ICOM orporated IC-703 HF / VHF Amateur Transceiver User Manual IC 703 INSTRUCTION MANUAL ENGLI
ICOM Incorporated HF / VHF Amateur Transceiver IC 703 INSTRUCTION MANUAL ENGLI
Users Manual
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INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i703 FOREWORD IMPORTANT Thank We understand that you have a choice of many different radios in the market place. We want to take a couple of moments of your time to thank you for making the IC-703 your radio of choice, and hope you agree with Icom’s philosophy of “technology first.” Many hours of research and development went into the design of your IC-703. READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the FEATURES ❍ DSP features (AF DSP; UT-106 DSP UNIT required some version) ❍ All mode capability covering 160–6 m ❍ 9.0–15.87 V operation ❍ Compact with detachable front panel ❍ ±0.5 ppm of high frequency stability ❍ Built in antenna tuner ❍ Simple band scope function transceiver. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating instructions for the IC-703. EXPLICIT DEFINITIONS WORD DEFINITION R WARNING Personal injury, fire hazard or electric shock may occur. CAUTION NOTE Equipment damage may occur. If disregarded, inconvenience only. No risk or personal injury, fire or electric shock. PRECAUTION R WARNING RF EXPOSURE! This device emits Radio Frequency (RF) energy. Extreme caution should be observed when operating this device. If you have any questions regarding RF exposure and safety standards please refer to the Federal Communications Commission Office of Engineering and Technology’s report on Evaluating Compliance with FCC Guidelines for Human Radio Frequency Electromagnetic Fields (OET Bulletin 65). R WARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during transmission. This may result in an electrical shock or burn. R NEVER apply AC to the [DC13.8V] receptacle on the transceiver rear panel. This could cause a fire or damage the transceiver. R NEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] receptacle on the transceiver rear panel. This could cause a fire or damage the transceiver. R NEVER let metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. NEVER expose the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). Be aware that temperatures on a vehicle’s dashboard can exceed 80°C (+176°F), resulting in permanent damage to the transceiver if left there for extended periods. AVOID placing the transceiver in excessively dusty environments or in direct sunlight. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. Place unit in a secure place to avoid inadvertent use by children. During mobile operation, DO NOT operate the transceiver without running the vehicle’s engine. When the transceiver’s power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted. Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications. BE CAREFUL! The rear panel will become hot when operating the transceiver continuously for long periods. BE CAREFUL! If a linear amplifier is connected, set the transceiver’s RF output power to less than the linear amplifier’s maximum input level, otherwise, the linear amplifier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin assignments, and connection to the IC-703 may damage the transceiver. Beat signals may be heard on some frequencies. These will occur as a result of circuit construction. For U.S.A. only Caution: Changes or modifications to this transceiver, not expressly approved by Icom Inc., could void your authority to operate this transceiver under FCC regulations. TABLE OF CONTENTS QUICK REFERENCE GUIDE ……………… I–X ■ Installation ………………………………………… I 1. Grounding your Shack ……………………… I 2. Installing your DC Power Supply ………… I 3. Installing lightning protection ……………… II 4. Installing your antenna system …………… II 5. Connect other peripheral equipment …… III ■ Operation ………………………………………… III 1. Voice ………………………………………… III 2. CW…………………………………………… III 3. Other convenient items …………………… IV ■ Your first contact ………………………………… IV D Getting started ………………………………… IV D Just listening …………………………………… V 1. Select the desired band …………………… V 2. Tune to the desired frequency …………… V 3. Adjust audio output ………………………… V D What are you hearing? ……………………… VI 1. Verify mode ………………………………… VI 2. Reducing interference (Some functions may require an optioanl unit depending on version) … VI ■ Ready to call CQ? ……………………………… IX 1. Setting up your Mic Gain ………………… IX 2. Speech compressor………………………… X 1 PANEL DESCRIPTION ………………… 1–10 Quick Reference FOREWORD …………………………………………… i IMPORTANT ……………………………………………i EXPLICIT DEFINITIONS ……………………………… i PRECAUTION …………………………………………i TABLE OF CONTENTS ……………………………… ii ■ Front panel ………………………………………… 1 ■ Multi-function switches …………………………… 4 D M1 functions …………………………………… 4 D M2 functions …………………………………… 4 D M3 functions …………………………………… 4 D M4 functions …………………………………… 5 D S1 functions …………………………………… 6 D S2 functions …………………………………… 6 D S3 functions …………………………………… 6 D S4 functions (UT-106 is required for some version) ……… 6 ■ Rear panel ………………………………………… 7 D DATA socket …………………………………… 8 D ACC socket……………………………………… 8 ■ Function display…………………………………… 9 ■ Microphone (HM-103) ………………………… 10 2 INSTALLATION AND CONNECTIONS … 11–16 ■ Unpacking………………………………………… 11 ■ Selecting a location……………………………… 11 ■ Grounding………………………………………… 11 ■ Antenna connection……………………………… 11 ■ Installation ……………………………………… 12 D Single body mounting ………………………… 12 D Stand …………………………………………… 12 D Front panel separation ……………………… 12 D Front panel mounting ………………………… 12 ■ Required connections…………………………… 13 ■ Advanced connections ………………………… 14 ■ DC Power voltage ……………………………… 15 ■ DC Power supply connections ………………… 15 ■ Battery connections …………………………… 15 ■ External antenna tuners and linear amplifier … 16 10 11 SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. q Hand microphone (HM-103) .............................. 1 w DC power cable (OPC-1229) ............................. 1 e Spare fuse (FGB 4 A) ........................................ 3 r ACC cable ...........................................................1 t 3.5 (d) mm plug ...................................................1 y 6.5 (d) mm Electronic keyer plug.........................1 u Microphone hanger..............................................1 12 13 14 15 16 17 18 Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. 