Icom IC-703 Instruction Manual
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Icom IC-703 Instruction Manual

Hf/50 mhz all mode transceiver
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INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
i703

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Summary of Contents for Icom IC-703

  • Page 1 INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i703...

  • Page 2: Important

    We want to take a before attempting to operate the couple of moments of your time to thank you for mak- transceiver. ing the IC-703 your radio of choice, and hope you SAVE THIS INSTRUCTION MANUAL. This agree with Icom’s philosophy of “technology first.”...

  • Page 3: Table Of Contents

    3.5 (d) mm plug ...........1 6.5 (d) mm Electronic keyer plug......1 u Microphone hanger..........1 Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United King- dom, Germany, France, Spain, Russia and/or other countries.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS 3 BASIC OPERATION ……………………17–26 5 FUNCTION FOR RECEIVE …………… 46–50 I When first applying power (CPU resetting)…… 17 I Simple band scope ……………………………… 46 I Preamp and attenuator ………………………… 46 display selection ………………………… 17 I Initial settings …………………………………… 17 I RIT function ………………………………………...
  • Page 5 TABLE OF CONTENTS 10 DATA COMMUNICATION …………… 67–70 29 [UP]/[DN] speed ………………………… 80 I Connections for packet ………………………… 67 30 Noise blanker in AM mode ……………… 80 31 Available memo pads …………………… 80 D When connecting to [DATA] socket ………… 67 32 Power ON check function ………………...

  • Page 6: Quick Reference Guide

    110/220 V AC, also know as Household current, to a Transceiver steady source of 13.8 V DC. The perfect match to your IC-703 is the PS-125. This Ground plug and play unit plugs into the DC power recepta- to DC...

  • Page 7: Installing Lightning Protection

    There is a connection on the down. Strip the cable back of your IC-703, for HF and 6 m. If you are using jacket and soft solder. one antenna for HF and 6 m, for simplicity, connect...

  • Page 8: Connect Other Peripheral Equipment

    If you do not see the particular item you are wanting the time to connect this gear! We will cover the basic to connect, refer to the Advance Connections section devices that can be connected to your IC-703. starting on page 14. I Operation 1.

  • Page 9: Other Convenient Items

    I Your first contact Now you should have your IC-703 installed in your shack, and like a kid on his birthday, you are probably excited to get on the air. We would like to take you through a few basic operation steps to make your first...

  • Page 10: D Just Listening

    QUICK REFERENCE GUIDE D D Just listening 1. Select the desired band On your IC-703, an easy way of changing bands is by Push [ BAND] or [ BAND] to select the desired using the [ BAND] or [ BAND] located just right band.

  • Page 11: D What Are You Hearing

    Noise Reduction: The noise reduction system on b. Adjusting the Noise Reduction: The noise re- your IC-703 is part of the DSP. This is used to re- duction is completely variable on how much of the duce the hiss and QRM levels.
  • Page 12 BLANK 60dB VFO A NOTE: Your IC-703 is equipped with an AGC cir- cuit. This allows the DSP to filter out interfering sig- nals and QRM, while also taking this interference out of the AGC. Bottom line, this will either elimi-...
  • Page 13 QUICK REFERENCE GUIDE f. Filter: One optional filter can be installed in the IC-703. Narrow filters help reject interference from adjacent signals and obtain good selectivity. Wide filters provide improved audio for SSB opera- tion when no interfering signals are present.

  • Page 14: I Ready To Call Cq

    QUICK REFERENCE GUIDE I Ready to call CQ? [POWER]: OFF [AF]: Max. CCW CCW : counterclockwise RF SQL MODE [P.AMP/ATT]: OFF BAND (indicator lights out) POWER [RF/SQL]: Center P.AMP ATT [TUNER]: OFF TUNER (indicator lights out) M-CH SHIFT DISPLAY PHONES LOCK BAND MENU...

  • Page 15: Speech Compressor

    QUICK REFERENCE GUIDE 2. Speech compressor The IC-703 has a built-in, low distortion speech com- pressor circuit. This circuit increases your average talk power in SSB mode and is especially useful for DX’ing when the receiving station is having difficulty copying your signal.

