouts. Following is an example of setting 21.290 MHz for re-ceiving a...

Page 35 - Quick split function; OPERATION 1

32 4 RECEIVE AND TRANSMIT When you find a DX station, an important considera-tion is how to set the split frequency. When you push the [SPLIT] switch for 2 sec., split fre-quency operation is turned ON, the sub readout isequalized to the main readout frequency and entersstandby for transmit frequenc...

Page 36 - LEVEL] to enter level set; Monitor function; • Using the VOX function; VOX function

33 4 RECEIVE AND TRANSMIT The monitor function allows you to monitor your trans-mit IF signals in any mode through the speaker. Usethis to check voice characteristics while adjustingtransmit tones. (p. 54) The CW sidetone functions re-gardless of the [MONITOR] switch setting. q Push [MONITOR]. - The...

Page 37 - Meter function; Speech compressor

34 4 RECEIVE AND TRANSMIT The transceiver has 3 transmit meter functions foryour convenience. Select the desired meter with the[METER] switch. • Push [METER] to select RF power (Po), SWR or ALC for transmit metering. ■ Meter function The RF speech compressor increases average RFoutput power, improvi...

Page 38 - • Setting the electronic keyer; Rotate the tuning dial to select the keying weight.; Electronic CW keyer; KEYING WEIGHT EXAMPLE: morse code “K”

35 4 RECEIVE AND TRANSMIT The transceiver has an electronic keyer. Keying speedcan be adjusted with [KEY SPEED]. Keying weight,the ratio of dot : space : dash, can be set from 1 : 1 : 2.8to 1 : 1 : 4.5 in keyer set mode. • Setting the electronic keyer q Push [CW] to select CW mode. w Push [KEYER] to...

Page 39 - • Programming the memory keyer; • Transmitting memory keyer contents; • Clearing contact numbers; Memory keyer

36 4 RECEIVE AND TRANSMIT The memory keyer memorizes and can re-transmit 4CW key codes for often-used CW sentences, antennatypes, etc. Total capacity of the memory keyer is 55characters in each memory channel. • Programming the memory keyer q Push [CW] to select CW mode. w Push [KEYER] to select key...

Page 40 - HOLD] to freeze the current spectrum; Spectrum scope screen; • Antenna switch selection example; for more than 3 antennas (except for receive; Band memory

37 4 RECEIVE AND TRANSMIT This function allows you to display the relativestrengths of signals around the center frequency. Thespan can be set to ± 12.5 kHz, ± 25 kHz, ± 50 kHz and± 100 kHz. Ideal for monitoring band conditions in aninstant. q If the start up screen is not selected (if [F-5]’s func-...

Page 41 - Repeater operation; • Push [LOCK] to toggle the dial lock function ON and; Dial lock function

38 4 RECEIVE AND TRANSMIT A repeater amplifies received signals and retransmitsthem at a different frequency. When using a repeater,the transmit frequency is shifted from the receive fre-quency by an offset frequency. A repeater can be ac-cessed using split frequency operation with the shiftfrequenc...

Page 42 - Antenna tuner operation

■ Antenna tuner operation The inter nal automatic antenna tuner matches thetransceiver to the connected antenna automatically.Once the tuner matches an antenna, the variable ca-pacitor angles are memor ized as a preset point foreach frequency range (100 kHz steps). Therefore,when you change the freq...

Page 43 - • AH-3 HF AUTOMATIC ANTENNA TUNER; NEVER operate the AH-3 when it is ungrounded.; long wire or multiple of the operating frequency.; Optional external tuner operation

• AH-3 HF AUTOMATIC ANTENNA TUNER The AH-3 matches the IC-756 to a long wire antennamore than 3 m/10 ft long (3.5 MHz and above) ormore than 12 m/40 ft long (1.8 MHz and above). • See p. 18 for the transceiver and AH-3 connection.• See the AH-3 instruction manual for AH-3 installation and antenna co...

Page 44 - MEMORY OPERATION; Memory channels; • Using the keypad; Memory channel selection

41 5 MEMORY OPERATION ■ Memory channels The transceiver has 101 memory channels. The mem-ory mode is very useful for quickly changing to often-used frequencies. All 101 memory channels are tunable which means theprogrammed frequency can be tuned temporarily withthe tuning dial, etc. in memory mode. ...

Page 45 - Memory channel screen

42 5 MEMORY OPERATION ■ Memory channel screen The memory channel screen simultaneously shows 9memory channels and their programmed contents. You can select a desired memor y channel from thememory channel screen. • Selecting a memory channel using the memory channel screen q If the start up screen i...

Page 46 - Memory channel programming; • Programming in VFO mode; ] several times to select the desired; • Programming in memory mode; Select the desired memory channel with [

43 5 MEMORY OPERATION ■ Memory channel programming Memory channel programming can be preformed ei-ther in VFO mode or in memory mode. • Programming in VFO mode q Set the desired frequency and operating mode inVFO mode. w Push [ Y ]/[ Z ] several times to select the desired memory channel. - Memory c...

