Icom IC-756PROII Instruction Manual
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Icom IC-756PROII Instruction Manual

Icom IC-756PROII Instruction Manual

Hf/50 mhz all mode transceiver
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INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
i756PRO™
This device complies with Part 15 of the FCC rules. Operation is sub-
ject 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.

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Summary of Contents for Icom IC-756PROII

  • Page 1 INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO™ This device complies with Part 15 of the FCC rules. Operation is sub- ject 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.

  • Page 2: Explicit Definitions

    This will obstruct heat dissipation. Icom, Icom Inc. and the are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. EXPLICIT DEFINITIONS WORD Personal injury, fire hazard or electric...

  • Page 3: Table Of Contents

    IMPORTANT ... i EXPLICIT DEFINITIONS ... i PRECAUTIONS ... i 1 TABLE OF CONTENTS ... 1 2 PANEL DESCRIPTION ... 2 – 13 I Front panel ... 2 I Microphone (HM-36) ... 9 I LCD display ... 10 I Screen menu arrangement ... 11 I Rear panel ...

  • Page 4: Panel Description

    (p. 65) ✔ How to set the microphone gain. Set the [MIC] control so that the ALC meter sometimes swings during normal voice transmission in SSB mode. Recommended level for an Icom microphone CW/RTTY AM/FM FILTER EXIT/SET (dot)
  • Page 5 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 re- ceived. • The squelch is particularly effective for FM. It is also available for other modes.
  • Page 6 PANEL DESCRIPTION I Front panel (continued) EIVER 6PRO™ COMP BK-IN DELAY KEY SPEED !7 COMPRESSION LEVEL CONTROL [COMP] (p. 37) Adjusts the speech compression level in SSB. Compression level decreases COMP !8 SEMI BREAK-IN DELAY CONTROL [BK-IN DELAY] Adjusts the transmit-to-receive switching delay time for CW semi break-in operation.
  • Page 7 ➥ Transfers the memory contents to VFO when pushed for 1 sec. (p. 54) @8 MAIN/SUB CHANGE SWITCH [CHANGE] ➥ Switches the frequency and selected memory channel between main and sub readouts when pushed. • Switches between transmit frequency and receive fre- quency when the split frequency function is ON.
  • Page 8 PANEL DESCRIPTION I Front panel (continued) CEIVER 756PRO™ COMP BK-IN DELAY KEY SPEED #0 LOCK/SPEECH SWITCH [LOCK/SPEECH] ➥ Push momentarily to toggle the dial lock function ON and OFF. (p. 46) ➥ Pushing for 1 sec. announces the S-meter indi- cation and the selected readout frequency when an optional UT-102 is installed.
  • Page 9 ➥ Pushing the same key 2 or 3 times calls up other stacked frequencies in the band. (p. 23) • Icom’s triple band stacking register memorizes 3 fre- quencies in each band. ➥ After pushing [F-INP], enters a keyed frequency or memory channel.
  • Page 10 PANEL DESCRIPTION I Front panel (continued) EIVER 756PRO™ COMP BK-IN DELAY KEY SPEED $8 LCD FUNCTION DISPLAY (See p. 10 for details.) Shows the operating frequency, function switch menus, spectrum screen, memory channel screen, set mode settings, etc. $9 MEMORY UP/DOWN SWITCHES [Y Y ]/[Z Z ] (p. 51) ➥...

  • Page 11: I Microphone (Hm-36)

    Frequency down Squelch open Squelch closed CAUTION: can damage the internal 8 V regulator. NOTE: DC voltage is applied to pin 1 for micro- phone operation. Take care when using a non-Icom microphone. MICROPHONE MICROPHONE CABLE MICROPHONE PLUG 10µ 4700p 0.33µ...

  • Page 12: I Lcd Display

    PANEL DESCRIPTION I LCD display q TX INDICATOR Indicates the frequency readout for transmit. w VFO/MEMORY CHANNEL INDICATOR (pgs. 22, 51) Indicates the VFO mode or selected memory chan- nel number. e SELECT MEMORY CHANNEL INDICATOR (p. 60) Indicates the displayed memory channel is set as a select memory channel.

