Manuel d'utilisation / d'entretien du produit IC-756 du fabricant Icom
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INSTR UCTION MANU AL i756 HF/50 MHz ALL MODE TRANSCEIVER.
R W ARNING HIGH V OL T A GE! NEVER attach an antenna or internal antenna connector during trans- mission. This ma y result in an electrical shock or b urn. R NEVER apply A C to the [DC13.8V] sock et on the transceiv er rear panel. This could cause a fire or ruin the transceiv er .
UNP A CKING T ABLE OF CONTENTS ii qw e r t Accessories included with the IC-756: Qty . q DC power cab le (OPC-025A) .............................. 1 w Hand microphone (HM-36) .................................. 1 e Spare fuses (FGB 20 A) ..............
1 1 P ANEL DESCRIPTION ■ Fr ont 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 14.
2 1 P ANEL DESCRIPTION i RF GAIN CONTROL/SQ UELCH CONTROL [RF/SQL] (outer control) Adjusts the RF gain and squelch threshold le v el. The squelch remov es noise output from the speak er (closed condition) when no signal is received. - The squelch is par ticularly effectiv e for FM.
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 WA TCH VFO/ MEMO MAIN/ SUB CHANGE 1.8 1 3.5 2 7 3 10 4 14 5 18 6 21 7 24.
• T urns the speech compressor ON and OFF in SSB and AM modes. (p . 34) • Enters memor y ke yer set mode in CW mode. (pgs . 35, 36) • T urns the 1 ⁄ 4 function ON and OFF in R TTY mode. (p . 24) - 1 ⁄ 4 function sets dial rotation to 1 ⁄ 4 of normal for fi ne tuning.
5 1 P ANEL DESCRIPTION #0 LOCK SWITCH [LOCK] (p . 38) T urns the dial lock function ON and OFF . #1 RIT/ ∂ ∂ TX CONTR OL [RIT/ ∂ ∂ TX ] (p . 29) Shifts the receive and/or transmit frequency without changing the transmit and/or receiv e frequency while the RIT and/or ∂ TX functions are ON.
6 1 P ANEL DESCRIPTION #6 A UDIO PEAK FIL TER CONTROL [APF ] (inner control; p . 27) V aries the peak frequency of the audio peak fi lter to pick out a CW signal from interf erence while the APF function is ON. #7 A UDIO PEAK FIL TER SWITCH [APF ] (p .
7 1 P ANEL DESCRIPTION $7 MEMOR Y UP/DO WN SWITCHES [ Y Y ]/[ Z Z ] (p . 41) • Select the memor y channel number f or the se- lected readout. - Memory channels can be selected both in VFO and memor y modes. • Select the desired memor y channel directly after pushing [F-INP] and a memor y channel number .
• MICROPHONE CONNECT OR (F ront panel view) CA UTION: DO NO T shor t 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 Microphon.
9 1 P ANEL 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 ATT OFF AGC MID VOX OFF COMP OFF SPAN SPAN TX 2.
10 1 P ANEL DESCRIPTION 80% 95% F-1 F-1 F-2 F-3 F-4 F-5 [15k ] [ ] [NONE ] [FILTER SELECTION] [FILTER SELECTION] 9MHz 9MHz 455kHz 455kHz DEF DEF EXIT EXIT AGC AGC MID MID VOX VOX OFF OFF COMP COMP OFF OFF SSB 2.
q RECEIVE ANTENNA CONNECT OR [RX ANT] (p . 15) Connects a 50 Ω general co v er age antenna with an RCA connector . w TUNER CONTROL SOCKET [TUNER] (p .
12 1 P ANEL DESCRIPTION !1 ANTENNA CONNECT OR 1 [ANT1] !2 ANTENNA CONNECT OR 2 [ANT2] (pgs. 13, 14) Accept a 50 Ω antenna with a PL-259 connector . NO TE: When using an optional AH-3 HF A UT OMA TIC ANTENNA TUNER , connect it to the [ANT1] connector .
■ Unpac king After unpacking, immediately report any damage to the delivering carrier or dealer . Keep the shipping cartons. F or a description and a diagram of accessory equip- ment included with the IC-756, see UNP A CKING on p . ii of this manual.
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.
15 2 INST ALLA TION AND CONNECTIONS ■ Adv anced 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.
16 2 INST ALLA TION AND CONNECTIONS ■ P ower suppl y connections Use an optional PS-85 DC POWER SUPPL Y , etc. when operating the transceiv er with A C power .
