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Icom IC-756PROII Instruction Manual

Hf/50 mhz all mode transceiver
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INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
i756PRO™

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Summary of Contents for Icom IC-756PROII

  • Page 1 INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i756PRO™...

  • Page 2: Explicit Definitions

    Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin AVOID placing the transceiver in excessively dusty en- assignments, and connection to the IC-756PROII may vironments or in direct sunlight. damage the transceiver. AVOID placing the transceiver against walls or putting anything on top of the transceiver.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS IMPORTANT ........i RTTY reverse mode ..... 28 8 CLOCK AND TIMERS ..63 – 64 CW pitch control ......29 Setting the current time ....63 EXPLICIT DEFINITIONS ..... i IF filter selection ......29 Timer function activity....63 PRECAUTIONS ........

  • Page 4: Panel Description

    (p. 43) Recommended level for • A straight key jack is separately available on the rear an Icom microphone panel. See [KEY] on p. 12. • Keyer polarity (dot and dash) can be reversed in keyer Decreases Increases set mode.
  • Page 5 PANEL DESCRIPTION i RF GAIN CONTROL/SQUELCH CONTROL o RF POWER CONTROL [RF POWER] [RF/SQL] (outer control) Continuously varies the RF output power from min- Adjusts the RF gain and squelch threshold level. imum to maximum (5 W*) (100 W*) * AM mode: 5 W to 40 W The squelch removes noise output from the speaker (closed condition) when no signal is re- Decreases...
  • Page 6 PANEL DESCRIPTION Front panel (continued) EIVER TWIN PBT SPLIT DUAL WATCH CHANGE PBT CLR NOTCH F-INP GENE ¥ M-CL VFO/ MEMO 6PRO™ NOTCH CW PITCH MP-W MP-R MAIN/ LOCK CLEAR RIT/ REC/PLAY LOCK/SPEECH CW/RTTY AM/FM FILTER EXIT/SET COMP BK-IN DELAY KEY SPEED !7 COMPRESSION LEVEL CONTROL [COMP] (p.
  • Page 7 PANEL DESCRIPTION Transfers the memory contents to VFO when 4 What is the AGC? pushed for 1 sec. (p. 54) The AGC controls receiver gain to produce a constant audio output level, even when the received signal strength is varied @8 MAIN/SUB CHANGE SWITCH [CHANGE] by fading, etc.
  • Page 8 PANEL DESCRIPTION Front panel (continued) $7 $6 $5 TWIN PBT CEIVER SPLIT DUAL WATCH CHANGE PBT CLR NOTCH F-INP M-CL GENE VFO/ MEMO 756PRO™ NOTCH CW PITCH MP-W MP-R MAIN/ LOCK CLEAR RIT/ REC/PLAY LOCK/SPEECH CW/RTTY AM/FM FILTER EXIT/SET COMP BK-IN DELAY KEY SPEED #0 LOCK/SPEECH SWITCH [LOCK/SPEECH] Adds the ∂TX shift frequency to the operating frequency when pushed for 1 sec.
  • Page 9 • “AN” appears when auto notch is in use. stacked frequencies in the band. (p. 23) • “MN” appears when manual notch is in use. • Icom’s triple band stacking register memorizes 3 fre- 4 What is the notch function? quencies in each band.
  • Page 10 PANEL DESCRIPTION Front panel (continued) $9 %0 %1 %2 %3 EIVER TWIN PBT SPLIT DUAL WATCH CHANGE PBT CLR NOTCH F-INP GENE M-CL VFO/ MEMO 756PRO™ NOTCH CW PITCH MP-W MP-R MAIN/ LOCK CLEAR RIT/ REC/PLAY LOCK/SPEECH CW/RTTY AM/FM FILTER EXIT/SET COMP BK-IN DELAY KEY SPEED $8 LCD FUNCTION DISPLAY (See p.