  • Page 13: I Screen Menu Arrangement

    I Screen menu arrangement The following screens can be selected from the start up screen. Choose the desired screen using the fol- lowing chart. • Start up screen qr.qpp.pp qr.qpp.pp • Voice recorder screen (p. 38) • Memory keyer screen (CW mode: p. 43) •...

  • Page 14: I Rear Panel

    Accepts an 4–8 Ω speaker. o ALC INPUT JACK [ALC] (p. 18) or AH-3 Connects to the ALC output jack of a non-Icom lin- ear amplifier. !0 SEND CONTROL JACK [SEND] (p. 18) Goes to ground while transmitting to control exter- nal equipment such as a linear amplifier.

  • Page 15: Panel Description ........... 2

    !2 ANTENNA CONNECTOR 1 [ANT1] !3 ANTENNA CONNECTOR 2 [ANT2] (pgs. 14, 15) Accept a 50 Ω antenna with a PL-259 connector. When using an optional AH-4 or AH-3 MATIC ANTENNA TUNER HF AUTOMATIC AN- , connect it to the [ANT1] connector. TENNA TUNER The internal antenna tuner activates for [ANT2] and deactivates for [ANT1] when connecting the AH-4 or...

  • Page 16: Installation And Connections

    [GND] the transceiver and antenna. Low SWR allows full power for transmitting even when using the antenna tuner. The IC-756PROII has an SWR meter to mon- itor the antenna SWR continuously. Protect your transceiver from lightning 30 mm Slide the coupling ring down.

  • Page 17: I Required Connections

    I Required connections • Front panel CW KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode. (p. 43) • Rear panel ANTENNA 1, 2 (p. 14) [Example]: ANT1 for 1.8–18 MHz bands ANT2 for 21–50 MHz bands GROUND (p.

  • Page 18: I Advanced Connections

    TWIN PBT SPLIT DUAL WATCH CHANGE PBT CLR NOTCH F-INP M-CL GENE VFO/ MEMO NOTCH CW PITCH MP-W MP-R MAIN/ LOCK CLEAR RIT/ REC/PLAY LOCK/SPEECH AM/FM FILTER EXIT/SET [SEND], [ALC] (p. 18) Used for connecting a non-Icom linear ampli- fier. SP-21...

  • Page 19: I Power Supply Connections

    Make sure: • The [POWER] switch is OFF. • Output voltage of the power source is 12–15 V when you use a non-Icom power supply. • DC power cable polarity is correct. : positive + terminal : negative _ terminal...

  • Page 20: I Linear Amplifier Connections

    AC outlet (Non-European versions: 100–120/220–240 V European version Turn OFF the transceiver’s antenna tuner while tuning the IC-PW1’s tuner. CONNECTING A NON-ICOM LINEAR AMPLIFIER R WARNING: Set the transceiver output power and linear amplifier ALC output level referring to the linear amplifier instruction manual.

  • Page 21: I External Antenna Tuner Connections

    I External antenna tuner connection CONNECTING THE AH-4/AH-3 The AH-4 or AH-3 must be connected to [ANT1]. Coaxial cable (from the AH-4 or AH-3) ANT1 Transceiver I Transverter jack information When 2 to 13.8 V is applied to pin 6 of [ACC(2)], the [XVERT] jack is activated for transverter operation and the antenna connectors do not receive or trans- mit any signals.

  • Page 22: I Fsk And Afsk (Sstv) Connections

    INSTALLATION AND CONNECTIONS I FSK and AFSK (SSTV) connections To connect a terminal unit, TNC or scan converter, refer to the diagram below. For RTTY operation: Narrow filter settings may not pass RTTY signals. Be sure to select the appropriate IF filter settings corresponding to the signal width.

  • Page 23: Frequency Setting

    I When first applying power Before first applying power, make sure all connections required for your system are complete by referring to Chapter 3. Then, reset the transceiver using the fol- lowing procedure. Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values.