17 2 INST ALLA TION AND CONNECTIONS ■ Linear ampli fi er connections Transceiver Ground IC-4KL Remote controller Coaxial cable (supplied with the IC-4KL) ACC cable (supplied with the IC-4KL) ACC IC.
18 2 INST ALLA TION 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.
T o connect a terminal unit, TNC or scan conv er ter , ref er to the diagram below . F or RTTY oper ation The optional 250 Hz CW narrow fi lters may not pass R TTY signals. Be sure to select the appropriate IF fi lters corresponding to the signal width.
Description Command Frequency setting 05 Operating mode LSB USB AM CW RTTY FM 06 VFO mode selection MAIN ↔ SUB MAIN = SUB Dualwatch OFF Dualwatch ON Main readout selection Sub readout selection 07 M.
21 3 FREQUENCY SETTING ■ When fi r st applying po wer (CPU resetting) Bef ore fi rst applying power , make sure all connections required f or your system are complete by ref erring to chapter 2. Then, reset the transceiver using the f ollow- ing procedure.
• Differences between VFO mode and memory mode 22 3 FREQUENCY SETTING ■ VFO description VFO is an abbre viation of V ariable F requency Oscilla- tor , and traditionally refers to an oscillator .
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 ke y on the keypad 1 – 3 times. - 3 different frequencies can be selected on each band with the band ke y .
A UTO 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 ■ Adv anced tuning functions QUICK TUNING STEP The operating frequency can be changed in kHz steps (1, 5, 9 or 10 kHz selectable) f or quick tuning.
■ T win PBT operation The twin PBT (P assband T uning) function electronically narrows the receiv er ’ s IF passband widths to reduce interf erence. Moving both [TWIN PBT] controls to the same position shifts the IF . - The LCD shows the passband width graphically .
26 4 RECEIVE AND TRANSMIT ■ A uto notch function The auto notch function automatically attenuates more than 3 beat tones, tuning signals, etc., e ven if they are mo ving. The auto notch functions in SSB mode only . q Select SSB mode. w Push [A UTO NO TCH] to tur n the auto notch func- tion ON.
The receiv ed CW audio pitch and monitored CW audio can be adjusted to suit your pref erences (300 to 900 Hz) without changing the operating frequency .
The fi lter selection s witches the IF passband width as shown in the tab le at right. The fi lter selection is automatically memorized in each mode. When an optional fi lter is installed, set the optional fi l- ter setting in set mode. (p . 55) Optional fi lters are not selected by def ault.
When you fi nd a DX station on 21.025 MHz/CW and the station is picking up stations tr ansmitting slightly up from 21.025 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 receiv e fre- quency .
30 4 RECEIVE AND TRANSMIT Dualwatch monitors 2 frequencies with the same mode simultaneously . During dualwatch, both frequencies should be on the same band because the bandpass fi lter in the RF cir- cuit is selected f or the main readout frequency .
31 4 RECEIVE AND TRANSMIT Split frequency operation allows y ou to transmit and receiv e in the same mode on two diff erent frequen- cies. The split frequency operation is basically per- f or med using 2 frequencies on the main and sub readouts. F ollo wing is an e xample of setting 21.
32 4 RECEIVE AND TRANSMIT When you fi nd a DX station, an important considera- tion is how to set the split frequency . When you push the [SPLIT] s witch for 2 sec., split fre- quency operation is turned ON, the sub readout is equalized to the main readout frequency and enters standby f or transmit frequency input.
33 4 RECEIVE AND TRANSMIT The monitor function allows y ou to monitor your tr ans- mit IF signals in any mode through the speak er . Use this to check v oice characteristics while adjusting transmit tones . (p . 54) The CW sidetone functions re- gardless of the [MONIT OR] s witch setting.
34 4 RECEIVE AND TRANSMIT The transceiv er has 3 transmit meter functions f or your con venience . Select the desired meter with the [METER] s witch. • Push [METER] to select RF power (P o), SWR or ALC f or transmit metering.
35 4 RECEIVE AND TRANSMIT The transceiv er has an electronic k e y er . Ke ying speed can be adjusted with [KEY SPEED]. K eying w eight, the ratio of dot : space : dash, can be set from 1 : 1 : 2.8 t o 1:1:4 . 5 i n k e y e r set mode. • Setting the electronic ke yer q Push [CW] to select CW mode.
36 4 RECEIVE AND TRANSMIT The memor y ke yer memorizes and can re-transmit 4 CW ke y codes f or often-used CW sentences, antenna types, etc. T otal capacity of the memor y k ey er is 55 characters in each memory channel. • Programming the memory ke yer q Push [CW] to select CW mode.