19 ii TABLE OF CONTENTS 3 BASIC OPERATION ……………………17–26 5 FUNCTION FOR RECEIVE …………… 46–50 ■ When first applying power (CPU resetting)…… 17 D M1 display selection ………………………… 17 ■ Initial settings …………………………………… 17 ■ VFO description ………………………………… 18 D The differences between VFO and memory mode ………………………………… 18 ■ Frequency setting ……………………………… 19 ■ Operating mode selection ……………………… 23 ■ Volume setting …………………………………… 23 ■ Squelch and receive (RF) sensitivity ………… 24 ■ Dial lock function ………………………………… 25 ■ Basic transmit operation ……………………… 25 D Transmitting …………………………………… 25 D Maximum output power ……………………… 25 D Setting output power ………………………… 26 D Setting microphone gain……………………… 26 ■ Simple band scope ……………………………… 46 ■ Preamp and attenuator ………………………… 46 ■ RIT function ……………………………………… 47 ■ IF shift function ………………………………… 47 ■ Noise blanker …………………………………… 48 D Noise blanker level set mode ……………… 48 ■ AGC time constant ……………………………… 48 ■ Optional filter selection ………………………… 49 ■ Peak meter hold ………………………………… 50 ■ DSP Functions (may require an optional unit depending on version) ………………………… 50 D ANF (Automatic Notch Filter) function ……… 50 D NR (Noise Reduction) function ……………… 50 4 RECEIVE AND TRANSMIT …………… 27–45 ■ Operating SSB…………………………………… 27 D Convenient functions for receive …………… 27 D Convenient functions for transmit …………… 27 ■ Operating CW …………………………………… 28 D Connections for CW ………………………… 28 D CW operation ………………………………… 29 D Convenient functions for receive …………… 30 D Convenient functions for transmit …………… 30 D CW reverse mode …………………………… 30 D CW pitch control ……………………………… 31 D Electronic CW keyer ………………………… 31 D CW side tone function………………………… 32 D Keyer set mode ……………………………… 32 ■ Memory keyer functions………………………… 33 D Memory keyer send menu …………………… 34 D Editing a memory keyer ……………………… 35 D Contest number set mode …………………… 36 D Memory keyer set mode……………………… 37 ■ Operating RTTY ………………………………… 38 D Connections for RTTY (FSK)………………… 38 D RTTY (FSK) operation ……………………… 38 D Convenient functions for receive …………… 39 D RTTY reverse mode ………………………… 39 D Presetting for RTTY ………………………… 40 D RTTY tone set mode ………………………… 40 ■ Operating AM …………………………………… 41 D Convenient functions for receive …………… 41 D Convenient functions for transmit …………… 41 ■ Operating FM …………………………………… 42 D Convenient functions for receive …………… 42 D Convenient functions for transmit …………… 42 D Tone squelch operation ……………………… 43 D Tone scan operation ………………………… 43 D FM tone set mode …………………………… 44 ■ Repeater operation ……………………………… 45 iii 6 FUNCTION FOR TRANSMIT …………… 51–55 ■ Split frequency operation ……………………… 51 D Quick split function …………………………… 52 ■ Meter selection ………………………………… 52 ■ VOX operation …………………………………… 53 D VOX set mode ………………………………… 53 ■ Speech compressor …………………………… 54 D Compression level set mode ………………… 54 ■ SWR………………………………………………… 55 D Measuring SWR ……………………………… 55 7 MEMORY OPERATION ………………… 56–60 ■ Memory channels ……………………………… 56 ■ Memory channel selection……………………… 56 ■ Memory programming ………………………… 57 ■ Memory clearing ………………………………… 58 ■ Frequency transferring ………………………… 58 ■ Memory names ………………………………… 59 ■ Memo pads ……………………………………… 60 8 SCAN OPERATION …………………… 61–63 ■ Scan types ……………………………………… 61 ■ Preparation ……………………………………… 61 ■ Programmed scan operation…………………… 62 ■ Memory scan operation ………………………… 62 ■ Select memory scan operation ………………… 63 ■ Priority watch …………………………………… 63 9 ANTENNA TUNER OPERATION……… 64–66 ■ Antenna tuner operation ……………………… 64 D Internal antenna tuner………………………… 64 D Tuner operation ……………………………… 64 D Optional external tuner operation …………… 65 D Optional AT-180 AUTOMATIC ANTENNA TUNER operation ……… 65 D Optional AH-4 AUTOMATIC ANTENNA TUNER operation ……… 66 10 DATA COMMUNICATION …………… 67–70 ■ Connections for packet ………………………… 67 D When connecting to [DATA] socket ………… 67 D When connecting to [ACC] socket ………… 67 D When connecting to [MIC] connector ……… 67 ■ Packet (AFSK) operation ……………………… 68 D Frequency indication during AFSK operation … 68 D SSB-D mode selection ……………………… 69 D Carrier point setting…………………………… 69 D Adjusting the transmit signal from the TNC… 70 11 CONTROL COMMAND ……………… 71–73 ■ Remote jack (CI-V) information ……………… 71 D CI-V connection example ……………………… 71 D Data format ……………………………………… 71 D Command table ……………………………… 72 D Band stacking register ……………………… 73 D Codes for memory keyer contents ………… 73 D Codes for memory name contents ………… 73 12 SET MODE …………………………… 74–82 ■ General …………………………………………… 74 D Quick set mode operation …………………… 74 D Initial set mode operation …………………… 74 ■ Quick set mode items…………………………… 75 ■ Initial set mode items …………………………… 76 1 Maximum output power setting ………… 76 2 Power save setting ……………………… 76 3 Simple mode setting ……………………… 76 4 Mode availability ………………………… 76 5 Output power setting for mode ………… 76 6 Confirmation beeps ……………………… 77 7 Band edges beeps ……………………… 77 8 Beep level adjustment …………………… 77 9 Beep audio level limit …………………… 77 10 CW carrier point setting ………………… 77 11 CW side tone level ……………………… 77 12 CW side tone level limit ………………… 77 13 SSB/CW frequency shift setting ………… 78 14 Display backlighting ……………………… 78 15 Key/switch backlighting ………………… 78 16 Light timer setting ………………………… 78 17 LED brightness …………………………… 78 18 Automatic power OFF …………………… 78 19 Current intercept point …………………… 79 20 RF gain/squelch control ………………… 79 21 Sub dial setting …………………………… 79 22 Optional filter selection…………………… 79 23 Peak meter hold setting ………………… 79 24 Quick split function ……………………… 79 25 Split lock function ………………………… 80 26 Split offset frequency …………………… 80 27 Scan resume condition…………………… 80 28 Scanning speed…………………………… 80 29 [UP]/[DN] speed ………………………… 80 30 Noise blanker in AM mode ……………… 80 31 Available memo pads …………………… 80 32 Power ON check function ……………… 81 33 Auto tune start function ………………… 81 34 PTT tune function ………………………… 81 35 Tuner switch condition …………………… 81 36 Packet data speed ……………………… 81 37 Voice synthesizer language……………… 82 38 Voice synthesizer speed ………………… 82 39 S-meter level speech …………………… 82 40 CI-V address setting ……………………… 82 41 CI-V data transffer rate…………………… 82 42 CI-V transceive …………………………… 82 43 CI-V operating frequency data length … 82 Quick Reference TABLE OF CONTENTS 13 MAINTENANCE …………………………… 83 ■ Fuse replacement ……………………………… 83 ■ Memory backup ………………………………… 83 ■ Cleaning ………………………………………… 83 14 TROUBLESHOOTING………………… 84–85 15 OPTIONAL UNIT INSTALLATIONS AND SETTINGS … 86–89 ■ Opening the transceiver case ………………… 86 ■ UT-102 VOICE SYNTHESIZER UNIT ……………… 86 D Operation ……………………………………… 86 ■ IF filter …………………………………………… 87 ■ UT-106 DSP RECEIVER UNIT …………………… 88 ■ MB-72 CARRYING HANDLE ……………………… 88 ■ AT-180 internal switch description …………… 89 16 SPECIFICATIONS ………………………… 90 ■ General …………………………………………… 90 ■ Transmitter ……………………………………… 90 ■ Receiver ………………………………………… 90 ■ Antenna tuner …………………………………… 90 10 11 17 OPTIONS ……………………………… 91–92 18 MENU GUIDE ………………………… 93–94 12 19 ABOUT CE……………………………… 95–96 13 14 15 16 17 18 19 iv QUICK REFERENCE GUIDE ■ Installation 1. Install a ground system for DC noise suppression and RFI suppression 2. Install your DC power supply 3. Install lightning protection. This will help protect more than your gear. 4. Install and connect an antenna system for the appropriate bands of operation 5. Connect other peripheral equipment. This includes microphones, headsets, TNC, amplifiers and any other equipment necessary to make your shack complete. 