  • Page 16: Panel Description

    PANEL DESCRIPTION I Front panel RF SQL MODE BAND POWER P.AMP ATT VFO A 60dB TUNER M-CH SHIFT DISPLAY PHONES LOCK BAND MENU q POWER SWITCH [POWER] (p. 17) • When setting as RF gain/squelch control ➥ While transceiver’s power is OFF: Noise squelch (FM mode) Push to turn power ON.
  • Page 17 PANEL DESCRIPTION r FUNCTION DISPLAY o UP/DOWN (BAND) SWITCHES [Y/Z(BAND)] ➥ Push momentarily to select a band. Shows the operating frequency, dot matrix indica- tions, selected memory channel, etc. See p. 9 for • Can also be used to advance or back the quick set details.
  • Page 18 PANEL DESCRIPTION !6 RIT/SUB DIAL SWITCH [RIT/SUB] (pgs. 21, 47) !9 HEADPHONE JACK [PHONES] (p. 14) ➥ Push to toggle the RIT or SUB DIAL function ON Accepts headphones with 8–16 Ω impedance. and OFF—initial set mode is used to select the •...

  • Page 19: I Multi-Function Switches

    PANEL DESCRIPTION I Multi-function switches D M1 functions D M2 functions MENU MENU SPLIT OPERATION (p. 30) MEMORY WRITE (p. 57) ➥ Push momentarily to toggle the split func- Push for 1 sec. to store the selected read- tion ON and OFF. (p. 51) out frequency and operating mode into the displayed memory channel.

  • Page 20: D M4 Functions

    PANEL DESCRIPTION METER SELECTION (p. 52) SPEECH COMPRESSOR (p. 54) ➥ Push momentarily to toggle the speech Selects the type of meter displayed (dur- ing transmit) in the function display. compressor ON and OFF. • Power, ALC or SWR metering can be se- •...

  • Page 21: D S1 Functions

    PANEL DESCRIPTION D S1 functions D S3 functions MENU MENU MEMORY WRITE (p. 57) QUICK BAND CHANGE FUNCTION (p. 22) Push for 1 sec. to store the selected This item provides access to the band stacking regis- readout frequency and operating mode ter.

  • Page 22: I Rear Panel

    HF /50 MH z AUTOMATIC ANTENNA TUNER mote control of the transceiver functions. !0 DC POWER SOCKET [DC13.8V] (p. 15) ➥ Used for transceiver operation with another Icom Accepts 9.0–15.87 V DC through the supplied DC CI-V transceiver or receiver.

  • Page 23: D Data Socket

    PANEL DESCRIPTION D DATA socket DATA PIN No. NAME DESCRIPTION DATA IN Input terminal for data transmit. (1200 bps: AFSK/9600 bps: G3RUH, GMSK) Common ground for DATA IN, DATA OUT and AF OUT. PTT P PTT terminal for packet operation. Connect ground to transmit data. DATA OUT Data out terminal for 9600 bps operation only.

  • Page 24: I Function Display

    PANEL DESCRIPTION I Function display USB CW RTTY AM FM TSQL NB VOX F-BK COM F BLANK VFO A 60dB VFO B ∞ MEMO SWR P 1 1.5 2 q NARROW/WIDE FILTER INDICATORS !0 DOT MATRIX INDICATORS ➥ “ã” appears when selecting AM narrow or FM These alphanumeric readouts show a variety of in- narrow modes.

  • Page 25: I Microphone (Hm-103)

    PANEL DESCRIPTION I Microphone (HM-103) LOCK UP/DOWN SWITCHES [UP]/[DN] LOCK SWITCH [LOCK] Change the operating frequency. Locks the [UP]/[DN] switches. • Push and hold to change the frequency continuously. PTT SWITCH [PTT] • Tuning step is 50 Hz when no TS indicator appears. Push and hold to transmit;...

  • Page 26: Installation And Connections

    In this case, an antenna tuner is useful to match the transceiver and antenna. Low SWR allows full power for transmitting even when using the antenna tuner. The IC-703 has an SWR meter to monitor the antenna SWR continuously.

  • Page 27: I Installation

    INSTALLATION AND CONNECTIONS I Installation D Single body mounting D Stand To raise the stand: Spring washer With the transceiver upside down, pull the stand to- MB-62 wards the rear panel and then upwards, as illus- (optional) trated below. Supplied with the MB-62* then up Pull back...

  • Page 28: I Required Connections

    INSTALLATION AND CONNECTIONS I Required connections RF SQL MODE BAND POWER P.AMP ATT TUNER M-CH SHIFT DISPLAY PHONES LOCK BAND MENU MICROPHONE (p. 10) GROUND (p. 11) Use the heaviest gauge wire or strap available and make the HM-103 connection as short as possible. Grounding prevents electrical shocks, TVI and other problems.