  • Page 11: Microphone (Hm-36)

    PTT can damage the internal 8 V regulator. r Main readout squelch switch NOTE: DC voltage is applied to pin 1 for micro- phone operation. Take care when using a non-Icom microphone. • HM-36 SCHEMATIC DIAGRAM MICROPHONE MICROPHONE CABLE MICROPHONE PLUG 10µ...

  • Page 12: Lcd Display

    PANEL DESCRIPTION LCD display qw:pp 2.4k U S B U S B FIL2 qr.qqy.pp METER 1ß 21.085.00 P.AMP 56ß USB FIL2 qr.qpp.pp 21.085.00 -12.5k -12.5k SPECTRUM SPECTRUM SCOPE SCOPE +12.5k +12.5k Grid 10dB 10dB COMP MARKER HOLD WIDE SPAN MARKER HOLD q TX INDICATOR i FREQUENCY READOUTS (p.
  • Page 13 PANEL DESCRIPTION Screen menu arrangement The following screens can be selected from the start Pushing [EXIT/SET] several times returns to the start up screen. Choose the desired screen using the fol- up screen. See p. 65 for set mode arrangement. lowing chart.

  • Page 14: Screen Menu Arrangement

    Accepts the control cable from an optional AH-4 o ALC INPUT JACK [ALC] (p. 18) or AH-3 HF/50 MHz AUTOMATIC ANTENNA TUNER Connects to the ALC output jack of a non-Icom lin- AUTOMATIC ANTENNA TUNER ear amplifier. r ACCESSORY SOCKET 1 [ACC(1)] t ACCESSORY SOCKET 2 [ACC(2)] !0 SEND CONTROL JACK [SEND] (p.

  • Page 15: Panel Description

    PANEL DESCRIPTION !2 ANTENNA CONNECTOR 1 [ANT1] !4 GROUND TERMINAL [GND] (pgs. 14, 15) !3 ANTENNA CONNECTOR 2 [ANT2] (pgs. 14, 15) Connect this terminal to a ground to prevent electri- Accept a 50 Ω antenna with a PL-259 connector. cal shocks, TVI, BCI and other problems.

  • Page 16: Installation And Connections

    The IC-756PROII has an SWR meter to mon- itor the antenna SWR continuously.

  • Page 17: Required Connections

    INSTALLATION AND CONNECTIONS Required connections • Front panel CW KEY HF/50MHz TRANSCEIVER TWIN PBT TIMER 1.8 1 3.5 2 SPLIT POWER DUAL WATCH TRANSMIT CHANGE PBT CLR NOTCH F-INP GENE • M-CL VFO/ MEMO i756PRO™ NOTCH CW PITCH MP-W MP-R PHONES MAIN/ TUNER MONITOR...

  • Page 18: Advanced Connections

    V/UHF band use. RX ANTENNA ACC SOCKETS (p. 13) [SEND], [ALC] (p. 18) AH-4/AH-3 Used for connecting a EXTERNAL SPEAKER (p. 84) (p. 19) non-Icom linear ampli- fier. When using the AH-4/AH-3, it must be connected to the SP-21 AH-2b [ANT1] connector.

  • Page 19: Power Supply Connections

    • The [POWER] switch is OFF. power. Refer to the diagrams below. • 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...

  • Page 20: Linear Amplifier Connections

    Ground (Non-European versions: 100–120/220–240 V European version : 230 V) Turn OFF the transceiver’s antenna tuner while tuning the IC-PW1’s tuner. CONNECTING A NON-ICOM LINEAR AMPLIFIER R WARNING: To an 50 Ω coaxial cable antenna Set the transceiver output power...

  • Page 21: External Antenna Tuner Connections

    INSTALLATION AND CONNECTIONS External antenna tuner connection CONNECTING THE AH-4/AH-3 The AH-4 or AH-3 must be connected to [ANT1]. Long wire or optional AH-2b Coaxial cable (from the AH-4 or AH-3) ANT1 Control cable Transceiver AH-4 or AH-3 Ground 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-...