1. Grounding your Shack Although your radio will operate by connecting the DC power supply and antenna, it is necessary to have a good ground system in your shack. A ground connection is the electrical contact between the common point of an electrical or electronic system and the earth. A good earth ground is necessary to prevent electrical shock, eliminate problems from RFI and DC noise. With more electronic devices being used today, it is also important to reduce RFI and EMI. Although you may not see interference in your shack, without a grounding system, your neighbours may experience interference. Even though many of these devices are Part 15, where they must accept interference from their surrounding environment, it is best to eliminate as much of the possible interference from your shack. If you do not have a grounding system for your shack, depending on the location of your shack, basement or ground floor, a good ground system can be as simple as a couple of ground rods driven 6 to 8 feet into the soil. When installing your IC-703 to your grounding system, the shortest most direct connection is recommended. NOTE: There are many publications covering proper grounding techniques. Check with your local dealer for more information and recommendations. R WARNING!: NEVER ground station equipment or antennas to house gas lines. NEVER attach ground lines to plastic (pvc) pipe. D Some Symptoms if inadequate grounding a. Poor DC Ground 50/60 Hz hum on the audio either Rx or Tx without the antenna connected. If you feel a tingling sensation when you touch a metal surface. Surfaces such as the cover of your radio or power supply. b. Poor RF Ground While transmitting and you feel a tingling sensation when you touch a metal surface. Surfaces such as the cover of your radio or power supply. While transmitting, you experience interference to other electronic devices, such as the telephone, television or stereo audio systems. 2. Installing your DC Power Supply The DC power supply is a device used to convert 110/220 V AC, also know as Household current, to a steady source of 13.8 V DC. The perfect match to your IC-703 is the PS-125. This plug and play unit plugs into the DC power receptacle using an optional OPC-1248 located on the rear of the radio. Or connect the supplied DC power cable (OPC-1229) to the appropriate color coded terminals, then insert the DC connector into the DC power receptacle located on the rear of the radio. NOTE: Although the power supply current requirement is quite low during receiving, this not the case when you transmit. With many electrical devices in the shack, it is very important to verify the electrical circuit is not overloaded. Transceiver Ground PS-125 to DC A DC power power supply* receptacle AC outlet Black Red _ + *13.8 V; at least 3.0 A continuous DC power cable Optional OPC-1248 Connect to an AC outlet using the supplied AC cable. Supplied OPC-1229 4 A fuses AC cable QUICK REFERENCE GUIDE Although you may not live in an area with high occurrence for lightning storms, it is always wise to take precautions for lightning or static discharges. Proper lightning protection not only offers protection to the ham gear, but the shack and most importantly the operator. Quick Reference 3. Installing lightning protection NOTE: There are many publications covering proper lightning protection, check with your local dealer for more information and recommendations. 4. Installing your antenna system Whether your IC-703 is your first radio or one of many, one of your key elements in a great shack is the antenna system. There is a connection on the back of your IC-703, for HF and 6 m. If you are using one antenna for HF and 6 m, for simplicity, connect the antenna coax to ANT. PL-259 CONNECTOR INSTALLATION EXAMPLE 30 mm Coupling ring ANTENNA Connect a HF/50MHz antenna Impedance: 50Ω 10 mm (soft solder) 10 mm Soft solder 1–2 mm Slide the coupling ring down. Strip the cable jacket and soft solder. Strip the cable as shown at left. Soft solder the center conductor. solder solder Slide the connector body on and solder it. Screw the coupling ring onto the connector body. 30 mm ≈ 9⁄8 in 10 mm ≈ 3⁄8 in 1–2 mm ≈ 1⁄16 in R WARNING: Although a mag mount antenna works great on a vehicle, DO NOT use the IC-703 with this type of antenna. Your IC-703 is equipped with an internal antenna tuner (ATU) for operation on 160–6 m. This ATU is designed to work with an unbalanced 50 Ω feedline. The purpose of the internal antenna tuner is to match the impedance of your antenna system to as close to a 50 Ω load as possible. This ATU will not operate with a long wire or ladder line (450 Ω or other balanced feedlines). An external ATU such as the AH-4 would be necessary for this kind of operation. CAUTION: Although your IC-703 has protection to drop down power with a high SWR, this does not completely protect the transceiver from transmission without an antenna. Make sure you have an antenna connected whenever you transmit with your radio. NOTE: There are many publications covering proper antennas and their installation, check with your local dealer for more information and recommendations. Antenna SWR Each antenna is tuned for a specified frequency range and SWR may be increased out-of-range. When the SWR is higher than approx. 2.0:1, the transceiver’s power drops to protect the final transistors. 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. II QUICK REFERENCE GUIDE 5. Connect other peripheral equipment Everyone has his or her favorite ad-on gear; now is the time to connect this gear! We will cover the basic devices that can be connected to your IC-703. If you do not see the particular item you are wanting to connect, refer to the Advance Connections section starting on page 14. ■ Operation 1. Voice Microphones: Connect the microphone to the modular-type connector bottom of the front panel or back of the radio. Front panel MICROPHONES Rear panel HM-103 SM-20 OPC-589 2. CW CW Key: There are several types of keys or keyers that can be used with your IC-703. a. Iambic Key paddle: Use a 6.35(d) mm (1⁄4″) stereo plug and connect to the [KEY] jack located on the rear of the radio. b. Straight Key: Use a 6.35(d) mm (1⁄4″) mono plug and connect key to the back of the radio. c. External Keyer: Use a 6.35(d) mm (1⁄4″) mono plug and connect to the back of the radio. d. Computer Keying: Use a 6.35(d) mm (1⁄4″) mono plug and connect to the back of the radio. Rear panel Rear panel CW KEY When connecting a paddle (dot) (com) (dash) CW KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode. (p. 32) When connecting a straight key or else (+) (_) NOTE: You will need to select the type of keyer you are using in the keyer set mode. There are many advanced CW functions in this set mode. Until you have a full understanding of these functions change only the items necessary. III 3. Other convenient items Headphones: A 3.5(d) mm (1⁄4″) mono jack for operation without using the internal or external speakers. Perfect for operation without disturbing others in the room. External Speaker: A 3.5(d) mm (1⁄8″) mono jack for operation with an external speaker. (Input impedance: 8 Ω/Max. input power: 5 W) Rear panel SPEAKER Front panel Quick Reference QUICK REFERENCE GUIDE or HEADPHONES PHONES ∫ SPEAKER √ Select ‘PHONES’ with the [PHONES/SPEAKER] switch on the back of the front panel. Front panel SPEAKER PHONES ∫ SPEAKER √ Select ‘SPEAKER’ with the [PHONES/SPEAKER] switch on the back of the front panel. ■ 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 “On The Air” an enjoyable experience. D Getting started 1. Before powering up your radio, you may want to make sure the following controls are set in the following positions: 2. Resetting the CPU: Although you have purchased a brand new radio, some settings may be changed from the factory defaults during the QC process. So your radio can start from Factory Defaults resetting the CPU is necessary. (Refer to p.17) [POWER] [Y] • [AF] • [RF/SQL] • [SHIFT] : Commonly referred to as the volume: fully counter clockwise. : The control for the RF Gain and Squelch circuits: 12 o’clock. : Shifts the IF center frequency: 12 o’clock [Z] IV QUICK REFERENCE GUIDE D Just listening 1. Select the desired band On your IC-703, an easy way of changing bands is by using the [(Y)BAND] or [(Z)BAND] located just right corner on the front panel. [Y] [Z] Push [(Y)BAND] or [(Z)BAND] to select the desired band. • Pushing [(Y)BAND] or [(Z)BAND] continuously scrolls through the available bands. • Say you want to go to 20 meters or 14 MHz; you would push [(Y)BAND] or [(Z)BAND] several times to select it. This will change the displayed operating frequency to the 20-meter band. NOTE: The band stacking register can also be used to select bands. (Refer to p. 22) 2. Tune to the desired frequency Directly left of the [(Y)BAND]/[(Z)BAND] is the main dial. This will allow you to dial in the frequency you want to operate. You will notice the tuning speed [TS] is 10 Hz resolution. Page 20 will instruct you on how to set the tuning speed [TS] for 1 Hz resolution. 