  • Page 24: I Vfo Description

    The transceiver’s VFO is somewhat different. The VFO of the IC-756PROII acts like a computer’s window and can show one frequency and one operating mode. You can call up a desired frequency to the VFO with the keypad, memo pad-read switch (see p.

  • Page 25: I Frequency Setting With The Tuning Dial

    I Frequency setting with the tuning dial • For ham band use q Push the desired band key on the keypad 1–3 times. • 3 different frequencies can be selected on each band with the band key. (See “Triple band stacking register” below.) wq.wpp.pp w Rotate the tuning dial to set the desired frequency.

  • Page 26: I Advanced Tuning Functions

    FREQUENCY SETTING I Advanced tuning functions QUICK TUNING STEP The operating frequency can be changed in kHz steps (0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable) for quick tuning. q Push [TS] momentarily to display the quick tuning indicator.

  • Page 27: Receive And Transmit

    I Mode selection The following modes are available in the IC- 756PROII: SSB (LSB/USB), CW, CW-R (CW reverse), RTTY, RTTY-R (RTTY reverse), AM and FM. Data modes of SSB, AM and FM are also available. Microphone signals are muted when data mode is selected.

  • Page 28: I Notch Function

    RECEIVE AND TRANSMIT I Notch function This transceiver has auto and manual notch func- tions. The auto notch function automatically attenu- ates more than 3 beat tones, tuning signals, etc., even if they are moving. The manual notch can be set to attenuate a frequency via the [NOTCH] control.

  • Page 29: I Noise Blanker

    I Noise blanker The noise blanker eliminates pulse-type noise such as from car ignitions. The noise blanker is not avail- able for FM mode. q Push the [NB] switch to turn the noise blanker ON. • [NB] indicator lights. w Push the [NB] switch for 1 sec. to enter the noise blanker level set mode.

  • Page 30: I Rtty Filter/Twin Peak Filter

    RECEIVE AND TRANSMIT I RTTY filter/Twin peak filter The transceiver has 5 RTTY filters in addition to nor- mal IF filters. The passband width can be selected from 1 kHz, 500 Hz, 350 Hz, 300 Hz and 250 Hz. When the RTTY filter is turned ON, the RTTY tuning meter can be used.

  • Page 31: I Cw Pitch Control

    I CW pitch control The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences (300 to 900 Hz) without changing the operating frequency. The received CW audio pitch can be adjusted in 25 Hz steps. I IF filter selection The transceiver has 3 passband width IF filters for each mode.

  • Page 32: I Agc Function

    RECEIVE AND TRANSMIT I AGC function The AGC (auto gain control) controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading, etc. The transceiver has 3 AGC characteristics (time con- stant;...

  • Page 33: I Dualwatch Operation

    I Dualwatch operation Dualwatch monitors 2 frequencies with the same mode simultaneously. During dualwatch, both frequencies should be on the same 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 1 sec.

  • Page 34: I Split Frequency Operation

    RECEIVE AND TRANSMIT I Split frequency operation Split frequency operation allows you to transmit and receive in the same mode on two different frequen- cies. The split frequency operation is basically per- formed using 2 frequencies on the main and sub readouts.

  • Page 35: I Quick Split Function

    I Quick split function When you find a DX station, an important considera- tion is how to set the split frequency. When you push the [SPLIT] switch for 1 sec., split fre- quency operation is turned ON, the sub readout is equalized to the main readout frequency and enters standby for transmit frequency input.

  • Page 36: I Rit And ∂Tx

    RECEIVE AND TRANSMIT I RIT and ∂ ∂ TX • RIT function The RIT function shifts the receive frequency up to ±9.999 kHz in 1 Hz steps (10 Hz steps when can- celling the 1 Hz step readout) without moving the transmit frequency.