  • Page 22: Fsk And Afsk (Sstv) Connections

    INSTALLATION AND CONNECTIONS 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

    FREQUENCY SETTING When first applying power (CPU resetting) Before first applying power, make sure all connections required for your system are complete by referring to [POWER] [F-INP] [M-CL] 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: Vfo Description

    MODE The transceiver’s VFO is somewhat different. The VFO SWITCHES Select of the IC-756PROII acts like a computer’s window and can show one frequency and one operating mode. qw:pp 2.4k 2.4k U S B...

  • Page 25: Frequency Setting With The Tuning Dial

    FREQUENCY SETTING Frequency setting with the tuning dial • For ham band use • For general coverage receiver use q Push the desired band key on the keypad 1–3 q Push [GENE] on the keypad 1–3 times. times. • The [GENE] key calls up a frequency for general cov- erage receiver use.

  • Page 26: Advanced Tuning Functions

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

  • Page 27: Receive And Transmit

    RECEIVE AND TRANSMIT Mode selection The following modes are available in the IC- See the diagram below for the order of selection. 756PROII: SSB (LSB/USB), CW, CW-R (CW reverse), RTTY, USB-D LSB-D RTTY-R (RTTY reverse), AM and FM. Data modes of SSB, AM and FM are also available.

  • Page 28: Notch Function

    RECEIVE AND TRANSMIT Notch function This transceiver has auto and manual notch func- While operating the manual notch, noise may be tions. The auto notch function automatically attenu- heard. This comes from the DSP unit and does not ates more than 3 beat tones, tuning signals, etc., indicate an equipment malfunction.

  • Page 29: Noise Blanker

    RECEIVE AND TRANSMIT Noise blanker The noise blanker eliminates pulse-type noise such [NB] switch Tuning dial 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. •...

  • Page 30: Rtty Filter/Twin Peak Filter

    RECEIVE AND TRANSMIT RTTY filter/Twin peak filter y Push [(F-2)Z] to select twin peak filter item. The transceiver has 5 RTTY filters in addition to nor- mal IF filters. The passband width can be selected • The received audio volume may become greater when the twin peak filter is turned ON.

  • Page 31: Cw Pitch Control

    RECEIVE AND TRANSMIT CW pitch control The received CW audio pitch and monitored CW The filter set mode screen graphically displays the audio can be adjusted to suit your preferences (300 to CW pitch operations. (See below.) 900 Hz) without changing the operating frequency. The received CW audio pitch can be adjusted in 25 Hz steps.

  • Page 32: Agc Function

    RECEIVE AND TRANSMIT AGC function The AGC (auto gain control) controls receiver gain to • Setting the AGC time constant produce a constant audio output level even when the q Select the desired mode except FM mode. received signal strength is varied by fading, etc. w Push [AGC] for 1 sec.

  • Page 33: Dualwatch Operation

    RECEIVE AND TRANSMIT Dualwatch operation e Set another desired frequency using the tuning Dualwatch monitors 2 frequencies with the same mode simultaneously. dial. r Adjust [BAL] to set a suitable signal strength bal- During dualwatch, both frequencies should be on the ance between the main and sub readout frequen- same band, because the bandpass filter in the RF cir- cies.

  • Page 34: Split Frequency Operation

    RECEIVE AND TRANSMIT Split frequency operation Split frequency operation allows you to transmit and CONVENIENT receive in the same mode on two different frequen- DIRECT SHIFT FREQUENCY INPUT cies. The split frequency operation is basically per- The shift frequency can be entered directly. formed using 2 frequencies on the main and sub readouts.

  • Page 35: Quick Split Function

    RECEIVE AND TRANSMIT Quick split function w Push [SPLIT] for 1 sec. When you find a DX station, an important considera- tion is how to set the split frequency. • Split frequency operation is turned ON. • The sub readout is equalized to the main readout fre- When you push the [SPLIT] switch for 1 sec., split fre- quency.