3. Adjust audio output Adjust this control to a comfortable audio level. AF RF/SQL Decreases Increases No audio output Max. audio output D What are you hearing? Stop and focus on what you are hearing. Do you hear a lot of noise? Is the signal intelligible? Are you set up for the right mode? How about the filters? 1. Verify mode Although your IC-703 will automatically select USB or LSB in the HF bands, it will not select any of the other modes. You will need to select the proper mode whether CW, RTTY, AM or FM. MODE Hint! The Band Stacking Register will memorize the last frequency used in the band, as well as the Mode, Filter, Tuner and AGC settings. This makes band hoping much easier. Quick Reference QUICK REFERENCE GUIDE 2. Reducing interference (some functions may require an optional unit depending on version) Your IC-703 has many features to reduce QRM and QRN from the desired signal. a. Noise Reduction: The noise reduction system on your IC-703 is part of the DSP. This is used to reduce the hiss and QRM levels. b. Adjusting the Noise Reduction: The noise reduction is completely variable on how much of the DSP Noise Reduction is used. q Select S4 (DSP menu). q Push [(F-3)NRL] to indicate the noise reduction level. w Rotate the [M-CH] control to set the noise reduction level. e Push [(F-3)NRL] to exit the noise reduction level set mode. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. w Push [(F-2)NR] to activate the noise reduction func- tion. • “DSP” and “NR” appear when the function is ON. [MENU] [(F-2)] [DISPLAY] [M-CH] [(F-3)] USB USB Appear DSP DSP NR NR BLANK BLANK S1 PO 20 40 60dB 10 S4 ANF NR Noise reduction ON Noise reduction OFF VFO A S1 CH NRL PO 20 40 60dB 10 VFO A CH S4 LEVEL 4 NRL Hint! How far you advance the NR control will determine how much the noise can be effectively reduced. Adjusting the noise reduction level too high may cause some distortion to occur on the received signal. The noise reduction level should only be set as high as is necessary. Use this setting, along with RF gain, NB (noise blanker, if needed), and IF filters as well, to minimize the effects of noise on the target signal. VI QUICK REFERENCE GUIDE c. Automatic Notch: The automatic notch will track up to heterodynes. This is helpful for eliminating annoying transmitter “tune up” tones on any band, and to minimize continuous tone “heterodynes” encountered on the 40 meter phone bands at night, for example. Once selected an icon will appear “ANF” on the display. [(F-1)] [MENU] q Select S4. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. w Push [(F-1)ANF] to activate the automatic notch filter. USB Appear DSP ANF BLANK S1 PO NOTE: Your IC-703 is equipped with an AGC circuit. This allows the DSP to filter out interfering signals and QRM, while also taking this interference out of the AGC. Bottom line, this will either eliminate or greatly reduce the pumping of the AGC from the interfering signal. d. Noise Blanker: The noise blanker function reduces pulse-type noise such as that generated by automobile ignition systems. This function is not effective for FM modes or for non pulse-type noise. q Select M3. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. w Push [(F-2)NB] to activate the noise blanker. [DISPLAY] 20 40 60dB VFO A 10 S4 ANF NR CH NRL Hint! The Automatic Notch will not operate in the CW, RTTY or SSB-D modes. e. Adjusting the Noise Blanker: The noise blanker is completely variable on how much of the Noise Blanker is used. q Push [(F-2)NB] for 1 sec. to enter the noise blanker level set mode. w Rotate the main dial to set the noise blanker level. e Push [DISPLAY] to exit the noise blanker level set mode. • “NB” appears when the function is ON. [(F-2)] [MENU] [(F-2)] [DISPLAY] [DISPLAY] Main dial USB USB Appears NB S1 PO BLANK 20 40 60dB 10 M3 FIL NB VFO A CH MET N1 NB LEVEL Hint! When using the noise blanker, received signals may be distorted if the noise blanker level setting has been too high. VII 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 operation when no interfering signals are present. Narrow filters for AM/FM modes are standard. FILTER PRESETTING: After you install a filter (see p. 87 for installation), you must specify the installed filter in initial set mode (item “22 OPT. FIL” ; see p. 79). [(F-1)] [MENU] [DISPLAY] USB BLANK S1 PO 20 40 60dB 10 M3 FIL NB FILTER ON/OFF: q Select M3. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. w Push [(F-1)FIL] momentarily to select the narrow Quick Reference QUICK REFERENCE GUIDE VFO A CH MET Either these appears when selected filter; push for 1 sec. to select the wide filter. • ã appears when the narrow filter is selected; ç appears when the wide filter is selected. NOTE: When selecting the narrow filter (or wide filter), the graphic passband is changed (see diagram below). wide is selected Normal operation narrow is selected We hope these pointers have been helpful. Now you are ready for the “Ready to call CQ?”. VIII QUICK REFERENCE GUIDE ■ Ready to call CQ? [POWER]: OFF [P.AMP/ATT]: OFF (indicator lights out) [AF]: Max. CCW AF RF SQL MODE CCW : counterclockwise BAND POWER TS [RF/SQL]: Center P.AMP ATT RX [TUNER]: OFF (indicator lights out) TUNER TX RIT SUB M-CH SHIFT DISPLAY PHONES LOCK BAND [RIT/SUB]: OFF (indicator lights out) MENU F 1 F 2 F 3 [LOCK]: OFF (indicator light out) [SHIFT]: Center 1. Setting up your Mic Gain Microphone gain must be adjusted properly so that your signal does not distort when transmitted. q Select SSB or another phone mode (AM or FM mode). w Push [DISPLAY] for 1 sec. to select quick set mode. e Push [MENU] one or more times to select “Q2 MIC GAIN.” • The ALC meter is selected automatically when operating in SSB mode. r While speaking into the microphone, rotate the main dial to adjust the microphone gain so that the ALC meter does not peak past the ALC zone. • While transmitting at your normal voice level, the ALC meter should read at about the middle of the ALC zone. • Be sure the mic gain is in the range of 2 to 5. t Push [DISPLAY] to exit quick set mode. [DISPLAY] Main dial [MENU] USB S1 20 40 60dB ALC Q2 MIC GAIN ALC ALC zone IX 2. Speech compressor The IC-703 has a built-in, low distortion speech compressor 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. q Select USB or LSB mode. w Select the ALC meter. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3, then push [(F-3)MET] one or more times to select “ALC.” [(F-3)] [MENU] [(F-2)] [DISPLAY] Main dial e Select M4. Quick Reference QUICK REFERENCE GUIDE USB • Push [MENU] one more time to select M4. r Push [(F-2)COM] to turn the speech compressor function ON. • “COM” appears. t Push [(F-2)COM] for 1 sec. to enter the compression level set mode (p. 54). y Rotate the main dial to set the speech compression level. NOTE: When the ALC meter peaks at light the ALC zone, your transmitted voice may be distorted. S1 20 40 60dB ALC C1 COMP LEVEL ALC ALC zone Hint! Voice patterns and audio characteristics vary with each operator, therefore the Microphone gain, speech compression settings will be different for each operator. Actual on air experimenting is necessary to get just the right sound. It’s best to test and adjust your audio on the air, while someone who knows what your real voice sounds like listens, and provides and opinion on your audio quality. Verify you have selected a clear frequency and call out your CQ! 1 PANEL DESCRIPTION ■ Front panel w e AF y u RF SQL MODE POWER BAND USB TS P.AMP ATT @2 @1 @0 RX TUNER S1 RIT SUB M-CH SHIFT PHONES 20 40 60dB PO VFO A TX CH 10 M1 SPL A/B XFC !0 DISPLAY LOCK !9 BAND MENU !8 !7 !6 F 1 !5 F 2 F 3 !4 !3 !2 !1 q POWER SWITCH [POWER] (p. 17) ➥ While transceiver’s power is OFF: Push to turn power ON. • Turn the DC power supply ON in advance. ➥ While transceiver’s power is ON: ❍ Push momentarily to indicate the connected power supply voltage. ❍ Push for 1 sec. to turn power OFF. w AF GAIN CONTROL [AF] (inner control; p. 17) Varies the audio output level from the speaker. AF Increases No audio output Max. audio output e RF GAIN CONTROL/SQUELCH CONTROL [RF/SQL] (outer control; p. 24) Adjusts the RF gain and squelch threshold level. The squelch removes noise output from the speaker (closed condition) when no signal is received. • The squelch is particularly effective for FM. It is also available for other modes. • 12 to 13 o’clock position is recommended for any setting of the [RF/SQL] control. • The control can be set as ‘Auto’ (RF gain control in SSB, CW and RTTY; squelch control in AM and FM) or squelch control (RF gain is fixed at maximum) in initial set mode as follows. (p. 79) SSB, CW RTTY AM, FM AUTO Noise squelch (FM mode) Recommended level Squelch is open. Maximum RF gain RF gain adjustable range S-meter squelch RF/SQL Decreases MODE • When setting as RF gain/squelch control • When functioning as RF gain control (Squelch is fixed open; SSB, CW, RTTY only) Maximum RF gain Adjustable range Minimum RF gain • When functioning as squelch control (RF gain is fixed at maximum.) Noise squelch threshold (FM mode) Noise squelch (FM mode) Squelch is open. S-meter squelch threshold S-meter squelch SET MODE SETTING SQL RF GAIN + SQL RF GAIN SQL RF GAIN + SQL SQL SQL RF GAIN + SQL Shallow Deep PANEL DESCRIPTION r FUNCTION DISPLAY Shows the operating frequency, dot matrix indications, selected memory channel, etc. See p. 9 for details. t TUNING STEP SWITCH [TS] (pgs. 19–21) ➥ While in SSB/CW/RTTY modes, push momentarily to turn the programmable tuning step ON and OFF. While in FM/AM mode push momentarily to toggle the programmable tuning step and 1 MHz quick tuning step. • While the programmable tuning step indicator is displayed, the frequency can be changed in programmed kHz steps. Programmable tuning step indicator USB • 0.01 (FM/AM mode only), 0.1, 1, 5, 9, 10, 12.5, 20, 25 and 100 kHz tuning steps are available. • 1 MHz quick tuning step are only available in FM and AM modes. ➥ While the programmable tuning step is OFF, turns the 1 Hz step ON and OFF when pushed for 1 sec. • 1 and 10 Hz steps are only available in SSB, CW and RTTY modes. • 1 Hz indication appears, and the frequency can be changed in 1 Hz steps. ➥ While the programmable tuning step is ON, enters the tuning step selection mode when pushed for 1 sec. y MODE SWITCH [MODE] (p. 23) ➥ Push momentarily to cycle through the operating modes: USB/LSB ➧ CW ➧ RTTY/SSB-D ➧ FM/AM ➥ Push for 1 sec. to toggle the following operating modes: USB ↔ LSB CW ↔ Memory keyer mode RTTY↔ SSB-D (SSB data mode) FM ↔ AM u RECEIVE/TRANSMIT INDICATORS [RX]/[TX] ➥[RX]: Lights green while receiving a signal and when squelch is open. ➥[TX]: Lights red while transmitting. i MAIN DIAL Changes the displayed frequency, sets the values of selected initial set mode items, etc. o UP/DOWN (BAND) SWITCHES [Y/Z(BAND)] ➥ Push momentarily to select a band. • Can also be used to advance or back the quick set mode items, initial set mode items, etc. ➥ Push and hold to scroll through the bands continuously. !0 MAIN DIAL TENSION LATCH Selects the main dial tension. • 2 positions are available. !1 MICROPHONE CONNECTOR (p. 10) Modular-type microphone connector—Accepts the supplied microphone (HM-103). • The optional OPC-589 can be used to connect an 8-pin microphone such as the SM-8 or SM-20, if desired. • A microphone connector is also available on the rear panel. DO NOT connect 2 microphones simultaneously. !2 LOCK SWITCH [LOCK] ➥ Push momentarily to toggle the dial lock function ON and OFF. • The dial lock function electronically locks the main dial. ➥ When the optional UT-102 VOICE SYNTHESIZER UNIT is installed (p. 86), push for 1 sec. to have the frequency, etc. announced. • UT-102 operation can be adjusted in the initial set mode (p. 82). LOCK Lights while the lock function is activated. !3 DISPLAY SWITCH [DISPLAY] (p. 94) ➥ Push momentarily to select one of the three menu sets: M1 to M4, S1 to S4 and G1 to G4. ➥ Push for 1 sec. to enter the quick set mode. !4 MULTI-FUNCTION SWITCHES [F1] / [F2] / [F3] ➥Push to select the function indicated in the dot matrix display above these switches. (pgs. 4–6, 94) • Functions vary depending on the menu set selected. ➥Push to edit a character for memory keyer programming or memory name. (pgs. 35, 59) !5 MENU SWITCH [MENU] (p. 94) ➥ Push this switch one or more times to select menus within a menu set (M, S or G), or push to advance through the quick set mode and initial set mode displays. ➥ Push for 1 sec. to jump between two different function menu sets. 1 PANEL DESCRIPTION !6 RIT/SUB DIAL SWITCH [RIT/SUB] (pgs. 21, 47) ➥ Push to toggle the RIT or SUB DIAL function ON and OFF—initial set mode is used to select the desired action*. • Lights green when the SUB DIAL function is ON; lights red when the RIT function is ON. • Use the [M-CH] control to vary the RIT frequency or SUB DIAL frequency (see below). ➥ When the RIT function is ON, push for 1 sec. to add or subtract the shifted frequency to the operating frequency. !9 HEADPHONE JACK [PHONES] (p. 14) Accepts headphones with 8–16 Ω impedance. • When headphones are connected, no receive audio comes from the speaker. • When the PHONES/SPEAKER switch on the back of the front panel is set to the [SPEAKER] position, an external speaker can be connected. This is convenient for mobile or outdoor operation. Back of the front panel PHONES ∫ SPEAKER √ RIT/ SUB SPEAKER √ Lights red while the RIT function is activated; green while the SUB DIAL function is activated. *Even if RIT is selected in initial set mode, RIT cannot be selected when operating AM or FM modes. ✔ What is the RIT function? The RIT (Receiver Incremental Tuning) shifts the receive frequency without shifting the transmit frequency. This is useful for fine tuning stations calling you on an off-frequency or when you prefer to listen to slightly differentsounding voice