  • Page 37: I Monitor Function

    I Monitor function The monitor function allows you to monitor your trans- mit IF signals in any mode through the speaker. Use this to check voice characteristics while adjusting SSB transmit tones. (p. 65) The CW sidetone func- tions regardless of the [MONITOR] switch setting. q Push [MONITOR].

  • Page 38: I Meter Function

    RECEIVE AND TRANSMIT I Meter function The transceiver has 4 transmit meter functions for your convenience. Select the desired meter with the [METER] switch. • Analog transmit meter ➥ Push [METER] to select RF power or compression level (COMP) [METER] switch DISPLAY MEASUREMENT INDICATION...

  • Page 39: I Speech Compressor

    I Speech compressor The RF speech compressor increases average RF output power, improving signal strength and readabil- ity in SSB. • Speech compressor q Select USB or LSB mode. w Push [COMP] momentarily to turn the speech compressor ON and OFF. e Push [COMP] for 1 sec.

  • Page 40: I Digital Voice Recorder

    RECEIVE AND TRANSMIT I Digital voice recorder The transceiver has a total of 8 memory channels, 4 each for transmit and receive, of digital voice memo- ries. A maximum message length of 15 sec. can be recorded in each receive channel, and a total message length of 90 sec.
  • Page 41 I Digital voice recorder • One-touch voice recording To record the receiving signal contents immediately, one-touch voice recording is available. q Push [REC/PLAY] for 1 sec. while receiving a sig- nal to start recording. • “REC” flashes. • Records audio into the channel R4. w Push [REC/PLAY] momentarily to stop recording.
  • Page 42 RECEIVE AND TRANSMIT I Digital voice recorder • Recording a message for transmit To transmit a message using a voice recorder, record the desired message in advance as described below. q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Push [(F-2)VOICE] to call up the voice recorder screen.
  • Page 43 I Digital voice recorder • Sending a message for transmit q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Select a phone mode by pushing [SSB] or [AM/FM]. e Push [(F-2)VOICE] to call up the voice recorder screen.

  • Page 44: I Rtty Decoder

    RECEIVE AND TRANSMIT I RTTY decoder The 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- troller (TNC) is not necessary for receiving a Baudot signal.

  • Page 45: I Electronic Cw Keyer

    I Electronic CW keyer The transceiver has an electronic keyer. Keying speed can be adjusted with [KEY SPEED]. Keying weight, the ratio of dot : space : dash, can be set from 1 : 1 : 2.8 to 1 : 1 : 4.5 in keyer set mode. •...

  • Page 46: I Memory Keyer

    RECEIVE AND TRANSMIT I Memory keyer The memory keyer memorizes and can re-transmit 4 CW key codes for often-used CW sentences, antenna types, etc. Total capacity of the memory keyer is 55 characters in each memory channel. • Programming the memory keyer q Push [EXIT/SET] several times, if necessary.

  • Page 47: I Spectrum Scope Screen

    I Spectrum scope screen This function allows you to display 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 for monitoring band conditions in an instant.

  • Page 48: I Automatic Antenna Selection

    RECEIVE AND TRANSMIT I Automatic antenna selection The transceiver covers 0.1–60 MHz over 10 bands. Each band key has a band memory which can mem- orize a selected antenna (ANT1, ANT2, ANT1/RX an- tenna and ANT2/RX antenna). When you change the operating frequency beyond a band, the previously used antenna is automatically selected for the new band.

  • Page 49: I Repeater Operation

    I Repeater operation A repeater amplifies received signals and retransmits them 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 shift frequency set to the repeater’s offset frequency.

  • Page 50: I Tone Squelch Operation

    RECEIVE AND TRANSMIT I Tone squelch operation The tone squelch opens only when receiving a signal containing a matching subaudible tone. You can silently wait for calls from group members using the same tone. q Push [VFO/MEMO] to select VFO mode. wq.wop.pp qr.wpt.pp w Push the desired band key.

  • Page 51: I Antenna Tuner Operation

    I Antenna tuner operation The internal automatic antenna tuner matches the transceiver to the connected antenna automatically. Once the tuner matches an antenna, the variable ca- pacitor angles are memorized as a preset point for each frequency range (100 kHz steps). Therefore, when you change the frequency range, the variable capacitors are automatically preset to the memorized point.