  • Page 29: I Advanced Connections

    INSTALLATION AND CONNECTIONS I Advanced connections RF SQL MODE BAND POWER P.AMP ATT TUNER M-CH SHIFT DISPLAY PHONES LOCK BAND MENU OPC-589 (p. 92) HEADPHONES SPEAKER EXTERNAL Selectable with the [PHONE/SPEAKER] switch SPEAKER (p. 91) on the back of the front panel. SM-20 ACC SOCKET (p.

  • Page 30: I Dc Power Voltage

    (under 11.0 V: power save mode). ting. However when the connected voltage decreases from When 11.3 V voltage is applied, the IC-703 may acti- 13.8 V to 11.0V, the IC-703 switches from normal vate the battery operating mode depending on the mode to battery mode.

  • Page 31: I External Antenna Tuners And Linear Amplifier

    [TRANSCEIVER] Ground Ground with the AT-180 Note: Turn the IC-703’s power OFF when connecting the AT-180, otherwise, the CPU may malfunction and the AT-180 may not function properly. CONNECTING A NON-ICOM LINEAR AMPLIFIER R WARNING: •Set the transceiver output power and linear ampli- •The specifications for the SEND relay are 16 V...

  • Page 32: Basic Operation

    BASIC OPERATION I When first applying power (CPU resetting) Before first applying power, make sure all connections [POWER] required for your system are complete by referring to Chapter 2. Then, reset the transceiver using the fol- lowing procedure. Resetting CLEARS all programmed contents in memory channels and returns all initial set mode and quick set mode contents to their default values.

  • Page 33: I Vfo Description

    (p. 22). MEMORY BAND MEMO PAD CHANNEL The IC-703 has two VFOs, specially suited for split fre- 21.295 MHz 28.025 MHz 7.001 MHz quency operation. The VFOs are called VFO A and VFO B. You can use the desired VFO to call up a fre- quency and operating mode for operation.

  • Page 34: I Frequency Setting

    BASIC OPERATION I Frequency setting • Band selection All HF ham bands, the 50 MHz band and a general coverage receiver band are included in the IC-703. Push [ BAND]/[ BAND] to select the desired band. • Pushing [ BAND]/[ BAND] continuously scrolls through the available bands.
  • Page 35 BASIC OPERATION • 1 Hz and 10 Hz tuning steps When neither the quick tuning step or programmable [MODE] tuning step “ ” appear, rotating the main dial changes the frequency in increments of 1 or 10 Hz. These tuning steps are only available in SSB, CW and RTTY modes.
  • Page 36 BASIC OPERATION • [TS] switch flow chart SSB/CW/RTTY modes Any mode FM/AM modes Appears Appears 10 Hz tuning Programmable step tuning 1 MHz tuning momentarily momentarily (100 Hz –100 kHz) 1 sec. 1 sec. 1 sec. momentarily 1 Hz tuning Appears Selectable for each mode.
  • Page 37 BASIC OPERATION • Quick band change function The quick band change function automatically stores the last frequency and mode used for each band in a band stacking register. This is convenient for contest operation, etc. The tables below show the quick band change default settings for each band.

  • Page 38: I Operating Mode Selection

    BASIC OPERATION I Operating mode selection The following modes are available in the IC-703: [MODE] SSB (LSB/USB), CW, CW-å (CW reverse), RTTY and åRTTY (RTTY reverse), FM, AM. • SSB (LSB/USB), CW, RTTY, SSB-D, FM and AM modes selection To select the desired mode of operation, push [MODE] one or more times, then push [MODE] for 1 sec., if necessary.

  • Page 39: I Squelch And Receive (Rf) Sensitivity

    BASIC OPERATION I Squelch and receive (RF) sensitivity Adjusts the RF gain and squelch threshold level. The [RF/SQL] squelch removes noise output from the speaker (closed position) when no signal is received. • The squelch is particularly effective for FM mode. It is also available for other modes.

  • Page 40: I Dial Lock Function

    BASIC OPERATION Dial lock function The dial lock function prevents accidental changes caused by the tuning dial. ➥ Push [LOCK] to turn the dial lock function ON and OFF. • “LOCK” indicator lights while the dial lock function is activated. [LOCK] Lights while the dial lock function is activated.

  • Page 41: D Setting Output Power

    BASIC OPERATION QUICK SET MODE D Setting output power q Push [DISPLAY] for 1 sec. to select quick set mode. Main dial w Push [MENU] one or more times to select “ .” e Rotate the main dial to select the desired output. •...