Page 47 - • Transferring in VFO mode; Frequency transferring; • Transferring in memory mode

44 5 MEMORY OPERATION • Transferring in VFO mode This is useful for transferring programmed contents toVFO. q Select VFO mode with [VFO/MEMO]. w Select the memory channel to be transferred with[ Y ]/[ Z ]. - Memory channel screen is convenient for selecting the desired channel. - Memor y channel con...

Page 48 - Memory names; Memory clearing

45 5 MEMORY OPERATION All memory channels (including scan edges) can betagged with alphanumeric names of up to 10 charac-ters each. Letters (capitals), numerals, some symbols ( ⁄ , ?, M ) and spaces can be used. • Editing (programming) memory names q If the start up screen is not selected (if [F-5]’...

Page 49 - • Writing frequencies and operating; Memo pads; • Calling up a frequency from a memo; MEMO PADS

46 5 MEMORY OPERATION • Writing frequencies and operating modes into memo pads You can simply write the accessed readout frequencyand operating mode by pushing [MP-W]. When you write a 6th frequency and operating mode,the oldest written frequency and operating mode areautomatically erased to make ro...

Page 50 - SCANS; Scan types; • Channels; For; • Scan speed

47 6 SCANS ■ Scan types ■ Preparation • Channels For programmed scan:Program scan edge frequencies into scan edge mem-ory channels P1 and P2. For ∂ F scan: Set the ∂ F span ( ∂ F scan range) in the scan screen. For memory scan:Program 2 or more memor y channels except scanedge memory channels. For s...

Page 51 - Programmed scan operation; F scan operation

48 6 SCANS q If the start up screen is not selected (if [F-5]’s func-tion is [EXIT]), push [F-5] one or more times to exit. w Select VFO mode. e Select the desired operating mode. - The operating mode can also be changed while scan- ning. r Push [ (F-4) SCAN] to select the scan screen. t Set [RF/SQL...

Page 52 - Fine programmed scan/fine; Select the desired operating mode.; Memory scan operation

49 6 SCANS Fine scan functions as programmed or ∂ F scan, but scan speed decreases when the squelch opens anddoes not stop. The scanning tuning step shifts from50 Hz to 10 Hz while the squelch opens. q Select the scan screen from the start up screen bypushing [ (F-4) SCAN]. w Set for programmed scan...

Page 53 - Select memory scan operation; Setting select memory channels

50 6 SCANS q If the start up screen is not selected (if [F-5]’s func-tion is [EXIT]), push [F-5] one or more times to exit. w Select memory mode. e Select the desired operating mode. - The operating mode can also be changed while scan- ning. r Push [ (F-4) SCAN] to select the scan screen. t Set [RF/...

Page 54 - CLOCK AND TIMERS; Setting the current time; TIME] to enter timer set; Setting power-on time

51 7 CLOCK AND TIMERS The transceiver has a built-in 24-hour clock withpower-off and power-on timer functions. This is usefulwhen logging QSO’s and so on. The clock indicationis always displayed except after pushing [F-INP]. q If the start up screen is not selected (if [F-5]’s func-tion is [EXIT]), ...

Page 55 - Setting power-off period; Timer operation

52 7 CLOCK AND TIMERS The transceiver can be set to turn OFF automaticallyafter being activated via the power-on timer. Thepower-off period can be set to 5–120 min. in 5 min.steps. q If the start up screen is not selected (if [F-5]’s func-tion is [EXIT]), push [F-5] one or more times to exit. w Push...

Page 56 - SET MODE; Set mode description; • Set mode operation; Set the desired condition using the tuning dial.; SET] to enter the set

53 8 SET MODE ■ Set mode description Set mode is used for programming infrequentlychanged values or conditions of functions. This trans-ceiver has a level set mode, display set mode, timerset mode and miscellaneous (others) set mode. • Set mode operation q If the start up screen is not selected (if ...

Page 57 - Level set mode; Display set mode; Monitor

Tx tone (Treble) This item adjusts the treble level of the transmit audiotone in SSB/AM mode from –12 dB to +12 dB in 2 dBsteps. 54 8 SET MODE Tx tone (Bass) This item adjusts the bass level of the transmit audiotone in SSB/AM mode from –12 dB to +12 dB in 2 dBsteps. ■ Level set mode 0 d B 0 dB ...

Page 58 - Timer set mode; Calibration marker

55 8 SET MODE Power-ON timer set This item sets the power-on time. See p. 51 for details. Time (now) This item sets the current time for the built-in 24-hourclock. See p. 51 for details. ■ Timer set mode 1 5 : 0 0 Push [ (F-4) SET] to enter the time. 1 5 : 0 0 Push [ (F-4) SET] to enter the time. Po...