37 4 RECEIVE AND TRANSMIT This function allows y ou to displa y the relative strengths of signals around the center frequency . The span can be set to ± 12.5 kHz, ± 25 kHz, ± 50 kHz and ± 100 kHz. Ideal f or monitoring band conditions in an instant.
38 4 RECEIVE AND TRANSMIT A repeater ampli fi es receiv ed signals and retransmits them at a diff erent frequency . When using a repeater , the transmit frequency is shifted from the receiv e fre- quency by an offset frequency .
■ Antenna tuner operation The internal automatic antenna tuner matches the transceiv er to the connected antenna automatically . Once the tuner matches an antenna, the v ar iable ca- pacitor angles are memor ized as a preset point f or each frequency range (100 kHz steps).
• AH-3 HF A UT OMA TIC ANTENNA TUNER The AH-3 matches the IC-756 to a long wire antenna more than 3 m/10 ft long (3.5 MHz and abov e) or more than 12 m/40 ft long (1.8 MHz and abov e). • See p . 18 for the tr ansceiver and AH-3 connection. • See the AH-3 instruction manual for AH-3 installation and antenna connection details.
41 5 MEMOR Y OPERA TION ■ Memory channels The transceiv er has 101 memory channels. The mem- or y mode is v er y useful f or quickly changing to often- used frequencies. All 101 memor y channels are tunable which means the programmed frequency can be tuned tempor ar ily with the tuning dial, etc.
42 5 MEMOR Y OPERA TION ■ Memory channel screen The memor y channel screen simultaneously sho ws 9 memor y channels and their programmed contents . Y ou can select a desired memor y channel from the memor y channel screen.
43 5 MEMOR Y OPERA TION ■ Memory channel pr ogramming Memor y channel programming can be pref or med ei- ther in VFO mode or in memor y mode. • Programming in VFO mode q Set the desired frequency and operating mode in VFO mode. w Push [ Y ]/[ Z ] sev eral times to select the desired memor y channel.
44 5 MEMOR Y OPERA TION • T ransferring in VFO mode This is useful for tr ansf err ing programmed contents to VFO . q Select VFO mode with [VFO/MEMO]. w Select the memor y channel to be transf erred with [ Y ]/[ Z ]. - Memor y channel screen is conv enient for selecting the desired channel.
45 5 MEMOR Y OPERA TION All memor y channels (including scan edges) can be tagged with alphanumeric names of up to 10 charac- ters each. Letters (capitals), numerals , some symbols ( ⁄ , ?, M ) and spaces can be used.
46 5 MEMOR Y OPERA TION • Writing frequencies and operating modes into memo pads Y ou can simply wr ite the accessed readout frequency and operating mode b y pushing [MP-W]. When you write a 6th frequency and operating mode, the oldest written frequency and operating mode are automatically erased to make room f or the new set- tings.
47 6 SCANS ■ Scan types ■ Preparation • Channels F or programmed scan: Program scan edge frequencies into scan edge mem- or y channels P1 and P2. F or ∂ F scan: Set the ∂ F span ( ∂ F scan range) in the scan screen. F or memor y scan: Program 2 or more memory channels e xcept scan edge memor y channels.
48 6 SCANS q If the star t 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 oper ating mode can also be changed while scan- ning. r Push [ (F-4) SCAN] to select the scan screen.
49 6 SCANS Fine scan functions as programmed or ∂ F scan, b ut scan speed decreases when the squelch opens and does not stop . The scanning tuning step shifts from 50 Hz to 10 Hz while the squelch opens. q Select the scan screen from the star t up screen by pushing [ (F-4) SCAN].
50 6 SCANS q If the star t up screen is not selected (if [F-5] ’ s func- tion is [EXIT]), push [F-5] one or more times to exit. w Select memor y mode. e Select the desired operating mode. - The oper ating mode can also be changed while scan- ning. r Push [ (F-4) SCAN] to select the scan screen.
51 7 CLOCK AND TIMERS The transceiv er has a built-in 24-hour cloc k with power-off and po wer-on timer functions . This is useful when logging QSO ’ s and so on.
52 7 CLOCK AND TIMERS The transceiv er can be set to tur n OFF automatically after being activ ated via the power-on timer . The pow er-off per iod can be set to 5 – 120 min. in 5 min. steps. q If the star t up screen is not selected (if [F-5] ’ s func- tion is [EXIT]), push [F-5] one or more times to exit.