characteristics, etc. !7 SHIFT CONTROL [SHIFT] (outer control; p. 47) Shifts the center frequency of the receiver’s IF passband. • Rotate the control clockwise to shift the center frequency higher, or rotate the control counterclockwise to shift the center frequency lower. • When rotate the control, the IF passband is graphically displayed and changes in accordance with the [SHIFT] control. M-CH SHIFT M-CH SHIFT M-CH SHIFT PHONES ∫ @0 TUNER SWITCH [TUNER] (pgs. 64–66) ➥ Push momentarily to toggle the automatic antenna tuner function ON and OFF (bypass). • Lights red when the automatic antenna function is ON. ➥ Push this switch for 1 sec. to manually tune the antenna. • When the tuner cannot tune the antenna, the tuning circuit is bypassed automatically after 20 sec. TUNER Lights while the automatic tuning function is activated. @1 FRONT PANEL LATCH (p. 12) Pull away from the transceiver (towards yourself when looking at the front of the transceiver) to detach the front panel from the main body of the transceiver. @2 PRE AMP/ATTENUATOR SWITCH [P.AMP/ATT] (p. 46) ➥ Push momentarily to turn the preamp ON or OFF. ➥ Push for 1 sec. to turn the 20 dB attenuator ON; push momentarily to turn the attenuator OFF. • Lights green when the preamp is ON; lights red when the 20 dB attenuator is ON. Shifts low Center Shifts high !8 M-CH CONTROL [M-CH] (inner control) ➥ When the RIT or SUB DIAL functions are OFF, rotate to select a memory channel number (p. 56). ➥ Shifts the receive frequency while the RIT function is ON in SSB, CW and RTTY modes (see above or p. 47). P.AMP/ATT Lights green while the preamp is activated; lights red while the attenuator is activated. ✔ What is the preamp? The preamp amplifies received signals in the front end circuit to improve the S/N ratio and sensitivity. Turn ON ‘P.AMP’ when receiving weak signals. • RIT variable range is ± 9.99 kHz ➥ Changes the operating frequency in the selected tuning steps while the SUB DIAL function is ON (p. 21). M-CH Decreases SHIFT Increases ✔ What is the attenuator? The attenuator prevents a desired signal from distorting when very strong signals are near the desired frequency, or when very strong electric fields, such as from a broadcasting station, are near your location. PANEL DESCRIPTION ■ Multi-function switches D M1 functions D M2 functions M1 SPL A/B XFC M2 MW MCL V/M MENU F-1 F-2 F-3 MENU F-1 F-2 F-3 SPLIT OPERATION (p. 30) ➥ Push momentarily to toggle the split funcSPL tion ON and OFF. (p. 51) F-1 • “ä”appears when the split function is ON. ➥ Push for 1 sec. to turn the quick split function ON. (p. 52) • The offset frequency must be programmed in advance using initial set mode. (p. 80) • The offset frequency is shifted from the displayed frequency. • The quick split function can be turned OFF using initial set mode. (p. 79) VFO A/B SELECTION momentarily to toggle VFO A and A/B ➥ Push VFO B in VFO mode. (p. 18) F-2 ➥ Push momentarily to toggle the transmission VFO and reception VFO during split operation. (p. 51) ➥ Push momentarily to toggle the transmit and receive frequencies (and modes) of memory channels when the split function is turned ON. ➥ Push for 1 sec. to equalize the frequency and operating mode of the two VFO’s. • The rear (undisplayed) frequency and operating mode are equalized to the front (displayed) VFO frequency and operating mode. MEMORY WRITE (p. 57) for 1 sec. to store the selected readMW Push out frequency and operating mode into F-1 the displayed memory channel. F-2 • “}” appears. • This switch does not function in VFO mode. VFO/MEMORY momentarily to toggle between VFO V/M ➥ Push and memory modes. (p. 56) F-3 ➥ Push for 1 sec. to transfer the frequency and operating mode in the selected memory channel to a VFO. (p. 58) D M3 functions M3 FIL NB MET MENU F-1 F-2 F-3 FILTER SELECTION (p. 49) to toggle the narrow filter (or wide FIL Push filter—push for 1 sec.) ON and OFF. F-1 TRANSMIT FREQUENCY CHECK (p. 51) the transmit frequency when XFC Monitors pushed and held. F-3 MEMORY CLEAR (p. 58) for 1 sec. to clear the selected readMCL Push out memory channel contents. • While pushing this switch, the transmit frequency can be changed with the main dial. • “ã”appears when the narrow filter is ON; “ç” appears when the wide filter is ON. • An optional filter installation and presetting in initial set mode (p. 79) is necessary to use the following: CW/RTTY narrow: FL-52A or FL-53A SSB narrow: FL-222 SSB wide: FL-257 NOISE BLANKER (p. 48) momentarily to toggle the noise NB ➥ Push blanker ON and OFF. F-2 • “NB” appears when the noise blanker function is ON. • The noise blanker does not function in FM mode; “30 AM NB” item (p. 80) in initial set mode must be set to ON for the noise blanker to work in AM mode. ➥ Push for 1 sec. to enter the noise blanker level set mode. • The noise blanker level can be set in noise blanker level set mode (p. 46). 1 PANEL DESCRIPTION METER SELECTION (p. 52) the type of meter displayed (durMET Selects ing transmit) in the function display. F-3 • Power, ALC or SWR metering can be selected. • Only an S-meter is available for receive. SPEECH COMPRESSOR (p. 54) ➥ Push momentarily to toggle the speech COM compressor ON and OFF. F-2 • “COM” appears when the speech compressor is ON. ➥ Push for 1 sec. to enter the compression level set mode. • The COMP gain can be set in compression level set mode. D M4 functions DURING SSB/AM OPERATION: AGC (p. 48) M4 VOX COM AGC MENU F-1 F-2 F-3 DURING CW OPERATION: M4 1/4 KEY AGC MENU F-1 F-2 F-3 AGC F-3 1/4 TON AGC MENU F-1 F-2 F-3 F-1 DURING SSB-D OPERATION: M4 1/4 F-1 AGC F-2 F-3 DURING FM OPERATION: M4 VOX TON MENU F-1 F-2 F-3 F-1 • “VOX” appears when the VOX function is ON. ➥ Push for 1 sec. to enter the VOX set mode. • The VOX delay, VOX gain and ANTI-VOX can be set in VOX set mode. ✔ What is the VOX function? The VOX function (voice operated transmission) starts transmission without pushing the PTT switch when you speak into the microphone; then, automatically returns to receive when you stop speaking. • The break-in setting, break-in delay time, CW pitch, CW paddle type and dot/dash ratio can be set in the keyer set mode. ✔ What is the break-in function? Full break-in (QSK) activates the receiver between transmitted dots and dashes. This is useful when operating in nets, or during DX pileups and during contests, when “fast exchanges” are common. RTTY TONE SET MODE (p. 40) for 1 sec. to enter the RTTY tone set TON ➥ Push mode. F-2 VOX FUNCTION (p. 53) ➥ Push momentarily to toggle the VOX funcVOX tion ON and OFF. • When the 1⁄4 function is ON, a bar appears under the 1⁄4 indication and fine tuning can be used. KEYER SET MODE (p. 32) for 1 sec. to enter the keyer set KEY Push mode. F-2 MENU • “FAGC” appears when the fast time constant is selected. 