  • Page 36: Rit And ∂Tx

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

  • Page 37: Monitor Function

    RECEIVE AND TRANSMIT Monitor function The monitor function allows you to monitor your trans- [MONITOR] switch mit IF signals in any mode through the speaker. Use this to check voice characteristics while adjusting SSB transmit tones. (p. 66) The CW sidetone func- [PHONES] tions regardless of the [MONITOR] switch setting.

  • Page 38: Meter Function

    RECEIVE AND TRANSMIT Meter function The transceiver has 4 transmit meter functions for In addition, the transceiver can display the multi-func- your convenience. Select the desired meter with the tion digital meter in the LCD display, which displays [METER] switch. all transmit meters simultaneously.

  • Page 39: Speech Compressor

    RECEIVE AND TRANSMIT Speech compressor y Push [METER] once to select the COMP meter. The RF speech compressor increases average RF u Adjust the [COMP] control so that the COMP output power, improving signal strength and readabil- ity in SSB. meter reads within 10 dB and 20 dB.

  • Page 40: Digital Voice Recorder

    RECEIVE AND TRANSMIT Digital voice recorder The transceiver has a total of 8 memory channels, 4 Providing a transmission memory is very convenient each for transmit and receive, of digital voice memo- for repeated CQ and number transmissions at contest ries.
  • Page 41 RECEIVE AND TRANSMIT Digital voice recorder (continued) • One-touch voice recording [REC/PLAY] switch To records the receiving signal contents immediately, one-touch voice recording is available. q Push [REC/PLAY] for 1 sec. during receiving a sig- nal to start recording. • “REC” flashes. •...

  • Page 42: Recording A Message For Transmit

    RECEIVE AND TRANSMIT Digital voice recorder (continued) r Push the desired memory channel switch, • Recording a message for transmit [(F-1)T1] – [(F-4)T4], momentarily to start playback To transmit a message using a voice recorder, record and confirmation. the desired message in advance as described below. VOICE MIC-RECORD VOICE MIC-RECORD q Push [EXIT/SET] several times to close a multi-...
  • Page 43 RECEIVE AND TRANSMIT Digital voice recorder (continued) • Sending a message for transmit • Transmit monitor function q Push [EXIT/SET] several times to close a multi- The monitor function can be automatically turned ON function screen, if necessary. while transmitting a voice memory message. w Select a phone mode by pushing [SSB] or q Call up the voice recorder screen as described at [AM/FM].

  • Page 44: Rtty Decoder

    RECEIVE AND TRANSMIT RTTY decoder u Push [(F-2)CLR] for 1 sec. to clear the displayed The transceiver has an RTTY decoder for Baudot (mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps). characters. i Push [EXIT/SET] to exit the RTTY decoder screen. An external terminal unit (TU) or terminal node con- troller (TNC) is not necessary for receiving a Baudot •...

  • Page 45: Electronic Cw Keyer

    RECEIVE AND TRANSMIT Electronic CW keyer o Push [(F-2)√] to select the “Rise Time” item. The transceiver has an electronic keyer. Keying speed can be adjusted with [KEY SPEED]. Keying K E Y E R C W - K E Y KE YE R C W- KE Y weight, the ratio of dot : space : dash, can be set from K e y e r...

  • Page 46: Memory Keyer

    RECEIVE AND TRANSMIT Memory keyer t Push [EXIT/SET] twice to exit the memory keyer The memory keyer memorizes and can re-transmit 4 CW key codes for often-used CW sentences, antenna screen. types, etc. Total capacity of the memory keyer is 55 characters in each memory channel.

  • Page 47: Spectrum Scope Screen

    RECEIVE AND TRANSMIT Spectrum scope screen This function allows you to display the relative • Spectrum scope during transmitting strengths of signals around the center frequency. The The spectrum scope shows the transmit signal wave- span can be set to ±12.5 kHz, ±25 kHz, ±50 kHz and form while transmitting.