  • Page 42: Receive And Transmit

    RECEIVE AND TRANSMIT I Operating SSB q Push [AF] [TX] indicator [MODE] BAND]/[ BAND] to select the desired band. w Push [MODE] momentarily or push for 1 sec. to se- lect LSB or USB mode. • Below 10 MHz LSB is automatically selected; above 10 MHz USB is automatically selected.

  • Page 43: I Operating Cw

    RECEIVE AND TRANSMIT I Operating CW D Connections for CW Rear panel Rear panel Keyer set mode setting [ACC] [KEY] N o r m a l R e v e r s e Paddle For no break-in operation: Connect an external switch 7 6 5 such as a foot switch;...

  • Page 44: D Cw Operation

    RECEIVE AND TRANSMIT D CW operation q Connect a paddle or straight key as at previous [AF] [TX] indicator [MODE] Main dial page. w Push BAND]/[ BAND] to select the desired band. e Push [MODE] momentarily to select CW mode. •...

  • Page 45: D Convenient Functions For Receive

    RECEIVE AND TRANSMIT Convenient functions for receive • Preamp and attenuator (p. 46) • IF shift (p. 47) ➥ Push [P.AMP/ATT] momentarily to set the preamp ➥ Rotate [SHIFT] control. ON or OFF. • Noise reduction (p. 50) • Lights green when the preamp is set to ON. ➥...

  • Page 46: D Cw Pitch Control

    Push [DISPLAY] to exit the keyer set mode. control (600 Hz). D Electronic CW keyer The IC-703 has an electronic keyer. Both keying speed and weight (the ratio of dot : space : dash) can be set. • Setting the electronic keyer q Enter the keyer set mode.

  • Page 47: D Cw Side Tone Function

    RECEIVE AND TRANSMIT D CW side tone function When the transceiver is in the receive condition (and the break-in function is OFF— below) you can listen to the tone of your CW signal without actually trans- mitting. This allows you to match your transmit signal exactly to another station’s.

  • Page 48: I Memory Keyer Functions

    RECEIVE AND TRANSMIT I Memory keyer functions The transceiver has a number of convenient functions for the electronic keyer that can be accessed from the memory keyer menu. q Select CW mode with [MODE]. [MODE] w Push [MODE] for 1 sec. to select the memory keyer send menu.

  • Page 49: D Memory Keyer Send Menu

    RECEIVE AND TRANSMIT D Memory keyer send menu Pre-set characters can be sent using the memory [MODE] keyer send menu. Contents of the memory keyer are set using the edit menu. • Transmitting q Select CW mode with [MODE]. w Push [MODE] for 1 sec. to enter the memory keyer send menu.

  • Page 50: D Editing A Memory Keyer

    Repeat steps t and y to input the desired char- acters. i Push [MENU] or [DISPLAY] three times to return to the keyer send menu. Pre-programmed contents CONTENTS MK1 CQ TEST CQ TEST DE ICOM ICOM T MK2 UR 5NN* BK MK3 CFM TU • indication (default) •...

  • Page 51: D Contest Number Set Mode

    RECEIVE AND TRANSMIT D D Contest number set mode This menu is used to set the contest (serial) number and count up trigger, etc. • Setting contents q Select CW mode with [MODE]. w Enter the memory keyer menu. [MODE] f •...

  • Page 52: D Memory Keyer Set Mode

    RECEIVE AND TRANSMIT D D Memory keyer set mode This set mode is used to set the memory keyer repeat time and indication type of the messages. • Setting contents q Select CW mode with [MODE]. w Enter the memory keyer menu. [MODE] f •...

  • Page 53: I Operating Rtty

    RECEIVE AND TRANSMIT I Operating RTTY D Connections for RTTY (FSK) Rear panel [ACC] TU or TNC Rear panel view Personal computer MSEND (orenge) GND (red) 7 6 5 FSKK (black) SQL* (light green) Connect SQL line when required. AF out (light blue) Colors refer to connection to the supplied ACC cable.

  • Page 54: D Convenient Functions For Receive

    RECEIVE AND TRANSMIT Convenient functions for receive • Preamp and attenuator (p. 46) • IF shift (p. 47) ➥ Push [P.AMP/ATT] momentarily to set the preamp ➥ Rotate [SHIFT] control. ON or OFF. • Noise reduction (p. 50) • Lights green when the preamp is set to ON. ➥...