  • Page 52: I Optional External Tuner Operation

    I Optional external tuner operation • AH-4/AH-3 HF AUTOMATIC ANTENNA TUNER The AH-4 matches the IC-756PROII to a long wire antenna more than 7 m/23 ft long The AH-3 matches the IC-756PROII to a long wire antenna more than 3 m/10 ft long or more than 12 m/40 ft long •...

  • Page 53: Memory Operation

    I Memory channels The transceiver has 101 memory channels. The mem- ory mode is very useful for quickly changing to often- used frequencies. MEMORY MEMORY CHANNEL CHANNEL NUMBER Regular memory 1–99 channels Scan edge memory P1, P2 channels I Memory channel selection •...

  • Page 54: I Memory Channel Screen

    MEMORY OPERATION I Memory channel screen The memory channel screen simultaneously shows 7 memory channels and their programmed contents. 13 memory channels can be displayed in the wide mem- ory channel screen. You can select a desired memory channel from the memory channel screen.

  • Page 55: I Memory Channel Programming

    I 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 in VFO mode. w Push [Y]/[Z] several times to select the desired memory channel.

  • Page 56: I Frequency Transferring

    MEMORY OPERATION I Frequency transferring The frequency and operating mode in a memory chan- nel can be transferred to the VFO. • Transferring in VFO mode This is useful for transferring programmed contents to VFO. q Select VFO mode with [VFO/MEMO]. w Select the memory channel to be transferred with [Y]/[Z].

  • Page 57: I Memory Names

    I Memory names All memory channels (including scan edges) can be tagged with alphanumeric names of up to 10 charac- ters each. Capital letters, small letters, numerals, some symbols (! # $ % & ¥ ? " ’ ` ^ + – ✱ / . , : ; = < > ( ) [ ] { } | _ and spaces can be used.

  • Page 58: I Memo Pads

    MEMORY OPERATION I Memo pads The transceiver has a memo pad function to store fre- quency and operating mode for easy write and recall. The memo pads are separate from memory channels. The default number of memo pads is 5, however, this can be increased to 10 in set mode if desired.

  • Page 59: Scans

    I Scan types PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies (scan edge memory channels P1 and P2). Scan edge P1 or P2 Scan Jump This scan operates in VFO mode. MEMORY SCAN Repeatedly scans all programmed memory channels. Blank channel (select) Mch 2...

  • Page 60: I Programmed Scan Operation

    SCANS I Programmed scan operation q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Select VFO mode. e Select the desired operating mode. • The operating mode can also be changed while scan- ning. r Push [(F-5)SCAN] to select the scan screen. t Set [RF/SQL] open or closed.

  • Page 61: I Fine Programmed Scan/Fine ∂F Scan

    I Fine programmed scan/fine ∂F scan Fine scan functions as programmed or ∂F scan, but scan speed decreases when the squelch opens but does not stop. The scanning tuning step shifts from 50 Hz to 10 Hz while the squelch opens. q Push [EXIT/SET] several times to close a multi- function screen, if necessary.

  • Page 62: I Select Memory Scan Operation

    SCANS I Select memory scan operation q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Select memory mode. e Push [(F-5)SCAN] to select the scan screen. qr.qot.pp qr.wpt.pp r Set [RF/SQL] open or closed. • See p. 57 for scan condition. •...

  • Page 63: I Scan Set Mode

    I Scan set mode Scan set mode is used for programming scanning speed and scan resume condition. • Scan speed The transceiver has 2 speeds for scanning, high and low. q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Push [(F-5)SCAN] to select the scan screen.

  • Page 64: Clock And Timers

    CLOCK AND TIMERS I Setting the current time The transceiver has a built-in 24-hour clock with power-off and power-on timer functions. This is useful when logging QSO’s and so on. The clock indication is always displayed except after pushing [F-INP]. q Push [EXIT/SET] several times to close a multi- function screen, if necessary.