  • Page 48: Automatic Antenna Selection

    RECEIVE AND TRANSMIT Automatic antenna selection The transceiver covers 0.1–60 MHz over 10 bands. • Antenna switch selection example Each band key has a band memory which can mem- Under the following condition, “Auto” should be se- orize a selected antenna (ANT1, ANT2, ANT1/RX an- lected as the [ANT] switch set mode item.

  • Page 49: Repeater Operation

    RECEIVE AND TRANSMIT Repeater operation A repeater amplifies received signals and retransmits • Setting the repeater tone them at a different frequency. When using a repeater, Some repeaters require subaudible tones to be ac- the transmit frequency is shifted from the receive fre- cessed.

  • Page 50: Tone Squelch Operation

    RECEIVE AND TRANSMIT Tone squelch operation The tone squelch opens only when receiving a signal • Setting the tone squelch tone containing a matching subaudible tone. You can The transceiver has 50 tones from 67.0 Hz to silently wait for calls from group members using the 254.1 Hz.

  • Page 51: Antenna Tuner Operation

    RECEIVE AND TRANSMIT Antenna tuner operation CAUTION: The internal automatic antenna tuner matches the NEVER transmit with the tuner ON transceiver to the connected antenna automatically. when no antenna is connected. This will damage Once the tuner matches an antenna, the variable ca- the transceiver.

  • Page 52: Optional External Tuner Operation

    Optional external tuner operation • AH-4/AH-3 HF AUTOMATIC ANTENNA TUNER The AH-4/AH-3 matches the IC-756PROII to a long • When connecting the AH-4/AH-3, the antenna wire antenna more than 3 m/10 ft long (3.5 MHz and connector assignments are [ANT2] for the internal above) or more than 12 m/40 ft long (1.8 MHz and...

  • Page 53: Memory Operation

    MEMORY OPERATION Memory channels The transceiver has 101 memory channels. The mem- All 101 memory channels are tuneable which means ory mode is very useful for quickly changing to often- the programmed frequency can be tuned temporarily used frequencies. with the tuning dial, etc. in memory mode. MEMORY MEMORY TRANSFER...

  • Page 54: Memory Channel Screen

    MEMORY OPERATION Memory channel screen The memory channel screen simultaneously shows 7 • Setting a memory channel as a select memory channels and their programmed contents. 13 memory memory channels can be displayed in the wide mem- Select memory channels are used for select memory ory channel screen.

  • Page 55: Memory Channel Programming

    MEMORY OPERATION Memory channel programming Memory channel programming can be preformed ei- ther in VFO mode or in memory mode. • Programming in VFO mode [EXAMPLE]: Programming 7.088 MHz/LSB into memory channel 12. q Set the desired frequency and operating mode in VFO mode.

  • Page 56: Frequency Transferring

    MEMORY OPERATION Frequency transferring The frequency and operating mode in a memory chan- Frequency transferring can be performed in either VFO nel can be transferred to the VFO. mode or memory mode. • Transferring in VFO mode TRANSFERRING EXAMPLE IN VFO MODE Operating frequency : 21.320 MHz/USB (VFO) This is useful for transferring programmed contents to...

  • Page 57: Memory Names

    MEMORY OPERATION Memory names r Push [(F-4)NAME] to edit memory channel name. All memory channels (including scan edges) can be tagged with alphanumeric names of up to 10 charac- • A cursor appears and blinks. • Memory channel names of blank channels cannot be ters each.

  • Page 58: Memo Pads

    MEMORY OPERATION Memo pads The transceiver has a memo pad function to store fre- Memo pads are convenient when you want to memo- quency and operating mode for easy write and recall. rize a frequency and operating mode temporarily, such The memo pads are separate from memory channels.

  • Page 59: Scans

    SCANS Scan types • The scan function can be used on the main readout only. • You can operate a scan while operating on a frequency using the dualwatch or split functions. See p. 31 for details. PROGRAMMED SCAN ∂F SCAN Repeatedly scans between two scan edge frequencies Repeatedly scans within ∂F span area.