53 8 SET MODE ■ Set mode description Set mode is used f or programming infrequently changed values or conditions of functions . This trans- ceiver has a le vel set mode, displa y set mode, timer set mode and miscellaneous (others) set mode.
Tx tone (Treble) This item adjusts the treble le v el of the transmit audio tone in SSB/AM mode from – 12 dB to +12 dB in 2 dB steps. 54 8 SET MODE Tx tone (Bass) This item adjusts the bass le vel of the transmit audio tone in SSB/AM mode from – 12 dB to +12 dB in 2 dB steps.
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 f or the b uilt-in 24-hour clock. See p . 51 for details . ■ Timer set mode 15:00 Push [ (F-4) SET] to enter the time.
56 8 SET MODE Beep (band edge) A beep sounds when an operating frequency enters or e xits an amateur band. This functions independent of the con fi rmation beep setting (above). The volume le vel can be set in le v el set mode. (p . 54) Beep (confirmation) A beep sounds each time a s witch is pushed to con- fi r m it.
57 8 SET MODE FM split offset (HF) This item sets the offset (diff erence betw een tr ansmit and receive frequencies) f or the quick split function. Howe ver , this setting is used f or HF bands in FM mode only and is used to input the repeater offset f or an HF band.
58 8 SET MODE Tuner (PTT start) T uning of the internal antenna tuner can be star ted automatically at the moment the PTT is pushed after the operating frequency is changed (more than 1% from last-tuned frequency).
59 8 SET MODE ■ Miscellaneous (others) set mode (contin ued) Speech speed When the optional UT -102 VOICE SYNTHESIZER UNIT is installed, you can select betw een f aster or slower syn- thesizer output.
60 8 SET MODE CI-V transceive T ransceiv e operation is possible with the IC-756 con- nected to other Icom HF transceiv ers or receivers . When “ ON ” is selected, changing the frequency , op- erating mode , etc. on the IC-756 automatically changes those of connected transceiv ers (or re- ceivers) and vice v ersa.
61 9 OPTION INST ALLA TIONS The UT -102 announces the accessed readout ’ s fre- quency , mode, etc. (S-meter le vel can also be an- nounced — p . 59) in a clear , electronically-generated voice , in English (or Japanese). q Remov e the top and bottom cov ers as shown abov e.
62 9 OPTION INST ALLA TIONS Se v eral IF fi lters are a v ailab le f or the IC-756. Y ou can install 2 fi lters f or 9 MHz and 455 kHz IF . Choose ap- propriate fi lter(s) for y our operating needs. 9 MHz optional fi lters: FL-100 CW NARRO W FIL TER 500 Hz/ – 6 dB FL-101 CW NARRO W FIL TER 250 Hz/ – 6 dB FL-223 SSB NARRO W FIL TER 1.
63 10 MAINTENANCE ■ T roubleshooting The f ollowing char t is designed to help y ou correct problems which are not equipment malfunctions . If you are unab le to locate the cause of a problem or solv e it through the use of this char t, contact your nearest Icom Dealer or Ser vice Center .
CIRCUITR Y FUSE REPLACEMENT The 13.8 V DC from the DC power cab le is applied to all units in the IC-756, e xcept for the po wer ampli fi er , through the circuitr y fuse. This fuse is installed in the P A unit. q Remov e the top cov er as shown on p .
65 10 MAINTENANCE The tension of the tuning dial ma y be adjusted to suit your pref erence. The brak e adjustment screw is located on the right side of the tuning dial.
PA fuse (FGB 5 A) PA unit Clock backup battery FILTER unit Internal antenna tuner 66 11 INTERNAL VIEWS • T op view RF unit R572 Optional voice synthesizer level adj.
67 12 SPECIFICA TIONS ■ General • F requency cover age: Receive 1 0.030 – 60.000 MHz* 1 T ransmit 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 MHz 14.000 – 14.350 MHz 18.068 – 18.168 MHz 21.
68 13 OPTIONS IC-4KL HF 1 kW LINEAR AMPLIFIER Full-duty 1 kW linear ampli fi er including an automatic antenna tuner . Has automatic tuning and band selection capability . Full break-in (QSK) operation is possible . The ampli fi er/po wer supply unit and the remote control unit are separated.
6-9-16 Kamihigashi, Hirano-ku, Osaka 547, J apan A-5415H-1EX- e Printed in Japan Copyright © 1996 by Icom Inc. Count on us!.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Icom IC-756 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Icom IC-756 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Icom IC-756, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Icom IC-756 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Icom IC-756, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Icom IC-756.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Icom IC-756. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Icom IC-756 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