1/4 FUNCTION to toggle the 1/4 tuning function ON 1/4 Push and OFF. DURING RTTY OPERATION: M4 Push to change the time constant of the AGC circuit. • The RTTY tone frequency, RTTY shift frequency and RTTY keying polarity can be set in RTTY tone set mode. FM TONE OPERATION ➥ Push momentarily to select the subaudiTON ble tone encoder for repeater use, tone F-2 squelch function and OFF. (pgs. 43–45) • “T” appears when the repeater tone function is ON. (pgs. 43, 45) • “TSQL” appears when the tone squelch function is ON. (p. 43) ➥ Push for 1 sec. to enter the FM tone set mode. (p. 44) • The repeater tone frequency, tone squelch frequency can be set in FM tone set mode. PANEL DESCRIPTION D S1 functions S1 MENU MW F-1 D S3 functions MPW F-2 MPR S3 F-3 MENU F-1 MEMORY WRITE (p. 57) for 1 sec. to store the selected MW Push readout frequency and operating mode F-1 into the displayed memory channel. MEMO PAD WRITE (p. 60) to store the the selected readout MPW Push frequency and operating mode into a F-2 memo pad. MEMO PAD READ (p. 60) Push to call up a memo pad. 14 21 F-2 F-3 QUICK BAND CHANGE FUNCTION (p. 22) This item provides access to the band stacking register. By default the 7, 14 and 21 MHz bands are displayed. Push [F-1], [F-2] or [F-3] for 1 sec. to select a new band if desired. • A mode is memorized along with the frequency for each band. D S4 functions (UT-106 is required for some version) MPR F-3 D S2 functions DURING VFO MODE: S2 SCN PRI V/M MENU F-1 F-2 F-3 DURING MEMORY MODE: S2 SCN SEL V/M MENU F-1 F-2 F-3 S4 ANF NR NRL MENU F-1 F-2 F-3 AUTOMATIC NOTCH FILTER (p. 50) function automatically attenuates ANF This beat tones, tuning signals, etc., even if F-1 they are moving. NOISE REDUCTION (p. 50) This function reduces noise components NR and picks out desired signals which are F-2 buried in the noise. NOISE REDUCTION LEVEL DISPLAY (p. 50) switch displays the noise reduction NRL This level when pushed. F-3 SCAN (pgs. 61–63) Push to start or stop the scan function. SCN F-1 PRIORITY WATCH (p. 63) Push to start or stop the priority watch. PRI F-2 VFO/MEMORY momentarily to toggle between VFO V/M ➥ Push and memory modes. (p. 56) F-3 ➥ Push for 1 sec. to transfer the frequency and operating mode in the selected memory channel to a VFO. (p. 58) SELECT SCAN (p. 61) to toggle the select setting ON and SEL Push OFF for the selected memory channel. F-2 1 PANEL DESCRIPTION ■ Rear panel t y !0 q ANTENNA CONNECTOR [ANT] (p. 13) Accepts a 50 Ω antenna with a PL-259 connector. w GROUND TERMINAL [GND] (p. 11) Connect this terminal to a ground to prevent electrical shocks, TVI, BCI and other problems. e DATA SOCKET [DATA] (pgs. 8, 14) 6-pin min DIN socket to connect a TNC (Terminal Node Controller), etc. for packet operation. • See page at right for socket information. r ACCESSORY SOCKET [ACC] (pgs. 8, 14) Enables connection to external equipment such as a TNC for data communications, a linear amplifier or an automatic antenna selector/tuner, etc. • See page at right for socket information. t EXTERNAL SPEAKER JACK [EXT SP] (p. 14) Accepts a 4–8 Ω speaker. y CI-V REMOTE CONTROL JACK [REMOTE] (p. 71) ➥ Designed for use with a personal computer for remote control of the transceiver functions. ➥ Used for transceiver operation with another Icom CI-V transceiver or receiver. i ELECTRONIC KEYER JACK [KEY] (p. 28) Accepts a paddle to activate the internal electronic keyer. • Selection between the internal electronic keyer and straight key operation can be made in keyer set mode. (p. 32) (⊕) When connecting a straight key When connecting a paddle (dot) (com) (dash) If you use an external electronic keyer, make sure the voltage retained by the keyer is less than 0.4 V when the key is ON. o TUNER CONTROL SOCKET [TUNER] (p. 14) Accepts the control cable from an optional AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER. !0 DC POWER SOCKET [DC13.8V] (p. 15) Accepts 9.0–15.87 V DC through the supplied DC power cable. u MICROPHONE CONNECTOR [MIC] (p. 13) Accepts the supplied microphone (connected in parallel with the front panel’s [MIC] connector). • See p. 2 for microphone notes. • See p. 10 for microphone connector information. NOTE: DO NOT use a cigarette lighter socket as a power source when operating in a vehicle. The plug may cause voltage drops and ignition noise may be superimposed onto transmit or receive audio. PANEL DESCRIPTION D DATA socket DATA PIN No. NAME DATA IN GND Common ground for DATA IN, DATA OUT and AF OUT. PTT P PTT terminal for packet operation. Connect ground to transmit data. DESCRIPTION Input terminal for data transmit. (1200 bps: AFSK/9600 bps: G3RUH, GMSK) DATA OUT Data out terminal for 9600 bps operation only. AF OUT Data out terminal for 1200 bps operation only. Squelch out terminal. Becomes ground level when the transceiver receives a signal which opens the squelch. Rear panel view SQ • To avoid unnecessary TNC transmission, connect squelch to the TNC to inhibit transmission when receiving signals. • Keep audio output at a normal level, otherwise a “SQ” signal will not be output. D ACC socket ACC PIN No. NAME 4 3 2 1 8 7 6 5 12 11 10 9 13 Rear panel view q brown w red e orange r yellow t green y blue u purple i gray o white !0 black !1 pink !2 light blue !3 light green 8V DESCRIPTION SPECIFICATIONS Output voltage Output current Regulated 8 V output. GND Connects to ground. ——— Input/output pin. (HF/50 MHz only) HSEND Goes to ground when transmitting. When grounded, transmits. BDT BAND : 8 V ±0.3 V : Less than 10 mA Ground level Output current Input current (Tx) : –0.5 V to 0.8 V : Less than 20 mA : Less than 200 mA Data line for the optional AT-180. ——— Band voltage output. (Varies with amateur band) Output voltage : 0 to 8.0 V ALC ALC voltage input. Control voltage Input impedance : –4 V to 0 V : More than 10 kΩ NC ——— ——— 13.8 V 13.8 V output when power is ON. Output current TKEY Key line for the optional AT-180. ——— 10 FSKK Controls RTTY keying “High” level “Low” level Output current : More than 2.4 V : Less than 0.6 V : Less than 2 mA 11 MOD Input impedance Input level : 10 kΩ : Approx. 100 mV rms 12 AF 13 SQLS Modulator input. Connects to a modulator. : Max. 1 A AF detector output. Output impedance : 4.7 kΩ Fixed, regardless of [AF] position in Output level : 100–300 mV rms default settings. Squelch output. Goes to ground when squelch opens. SQL open SQL closed : Less than 0.3 V/5 mA : More than 6.0 V/100 µA Color refers to the cable strands of the supplied cable. • When connecting the ACC conversion cable (OPC-599) ACC 1 4 3 2 1 8 7 6 5 12 11 10 9 13 q FSKK w GND e HSEND r MOD t AF y SQLS u 13.8 V i ALC ACC 2 q8V t ALC w GND y VSEND e HSEND u 13.8 V r BAND Connect to ACC socket 1 PANEL DESCRIPTION ■ Function display rb !3 LSB USB CW R RTTY AM FM TSQL SPL DSP ra ANF NR !2 !1 NB VOX F-BK COM F AGC S1 ALC SWR PO 1 1.5 2 20 3 5 40 60dB ∞ 10 BLANK VFO A VFO B MEMO CH M1 SPL A/B XFC !0 q NARROW/WIDE FILTER INDICATORS ➥ “ã” appears when selecting AM narrow or FM narrow modes. ➥ When installing an optional narrow filter, narrow mode can be selected in CW, RTTY and SSB modes. • When the SSB wide filter is installed, “ç” appears during wide mode selection. w MODE INDICATORS Show the selected operating mode. • “å” appears when CW reverse or RTTY reverse mode is selected. e SPLIT INDICATOR Appears during split operation. r PROGRAMMABLE/1 MHz TUNING STEP INDICATORS ➥ ra appears when the programmable tuning step is selected. ➥ rb appears when the 1 MHz quick tuning step is selected. t FREQUENCY READOUT Shows the operating frequency. y BLANK MEMORY INDICATOR Appears when the displayed memory channel is not programmed (blank channel). • This indicator appears both in VFO and memory modes. u VFO/MEMORY INDICATORS ➥VFO A or B appears when VFO mode is selected; MEMO appears when memory mode is selected. i SELECT MEMORY CHANNEL INDICATOR Appears when the selected memory channel is set as a select memory channel. o MEMORY CHANNEL