  • Page 65: I Setting Power-On Time

    I Setting power-on time The transceiver can be set to turn ON automatically at a specified time. q Push [EXIT/SET] several times to close a multi- function screen, if necessary. w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to enter timer set mode. e Push [(F-1)Y] or [(F-2)Z] to select the Power-ON Timer Set item.

  • Page 66: Set Mode

    SET MODE I Set mode description Set mode is used for programming infrequently changed values or conditions of functions. This trans- ceiver has a level set mode, display set mode, timer set mode and miscellaneous (others) set mode. • Set mode operation q Push [EXIT/SET] several times to close a multi- function screen, if necessary.

  • Page 67: I Level Set Mode

    I Level set mode This item adjusts the bass level of the transmit audio tone in SSB mode from –5 dB to +5 dB in 1 dB steps. This item adjusts the treble level of the transmit audio tone in SSB mode from –5 dB to +5 dB in 1 dB steps. This item adjusts the transmit IF signal monitor level from 0% to 100% in 1% steps.

  • Page 68: I Display Set Mode

    SET MODE I Display set mode To adjust the LCD contrast or backlight, wait until the LCD becomes stable (10 min. or more after turn- ing power ON). This is an inherent characteristic of LCDs and LCD backlights and does not indicate a transceiver malfunction.

  • Page 69: I Dsp Filter Set Mode

    I Display set mode (continued) Your call sign, etc. can be displayed in the opening screen when turning power ON. Up to 10 characters can be programmed. Capital letters, numerals, some symbols (– / . ) and spaces can be used. q Push [EXIT/SET] several times to close a multi- function screen, if necessary.

  • Page 70: I Timer Set Mode

    SET MODE I Timer set mode This item sets the current time for the built-in 24-hour clock. See p. 62 for details. This item sets the timer functions ON and OFF. When the power-ON timer or the power-OFF timer is used, “ON”...
  • Page 71 I Miscellaneous (others) set mode The [RF/SQL] control can be set as the RF/squelch control (default), the squelch control only (RF gain is fixed at maximum) or ‘Auto’ (RF gain control in SSB, CW and RTTY; squelch control in AM and FM). See p.
  • Page 72 SET MODE I Miscellaneous (others) set mode The internal antenna tuner has an automatic start ca- pability which starts tuning if the SWR is higher than 1.5–3:1. When “OFF” is selected, the tuner remains OFF even when the SWR is poor (1.5–3:1). When “ON” is se- lected, automatic tune starts even when the tuner is turned OFF.
  • Page 73 I Miscellaneous (others) set mode This item selects the USOS (UnShift On Space) func- tion of the internal RTTY decoder. This item selects the new line code of the internal RTTY decoder. CR : Carriage Return LF : Line Feed When the optional UT-102 VOICE SYNTHESIZER UNIT installed, you can select between English and Japan-...
  • Page 74 SET MODE I Miscellaneous (others) set mode This item sets the auto tuning step function. When ro- tating the tuning dial rapidly, the tuning step automat- ically changes several times as selected. There are 2 type of auto tuning steps: HIGH (Fastest) and LOW (Faster).
  • Page 75 To distinguish equipment, each CI-V transceiver has its own Icom standard address in hexadecimal code. The IC-756PROII’s address is 64h. When 2 or more IC-756PROII’s are connected to an optional CT-17 V LEVEL CONVERTER ing dial to select a different address for each IC- 756PROII in the range 01h to 7Fh.

  • Page 76: Option Installation

    OPTION INSTALLATION I Opening the transceiver’s case Follow the case and cover opening procedures shown here when you want to install an optional unit or adjust the internal units, etc. q Remove 2 screws from the left side of the trans- ceiver to remove the carrying handle as shown below.

  • Page 77: Maintenance

    MAINTENANCE If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your near- est Icom Dealer or Service Center. POSSIBLE CAUSE • Re-connect the DC power cable correctly. • Check for the cause, then replace the fuse with the spare one.