  • Page 55: D Presetting For Rtty

    RECEIVE AND TRANSMIT D Presetting for RTTY Tone frequency [MODE] Main dial q Push [MODE] momentarily to select RTTY mode. • After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. w Enter the RTTY tone set mode. •...

  • Page 56: I Operating Am

    RECEIVE AND TRANSMIT I Operating AM q Push BAND]/[ BAND] to select the desired [AF] [TX] indicator [MODE] band. w Push [MODE] momentarily or push for 1 sec. to se- lect AM mode. • After FM or AM mode is selected, push [MODE] for 1 sec.

  • Page 57: I Operating Fm

    RECEIVE AND TRANSMIT I Operating FM q Push BAND]/[ BAND] to select the desired [AF] [TX] indicator [MODE] band. w Push [MODE] momentarily or for 1 sec. to select FM mode. • After FM or AM mode is selected, push [MODE] for 1 sec.

  • Page 58: D Tone Squelch Operation

    RECEIVE AND TRANSMIT D Tone squelch operation Tone squelch operation is a method of communica- [MODE] Main dial tions using selective calling. Only received signals having a matching tone will open the squelch. Before communicating using tone squelch, all members of your party must agree on the tone squelch frequency to use.

  • Page 59: D Fm Tone Set Mode

    RECEIVE AND TRANSMIT D FM tone set mode While is selected in FM mode, push [ ] for (F-2) 1 sec. to enter the FM tone set mode. This item selects a subaudible tone for FM-T mode operation to access a repeater. There are 50 tones The default is 88.5 Hz.

  • Page 60: I Repeater Operation

    RECEIVE AND TRANSMIT I Repeater operation A repeater amplifies received signals and re-transmits [MODE] Main dial 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 61: Function For Receive

    FUNCTION FOR RECEIVE I Simple band scope This function allows you to visually “sweep” an area Main dial surrounding the set frequency for other signals. De- tected signals are indicated graphically in the dot ma- trix section of the display. NOTE: Use the attenuator or turn OFF the preamp when using the band scope on a band containing a lot...

  • Page 62: I Rit Function

    FUNCTION FOR RECEIVE I RIT function The RIT (Receive Incremental Tuning) function com- pensates for off-frequencies of communicating sta- tions. The function shifts the receive frequency up to ±9.99 kHz in 10 Hz steps without moving the transmit frequency. “ ”...

  • Page 63: I Noise Blanker

    FUNCTION FOR RECEIVE I Noise blanker The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function is not effective for FM mode or for non pulse- type noise. If you don’t want to use the noise blanker for AM communications, the “...

  • Page 64: I Optional Filter Selection

    FL-257* SSB, CW, RTTY 3.3 kHz/–6 dB *Optional filter. **Although the FL-96 is not listed on the option list, IC-703 would take FL-96 as well as other optional filter. • Optional filter installation and selection tables SSB, CW, RTTY Normal...

  • Page 65: I Peak Meter Hold

    FUNCTION FOR RECEIVE I Peak meter hold INITIAL SET MODE The peak meter hold function freezes the highest dis- [EXAMPLE]: played bar segment in any meter function for about 60dB Initial reception of a 0.5 sec. so that you can more easily read the meter. signal results in an This function can be turned ON and OFF in initial set S-meter reading of...

  • Page 66: Function For Transmit

    FUNCTION FOR TRANSMIT I Split frequency operation Split frequency operation allows you to transmit and receive on two different frequencies. Split frequency operation uses 2 frequencies, one in VFO A and the other in VFO B. Following is an example of setting 7.057 MHz, CW mode in VFO A (for receiving) and 7.025 MHz, CW [F-1] [F-3]...

  • Page 67: D Quick Split Function

    FUNCTION FOR TRANSMIT D Quick split function , when you push [ ] for 1 sec., split fre- (F-1) quency operation is turned ON and VFO B is auto- matically changed according to the plus/minus pre-programmed shift frequency set in initial set mode (or equalized when 0 kHz is programmed as the split shift frequency).

  • Page 68: I Vox Operation

    FUNCTION FOR TRANSMIT I VOX operation The VOX (Voice-operated Transmission) function tog- gles between transmit and receive with your voice. This function provides an opportunity to input log en- tries into your computer, etc., while operating. q Select • Push [DISPLAY] once or twice to select . [F-1] •...