Page 59 - Scan speed

56 8 SET MODE Beep (band edge) A beep sounds when an operating frequency entersor exits an amateur band. This functions independentof the confirmation beep setting (above). The volume level can be set in level set mode. (p. 54) Beep (confirmation) A beep sounds each time a switch is pushed to con-fi...

Page 60 - FM subaudible tone; • Available subaudible tones; Split lock; See p. 31 for split frequency operation details.

57 8 SET MODE FM split offset (HF) This item sets the offset (difference between transmitand receive frequencies) for the quick split function.However, this setting is used for HF bands in FMmode only and is used to input the repeater offset foran HF band. The offset frequency can be set from –4 MHz...

Page 61 - RTTY shift width

58 8 SET MODE Tuner (PTT start) Tuning of the internal antenna tuner can be star tedautomatically at the moment the PTT is pushed afterthe operating frequency is changed (more than 1%from last-tuned frequency). O N O F F Automatic PTT start ON Automatic PTT start OFF (default) [ANT] switch You can s...

Page 62 - Speech speed; Memo pad numbers; Scope during tx

59 8 SET MODE ■ Miscellaneous (others) set mode (continued) Speech speed When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select between faster or slower syn-thesizer output. See p. 61 for unit installation. H I G H L O W Faster announcement(default) Slower announcement Speech S...

Page 64 - OPTION INSTALLATIONS; Turn the transceiver upside down.; Opening the transceiver’s case

61 9 OPTION INSTALLATIONS The UT-102 announces the accessed readout’s fre-quency, mode, etc. (S-meter level can also be an-nounced—p. 59) in a clear, electronically-generatedvoice, in English (or Japanese). q Remove the top and bottom covers as shownabove. w Remove the protective paper attached to t...

Page 65 - Replace the top and bottom covers.; Optional IF filters; HIGH STABILITY CRYSTAL UNIT

62 9 OPTION INSTALLATIONS Several IF filters are available for the IC-756. You caninstall 2 filters for 9 MHz and 455 kHz IF. Choose ap-propriate filter(s) for your operating needs. 9 MHz optional filters:FL-100 CW NARROW FILTER 500 Hz/–6 dB FL-101 CW NARROW FILTER 250 Hz/–6 dB FL-223 SSB NARROW FIL...

Page 66 - MAINTENANCE; Troubleshooting

63 10 MAINTENANCE ■ Troubleshooting The following char t is designed to help you correctproblems which are not equipment malfunctions. If you are unable to locate the cause of a problem orsolve it through the use of this char t, contact yournearest Icom Dealer or Service Center. PROBLEM POSSIBLE CAU...

Page 67 - Fuse replacement; Disconnect the DC power cable from; the transceiver when changing a fuse.; DC POWER CABLE FUSE REPLACEMENT; Clock backup battery replacement

CIRCUITRY FUSE REPLACEMENTThe 13.8 V DC from the DC power cable is applied toall units in the IC-756, except for the power amplifier,through the circuitry fuse. This fuse is installed in thePA unit. q Remove the top cover as shown on p. 61. w Remove 11 screws from the PA shielding plate,then remove ...

Page 68 - Tuning dial brake adjustment; Your transceiver has been thoroughly; Frequency calibration

65 10 MAINTENANCE The tension of the tuning dial may be adjusted to suityour preference. The brake adjustment screw is located on the rightside of the tuning dial. See the figure at right. Turn the brake adjustment screw clockwise or coun-terclockwise to obtain a comfor table tension levelwhile turn...

Page 69 - INTERNAL VIEWS; • Top view

PA fuse (FGB 5 A) PA unit Clock backup battery FILTER unit Internal antenna tuner 66 11 INTERNAL VIEWS • Top view RF unit R572 Optional voicesynthesizer level adj. Space for optional 455 kHz filter PLL unit Space for optional 9 MHz filter Space for optional voice synthesizer(UT-102) MAIN unit Space ...

Page 70 - SPECIFICATIONS; General

67 12 SPECIFICATIONS ■ General • Frequency coverage: Receive 1 0.030–60.000 MHz* 1 Transmit 0 1.800– 0 1.999 MHz* 2 0 3.500– 1 3.999 MHz* 2 0 7.000– 1 7.300 MHz* 2 10.100–10.150 MHz14.000–14.350 MHz18.068–18.168 MHz21.000–21.450 MHz24.890–24.990 MHz28.000–29.700 MHz50.000–54.000 MHz* 2 * 1 Some freq...

Page 71 - OPTIONS

68 13 OPTIONS IC-4KL HF 1 kW LINEAR AMPLIFIER Full-duty 1 kW linear amplifier including an automatic antenna tuner. Has automatic tuningand band selection capability. Full break-in (QSK) operation is possible. The amplifier/powersupply unit and the remote control unit are separated. EX-627 AUTOMATIC...