  • Page 60: Programmed Scan Operation

    SCANS Programmed scan operation q Push [EXIT/SET] several times to close a multi- y Push [(F-1)PROG] to start the programmed scan. function screen, if necessary. • Decimal points blink while scanning. w Select VFO mode. qw:pp 2.4k 2.4k e Select the desired operating mode. U S B U S B FIL2...

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

    SCANS Fine programmed scan/fine ∂F scan t Push [(F-3)FINE] to start a fine scan. Fine scan functions as programmed or ∂F scan, but • “FINE PROGRAM SCAN” or “FINE ∂F SCAN” ap- scan speed decreases when the squelch opens but pears.

  • Page 62: Select Memory Scan Operation

    SCANS Select memory scan operation q Push [EXIT/SET] several times to close a multi- y Push [(F-3)SELECT] to start select memory scan; function screen, if necessary. push [(F-3)SELECT] again to return to memory w Select memory mode. scan, if desired. e Push [(F-5)SCAN] to select the scan screen.

  • Page 63: Scan Set Mode

    SCANS Scan set mode Scan set mode is used for programming scanning • Scan resume condition speed and scan resume condition. This item sets the scan resume function ON or OFF. ON: scan resumes 10 sec. after stopping on a signal •...

  • Page 64: Tone Scan

    SCANS Tone scan t Push [(F-5)T-SCAN] to start the tone scan. The transceiver can detect the subaudible tone fre- quency in a received signal. By monitoring a signal • “SCAN” flashes while scanning. that is being transmitted on a repeater input fre- TONE FREQUENCY TONE FREQUENCY quency, you can determine the tone frequency re-...

  • Page 65: Clock And Timers

    CLOCK AND TIMERS Setting the current time r Set the current time using the tuning dial. The transceiver has a built-in 24-hour clock with power-off and power-on timer functions. This is useful • “TIME–set Push [SET]” blinks. when logging QSO’s and so on. The clock indication TIME SET TIME SET is always displayed except after pushing [F-INP].

  • Page 66: Setting Power-On Time

    CLOCK AND TIMERS Setting power-on time r Set the desired power-on time using the tuning The transceiver can be set to turn ON automatically at a specified time. dial. • “TIMER–set Push [SET]” blinks. q Push [EXIT/SET] several times to close a multi- TIME SET TIME SET function screen, if necessary.

  • Page 67: Set Mode

    SET MODE Set mode description t Push [(F-1)Y] or [(F-2)Z] to select the desired item. Set mode is used for programming infrequently y Set the desired condition using the tuning dial. changed values or conditions of functions. This trans- ceiver has a level set mode, display set mode, timer •...

  • Page 68: Level Set Mode

    SET MODE Level set mode S S S S B B T T x x T T o o n n e e ( ( B B a a s s s s ) ) This item adjusts the bass level of the transmit audio  ...

  • Page 69: Display Set Mode

    SET MODE 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 70: Dsp Filter Set Mode

    SET MODE Display set mode (continued) M M y y C C a a l l l l t Input the desired character by rotating the tuning dial or by pushing the band key for number input. Your call sign, etc. can be displayed in the opening •...

  • Page 71: Timer Set Mode

    SET MODE Timer set mode T T i i m m e e ( ( N N o o w w ) ) 1 1 5 5 : : 0 0 0 0 This item sets the current time for the built-in 24-hour clock.