  • Page 69: I Speech Compressor

    FUNCTION FOR TRANSMIT I Speech compressor The IC-703 has a built-in, low distortion speech com- [MODE] pressor circuit. This circuit increases your average talk power in SSB mode and is especially useful for DX’ing when the receiving station is having difficulty copying your signal.

  • Page 70: I Swr

    FUNCTION FOR TRANSMIT I SWR D Measuring SWR The IC-703 has a built-in circuit for measuring an- [MODE] tenna SWR—no external equipment or special ad- justments are necessary. The IC-703 can measure SWR in 2 ways: (A) Spot measurement; or (B) Plot measurement.

  • Page 71: Memory Operation

    MEMORY OPERATION I Memory channels The transceiver has 105 memory channels (includes 6 NOTE: During split frequency operation, pro- scan edge channels). Memory mode is useful for grammed memory contents can be called up to the quickly changing to often-used frequencies. SUB readout (dot matrix portion of the display).

  • Page 72: I Memory Programming

    MEMORY OPERATION I Memory programming • Programming in VFO mode q Select functions. • Push [DISPLAY] once or twice to select . • Push [MENU] one or more times to select w Set the desired frequency and operating mode in VFO mode.

  • Page 73: I Memory Clearing

    MEMORY OPERATION I Memory clearing Any unnecessary memory channels can be cleared. The cleared memory channels become blank chan- nels. q Select functions. • Push [DISPLAY] once or twice to select . • Push [MENU] one or more times to select [F-3] w Push [ ] to select memory mode.

  • Page 74: I Memory Names

    MEMORY OPERATION I Memory names All memory channels (including scan edges) can be tagged with alphanumeric names of up to 9 charac- ters each. All common keyboard characters (ASCII characters 33 to 126) can be used, including numerals and punc- tuation marks.

  • Page 75: I Memo Pads

    MEMORY OPERATION I 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 76: Scan Operation

    SCAN OPERATION I Scan types PROGRAMMED SCAN PRIORITY WATCH Repeatedly scans between two scan edge frequencies Checks for signals on a memory while operating on a (scan edge memory channels 1A and 1B). VFO frequency. Scan Scan edge 1A or 1B Scan edge 1B or 1A Memory frequency...

  • Page 77: I Programmed Scan Operation

    SCAN OPERATION I Programmed scan operation q Select VFO mode. w Select the desired operating mode. • The operating mode can also be changed while scan- ning. e Set [SQL] open or closed. • See page a left for squelch condition. r Select [F-1] •...

  • Page 78: I Select Memory Scan Operation

    SCAN OPERATION I Select memory scan operation q Select memory mode. w Close the squelch with [SQL]. e Select • Push [DISPLAY] once or twice to select . • Push [MENU] one or more times to select r Push [ ] to start the memory scan.

  • Page 79: Antenna Tuner Operation

    ANTENNA TUNER OPERATION I Antenna tuner operation D Internal antenna tuner The internal automatic antenna tuner matches the CAUTION: 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 latching relays the transceiver.

  • Page 80: D Optional External Tuner Operation

    NOTE: When connecting the optional antenna tuner NOTE: When the connected power supply voltage AT-180, the IC-703’s output power must be set max- is lower than 11.0 V, the transceiver automatically imum (10 W) both in quick set mode and initial set switches to the battery operating mode (power sav- mode.

  • Page 81: D Optional

    ANTENNA TUNER OPERATION D Optional AH-4 operation AUTOMATIC ANTENNA TUNER The AH-4 matches the IC-703 to a long wire antenna AH-4 operation more than 7 m/23 ft long (3.5 MHz and above). Tuning is required for each frequency. Be sure to •...

  • Page 82: Data Communication

    DATA COMMUNICATION I Connections for packet D When connecting to [DATA] socket RX AUDIO AF OUT TNC SIDE DATA OUT PTTP TX AUDIO DATA IN DATA Rear panel RS-232C TU or TNC Personal computer D When connecting to [ACC] socket Rear panel [ACC] Rear panel...

  • Page 83: I Packet (Afsk) Operation

    DATA COMMUNICATION I Packet (AFSK) operation Before operating packet (AFSK) be sure to consult [AF] [TX] indicator [MODE] Main dial the operating manual that came with your TNC. q Connect a TNC and PC as left page. w Push BAND]/[ BAND] to select the desired band.

  • Page 84: D Ssb-D Mode Selection

    DATA COMMUNICATION D SSB-D mode selection q Push [MODE] one or more times to select RTTY [MODE] mode. w Push [MODE] for 1 sec. to SSB-D mode. • After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. NOTE: When SSB-D mode is selected, the audio input from the [MIC] connector is automatically cut, and the audio input from the [ACC] is used.