  • Page 78: I Fuse Replacement

    • Circuitry fuse ... FGB 5 A CIRCUITRY FUSE REPLACEMENT The 13.8 V DC from the DC power cable is applied to all units in the IC-756PROII, except for the power am- plifier, through the circuitry fuse. This fuse is installed in the PA unit.

  • Page 79: Maintenance ................... 75

    I Tuning dial brake adjustment The tension of the tuning dial may be adjusted to suit your preference. The brake adjustment screw is located on the right side of the tuning dial. See the figure at right. Turn the brake adjustment screw clockwise or coun- terclockwise to obtain a comfortable tension level while turning the dial continuously and evenly in one direction.

  • Page 80: Internal Views

    INTERNAL VIEWS • Top view PA unit PA fuse (FGB 5 A) • Bottom view RF unit PLL unit Internal antenna tuner FILTER unit Clock backup battery SPCH Optional voice synthesizer level adj. Space for optional voice synthesizer (UT-102) MAIN unit...

  • Page 81: Control Command

    RS-232C port. The Icom Communi- cations Interface-V (CI-V) controls the following func- tions of the transceiver. Up to 4 Icom CI-V transceivers or transceivers can be connected to a personal computer equipped with an RS-232C port. See p. 73 for setting the CI-V condition using set mode.
  • Page 82 CONTROL COMMAND • Command table (continued) Command Sub command A1–A7 Set ∂F scan span (A1=±5 kHz, A2=±10 kHz, A3=±20 kHz, A4=±50 kHz, A5=±100 kHz, A6=±500 kHz, A7=±1 MHz) Set as non-select channel Set as select channel Set scan resume OFF Set scan resume ON Turn the split function OFF Turn the split function ON...
  • Page 83 • Command table (continued) Command Sub command 0518 Send/read power-OFF period (5=5 min. to 120=120 min. in 5 min. step) 0519 Send/read calibration marker (0=OFF, 1=ON) 0520 Send/read confirmation beep (0=OFF, 1=ON) 0521 Send/read band edge beep (0=OFF, 1=ON) 0522 Send/read RF/SQL control set (0=Auto, 1=SQL, 2=RF+SQL) 0523...
  • Page 84 CONTROL COMMAND • To send/read memory contents When sending or reading memory contents, additional code as follows must be added to appoint the memory channel. ➥ Additional code: 0000–0101 (0100=P1, 0101=P2) • Band stacking register To send or read the desired band stacking register’s con- tents, combined code of the frequency band and register codes as follows are used.

  • Page 85: Specifications

    • General • Frequency coverage 0.030–60.000 MHz* 1.800– 1.999 MHz* 3.500– 3.999 MHz* 7.000– 7.300 MHz* 10.100–10.150 MHz* 14.000–14.350 MHz* 18.068–18.168 MHz* 21.000–21.450 MHz* 24.890–24.990 MHz* 28.000–29.700 MHz* 50.000–54.000 MHz* Some frequency bands are not guaranteed. Depending on version. • Mode : USB, LSB, CW, RTTY, AM, FM •...

  • Page 86: Options

    • Input impedance: 8 Ω • Max. input power: 5 W •About DC power supply The use of IC-756PROII (#23, #24, #25, #28, #30) in com- bination with the DC power supply complies with European Harmonised Standard regulations under the conditions listed below.

  • Page 87: About Ce

    Similarly some types of transmitter, SSB, CW, AM etc. have a lower ‘average’ output power and the assessed risk is even lower. Versions of the IC-756PROII which display the “CE” symbol on the serial number seal, comply with the essential requirements of the European Radio and Telecommunication Terminal Directive 1999/5/EC.
  • Page 88 <Intended Country of Use> #28 (Italy) NED I ITA IC-756PROII <Intended Country of Use> #30 (Spain) IRL I ESP FRA I POR A-6072H-1EX-w Printed in Japan © 2001 Icom Inc. ITA I AUT ESP I DEN 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan...

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