  • Page 72: Miscellaneous (Others) Set Mode

    SET MODE Miscellaneous (others) set mode C C a a l l i i b b r r a a t t i i o o n n M M a a r r k k e e r r This item is used for a simple frequency check of the O O N N O O F F F F...
  • Page 73 SET MODE Miscellaneous (others) set mode (continued) F F M M S S P P L L I I T T O O f f f f s s e e t t ( ( H H F F ) ) - - 0 0 .
  • Page 74 SET MODE Miscellaneous (others) set mode (continued) [ [ A A N N T T ] ] S S w w i i t t c c h h A A u u t t o o Antenna switch is activated and the You can set the antenna connector selection to auto- selection is automatically memorized.
  • Page 75 SET MODE Miscellaneous (others) set mode (continued) R R T T T T Y Y D D e e c c o o d d e e N N e e w w L L i i n n e e C C o o d d e e C C R R , , L L F F , , C C R R + + L L F F C C R R + + L L F F This item selects the new line code of the internal...
  • Page 76 SET MODE Miscellaneous (others) set mode (continued) M M I I C C U U p p / / D D o o w w n n S S p p e e e e d d H H I I G G H H L L O O W W This item sets the rate at which frequencies are scanned when the microphone [UP]/[DN] switches...

  • Page 77: Set Mode

    Address of 64h Address of 7Fh The IC-756PROII’s address is 64h. (default) When 2 or more IC-756PROII’s are connected to an optional CT-17 , rotate the tun- V LEVEL CONVERTER ing dial to select a different address for each IC- 756PROII in the range 01h to 7Fh.

  • Page 78: Option Installation

    OPTION INSTALLATION Opening the transceiver’s case Follow the case and cover opening procedures shown CAUTION: DISCONNECT the DC power cable here when you want to install an optional unit or adjust from the transceiver before performing any work on the internal units, etc. the transceiver.

  • Page 79: Maintenance

    The following chart is designed to help you correct If you are unable to locate the cause of a problem or problems which are not equipment malfunctions. solve it through the use of this chart, contact your near- est Icom Dealer or Service Center. PROBLEM POSSIBLE CAUSE SOLUTION REF.

  • Page 80: Fuse Replacement

    The 13.8 V DC from the DC power cable is applied to below. r Replace the PA shielding plate and top cover. 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 81: Tuning Dial Brake Adjustment

    MAINTENANCE 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 Light while turning the dial continuously and evenly in one...

  • Page 82: Internal Views

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

  • Page 83: Control Command

    RS-232C port. The Icom Communi- cations Interface-V (CI-V) controls the following func- tions of the transceiver. personal Up to 4 Icom CI-V transceivers or transceivers can be computer connected to a personal computer equipped with an ct- 17 RS-232C port.

  • Page 84: Control Command

    CONTROL COMMAND • Command table Command Sub command Description Command Sub command Description — Send frequency data Announce with voice synthesizer (00=all data; 01=frequency and Same as Send mode data S-meter level; 02=receive mode) command 06 01 + Level data [AF] level setting (0=max. CCW to —...

  • Page 85: Specifications

    SPECIFICATIONS • General • Receiver • Frequency coverage • Receive system : Triple conversion superheterodyne (Unit: MHz) USA and 0.030–60.000* system others 1.800– 1.999* 3.500– 3.999* • Intermediate frequencies 7.000– 7.300* 10.100–10.150* 64.455 MHz 14.000–14.350* 18.068–18.168* 455 kHz 21.000–21.450* 24.890–24.990* 36 kHz 28.000–29.700* 50.000–54.000*...

  • Page 86: Options

    • Max. input power: 5 W •About DC power supply. •About IC-PW1 LINEAR AMPLIFIER and SP-21 The use of IC-756PROII (#23, #24, #25, #28, #30) in com- EXTERNAL SPEAKER bination with the DC power supply complies with European The IC-PW1 and the SP-21...

  • Page 87: About Ce

    ‘average’ output power and the assessed risk is even lower. • Typical amateur radio installation Versions of the IC-756PROII which display the “CE” Exposure distance assumes that the predominant radiation pat- symbol on the serial number seal, comply with the...
  • Page 88 IC-756PROII #23 <Intended Country of Use> IC-756PROII #24 <Intended Country of Use> IC-756PROII #28 <Intended Country of Use> IC-756PROII #30 <Intended Country of Use> A-6072H-1EX Printed in Japan 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan © 2001 Icom Inc.

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