  • Page 85: D Adjusting The Transmit Signal From The Tnc

    • The conditions selected in initial set mode are now ef- 2. When not using a measuring device. fective. q Connect the IC-703 to a TNC. When setting data transmission speed to 9600 bps, w Enter a test mode (“CAL”, etc.) on the TNC, then...

  • Page 86: Control Command

    RS-232C port. The Icom Communi- cation interface-V (CI-V) controls the following func- tions of the transceiver. Up to four Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an Personal RS-232C port. See p. 82 for setting the CI-V condition computer using initial set mode.

  • Page 87: D Command Table

    CONTROL COMMAND Command table Command Sub command Description Command Sub command Description 0A + Level data RF power setting (0=mini. to — Send frequency data 255=max.) Same as Send mode data 0B + Level data Microphone gain setting (0=mini. command 06 to 255=max.) —...

  • Page 88: D Band Stacking Register

    CONTROL COMMAND Command table (continued) • Register code Code Registered number Command Sub command Description 0314 Send/read RTTY marker fre- quency (0=1275 Hz, 1=1615 Hz, 2=2125 Hz) 0315 Send/read RTTY shift width D D Codes for memory keyer contents (0=170 Hz, 1=200 Hz, 2=425 Hz) To send or read the desired memory keyer contents, the 0316 Send/read RTTY keying polarity...

  • Page 89: Set Mode

    SET MODE I General Set mode is used for programming infrequently changed values or conditions of functions. The IC-703 has 2 separate set modes: quick set mode and initial set mode. D Quick set mode operation q While power is ON, push [DISPLAY] for 1 sec.

  • Page 90: I Quick Set Mode Items

    SET MODE I Quick set mode items Mode Set mode item Default setting Mode Set mode item Default setting RTTY 5 level n (normal) 0 [Hz] SSB-D L (LSB side) 20 [WPM] FM/AM n (normal) 5 level (all modes) The default is H (maximum power). This item adjusts the RF output power.

  • Page 91: I Initial Set Mode Items

    SET MODE I Initial set mode items (Max. output power setting) This item selects maximum output power. The max. The default is 10 W. power is can be set 10, 5, 2.5, 1 or 0.5 W. (Power save setting) The power save mode reduces the current drain to conserve battery power.

  • Page 92: Confirmation Beeps

    SET MODE (Confirmation beeps) A beep sounds each time a switch is pushed to con- firm it. This function can be turned OFF for silent op- Confirmation beep ON Confirmation beep OFF eration. (default) (Band edges beep) A beep sounds when an operating frequency enters or exits a transmit frequency range.

  • Page 93: Ssb/Cw Frequency Shift Setting

    SET MODE (SSB/CW frequency shift setting) This item selects the displayed frequency shift func- tion from ON and OFF. When this function is activated, the receiving signal can be kept in receive even when the operating mode Synchronous tuning ON Synchronous tuning OFF is changed between SSB and CW.

  • Page 94: Current Intercept Point

    (default). is selected. each mode and see p. 87 for filter installation. Although the FL-96 is not listed on the option list, IC-703 would take FL-96 as well as other optional filter. (Peak meter hold setting) When the peak hold function is ON, the highest acti- vated segment of the meter remains visible for 0.5...

  • Page 95: Split Lock Function

    SET MODE (Split lock function) When this item is ON, the main dial can be used to adjust the transmit frequency while pushing ] even when the lock function is activated. (F-3) Split lock function OFF Split lock function ON (default) (Split offset frequency) This item sets the offset (difference between transmit...

  • Page 96: Power On Check Function

    SET MODE (Power on check function) This item selects the indication ON or OFF when turn- ing power ON. Power on check ON Power on check OFF on : The Transceiver briefly displays ‘All indication,’ (default) ‘RF power’ and ‘Power supply voltage’ when turning power ON.

  • Page 97: Voice Synthesizer Language

    The IC-703’s address is 68H. Address set to 68H Address set to 7FH. (default). When 2 or more IC-703’s are connected to an op- tional CT-17 , rotate the main V LEVEL CONVERTER dial to select a different address for each IC-703 in the range 01H to 7FH.

  • Page 98: Maintenance

    CAUTION: Disconnect the DC power cable from the transceiver when changing a fuse. The IC-703 has three of fuses (DC power cable fuses× 2, circuitry fuse × 1) installed for transceiver protection. • Fuses ..........F.G.B. 125 V 4 A CIRCUITRY FUSE REPLACEMENT The 13.8 V DC from the DC power cable is applied to...

  • Page 99: Troubleshooting

    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 100 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION REF. Transmitting is impossi- The operating frequency is not set to Set the frequency to a ham band. p. 19 ble. a ham band. pgs. 25, Output power is too low. Power is set to a lower power than Set the output power in quick set maximum.

  • Page 101: Installations And Settings

    OPTION UNIT INSTALLATIONS AND SETTINGS I Opening the transceiver case Caution: Disconnect the DC power cable from the transceiver before performing any work on the To remove the transceiver case unscrew the 18 screws transceiver. (5 in the top panel, 5 in the bottom panel, 8 in the side panels: 4 pieces each) as shown in the diagram below.

  • Page 102: I If Filter

    OPTION UNIT INSTALLATIONS AND SETTINGS I IF filter r Install the desired filter as shown in the diagram Several IF filters are available for the IC-703. Choose a filter most appropriate to your operating needs. below. NOTE: After filter installation, specify the installed filter using initial set mode (item 22, p.79).

  • Page 103: Carrying Handle

    OPTION UNIT INSTALLATIONS AND SETTINGS I UT-106 DSP RECEIVER UNIT q Open the transceiver top cover as shown on p. 86. w Remove the 4-pin connector (P2451) from main CPU shielding case on the MAIN unit (top side) Front side and plug it into J1 of the UT-106.

  • Page 104: I At-180 Internal Switch Description

    OPTION UNIT INSTALLATIONS AND SETTINGS I AT-180 internal switch description The optional AT-180 has 3 operating conditions for HF band operation. Select a suitable condition according to your antenna system. q Remove the top cover of the AT-180. w Set the tuner switches to the desired positions ac- cording to the table below.

  • Page 105: Specifications

    SPECIFICATIONS I General I Receiver • Frequency coverage : Receive • Receive system : Double-conversion superheterodyne 30 kHz – 60.00000 MHz* • Intermediate frequencies: Transmit 64.455 MHz 1.800 – 1.99999 MHz* 455 kHz 3.500 – 3.9999 MHz* • Sensitivity at pre-amp ON (typical) 7.000 –...

  • Page 106: Options

    OPTIONS AT-180 AH-4 AH-2b HF/50 MHz AUTOMATIC HF AUTOMATIC ANTENNA ANTENNA ELEMENT ANTENNA TUNER TUNER A 2.5 m long antenna ele- ment for mobile operation with the AH-4. • Frequency coverage 7–54 MHz band with the AH-4 Fully automatic antenna tuner with preset Specially designed to tune a long wire an- memories for each 100 kHz.
  • Page 107 Provide front panel detached operation for Convenient when carrying the transceiver. Allows you to conveniently vehicle-mount mobile installations or compact transceiver the front panel of the IC-703. An MB-63 operation. must be used in combination with the MB- • OPC-581: 3.5 m (11.5 ft) •...

  • Page 108: Menu Guide

    MENU GUIDE + power ON LOCK Power OFF then ON to exit initial set mode. Initial set mode No. Indication Description No. Indication Description Max. output power setting Peak meter hold setting Power save setting Quick split function MENU Split lock function Simple mode setting Split offset frequency Mode availability...

  • Page 109: Quick Set Mode

    MENU GUIDE MENU DISPLAY (in memory mode) MENU (SSB/AM) DISPLAY (CW) (RTTY) DISPLAY MODE (SSB-D) MENU (FM) DISPLAY DISPLAY For 1 sec. Quick set mode SSB/AM/FM RTTY SSB-D mode mode mode mode MENU M-CH SSB mode only...

  • Page 110: About Ce

    Further in- Versions of the IC-703 which display the formation can be found at http://www.arrl.org/. “CE” symbol on the serial number seal, comply with the essential requirements of •...
  • Page 111 ABOUT CE DECLARATION OF CONFORMITY We Icom Inc. Japan 1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and Telecommunications Terminal Equipment Directive, 1999/5/EC, and that any applicable Essential Test Düsseldorf 14th Mar.
  • Page 112 I IRL I LUX I NOR IC-703 <Intended Country of Use> #10, #20 GER I FRA I ESP (Italy) NED I POR HF only BEL I ITA A-6241H-1EX-q Printed in Japan 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan © 2003 Icom Inc.

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