READOUT Shows the selected memory channel. !0 DOT MATRIX INDICATORS These alphanumeric readouts show a variety of information such as current functions of the “F” keys [F1] to [F3], memory channel names, set mode items, etc. See p. 94 for an overview of these indicators. !1 METER READOUTS ➥ Shows receiving signal strength while receiving. ➥ Shows one of transmit power meter, ALC or SWR meter while transmitting. !2 FUNCTION INDICATORS ➥ “NB” appears when the noise blanker is activated. ➥ “VOX” appears when the VOX function is selected. ➥ “F-BK” appears when full break-in operation is selected and only “BK” appears when semi breakin operation is selected. ➥ “COM” appears when the speech compressor is activated. ➥ “FAGC” appears when the fast AGC function is selected. !3 DSP INDICATORS Appear when the (optional*) DSP unit UT-106 is (installed and) activated. * UT-106 DSP unit is optional for some version. PANEL DESCRIPTION ■ Microphone (HM-103) LOCK DN UP OFF ON q UP/DOWN SWITCHES [UP]/[DN] w LOCK SWITCH [LOCK] Change the operating frequency. Locks the [UP]/[DN] switches. • Push and hold to change the frequency continuously. • Tuning step is 50 Hz when no TS indicator appears. e PTT SWITCH [PTT] Push and hold to transmit; release to receive. TECHNICAL INFORMATION • MICROPHONE CONNECTOR Rear panel view PIN NO. 87654321 q +8 V DC output w Frequency up/down e AF output r PTT t GND (Microphone ground) y Microphone input u GND i Squelch switch FUNCTION DESCRIPTION +8 V DC output Max. 10 mA Frequency up Ground Frequency down Ground through 470 Ω Squelch open “LOW” level Squelch closed “HIGH” level CAUTION: DO NOT short pin 1 to ground as this can damage the internal 8 V regulator. • HM-103 SCHEMATIC DIAGRAM MICROPHONE 10µ MIC ELEMENT 2k 4700p 0.33µ MICROPHONE PLUG MICROPHONE CABLE 4700p 1 2345678 2.2k LOCK PTT RECEIVE TRANSMIT DOWN UP 470 10 2 INSTALLATION AND CONNECTIONS ■ Unpacking ■ Antenna connection After unpacking, immediately report any damage to the delivering carrier or dealer. Keep the shipping cartons. For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select antenna(s), such as a well-matched 50 Ω antenna, and feedline. 1.5:1 or better of Voltage Standing Wave Ratio (VSWR) is recommended for your desired band. Of course, the transmission line should be a coaxial cable. For a description and a diagram of accessory equipment included with the IC-703, see ‘Supplied accessories’ on p. ii of this manual. ■ Selecting a location Select a location for the transceiver that allows adequate air circulation, free from extreme heat, cold, or vibrations, and away from TV sets, TV antenna elements, radios and other electromagnetic sources. The base of the transceiver has an adjustable stand for desktop use. Set the stand to one of two angles depending on your operating conditions. (see description at right page) CAUTION: Protect your transceiver from lightning by using a lightning arrestor. PL-259 CONNECTOR INSTALLATION EXAMPLE Coupling ring ■ Grounding To prevent electrical shock, television interference (TVI), broadcast interference (BCI) and other problems, ground the transceiver through the GROUND terminal on the rear panel. For best results, connect a heavy gauge wire or strap to a long earth-sunk copper rod. Make the distance between the [GND] terminal and ground as short as possible. R WARNING: NEVER connect the [GND] terminal to a gas or electric pipe, since the connection could cause an explosion or electric shock. 30 mm 10 mm (soft solder) 10 mm Soft solder 1–2 mm Slide the coupling ring down. Strip the cable jacket and soft solder. Strip the cable as shown at left. Soft solder the center conductor. solder solder Slide the connector body on and solder it. Screw the coupling ring onto the connector body. ANTENNA SWR Each antenna is tuned for a specified frequency range and SWR may be increased out-of-range. When the SWR is higher than approx. 2.0 : 1, the transceiver’s power drops to protect the final transistors. 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. 11 INSTALLATION AND CONNECTIONS ■ Installation D Single body mounting MB-62 (optional) D Stand Spring washer Nut To raise the stand: With the transceiver upside down, pull the stand towards the rear panel and then upwards, as illustrated below. Supplied with the MB-62* then up Pull back Flat washer *CAUTION: Non-supplied screws (longer than 8 mm) may damage the internal units. D Front panel separation q While pulling the panel release button towards you, slide the front panel to the right (fig. 1). w Attach the optional OPC-581 to the main body and tighten the supplied screw as in fig. 2. e Attach the other end of the OPC-581 to the detached front panel as in fig. 3. fig. 1 CAUTION: NEVER detach/attach the front panel when connecting the DC power supply (or battery). Make sure the disconnecting DC power cable from the [13.8 V] receptacle on the transceiver rear panel. fig. 2 fig. 3 Separation cable Latch Separation cable D Front panel mounting q Attach the MB-63 to a flat surface using the two supplied screws (fig. 1). w Fix the detached front panel to the MB-63 as illustrated in fig. 2. BE CAREFUL of the orientation of the MB-63, otherwise, the front panel may become attached in the opposite direction. fig. 1 fig. 2 12 2 INSTALLATION AND CONNECTIONS ■ Required connections AF RF SQL MODE BAND POWER TS P.AMP ATT RX TUNER TX RIT SUB M-CH SHIFT DISPLAY PHONES LOCK BAND MENU F 1 F 2 F 3 MICROPHONE (p. 10) GROUND (p. 11) Use the heaviest gauge wire or strap available and make the connection as short as possible. HM-103 Grounding prevents electrical shocks, TVI and other problems. CW KEY (p. 28) HF/50 MHz ANTENNA Connects to DC 9.0–15.8 V power supply. See p. 15 for details. 13 INSTALLATION AND CONNECTIONS ■ Advanced connections AF RF SQL MODE BAND POWER TS P.AMP ATT RX TUNER TX RIT SUB M-CH SHIFT DISPLAY PHONES LOCK BAND MENU HEADPHONES F 1 F 2 F 3 OPC-589 (p. 92) SPEAKER or Selectable with the [PHONE/SPEAKER] switch on the back of the front panel. EXTERNAL SPEAKER (p. 91) SM-20 ACC SOCKET (p. 8) DATA SOCKET (p. 8) 6-pin mini DIN socket to connect to a TNC, etc. for packet operation. AH-2b AH-4 (p. 16) SP-7/SP-10 DESKTOP (p. 91) MICROPHONE REMOTE (p. 71) Used for computer control and transceive operation. 14 2 INSTALLATION AND CONNECTIONS ■ DC Power voltage Depending on the applied voltage from the connected power supply, a boarder voltage of 11.0 V is set as the point where the IC-703 switches between normal operating mode (over 11.0 V), and battery operating mode (under 11.0 V: power save mode). when the voltage reaches 11.5 V. This 0.5 V voltage difference prevents irregular switching between normal mode and battery mode, caused by the voltage drop which are current capacity, receiving or transmitting. However when the connected voltage decreases from 13.8 V to 11.0V, the IC-703 switches from normal mode to battery mode. Conversely the IC-703 switches back to normal mode from battery mode When 11.3 V voltage is applied, the IC-703 may activate the battery operating mode depending on the current capacity of the power supply. ■ DC Power supply connections Use a 13.8 V DC power supply with at least 3 A capacity. when operating IC-703 with AC power. Refer to the diagram below for connection. CAUTION: • Output voltage of the power source is 9.0–15.8 V when you use a non-Icom power supply. • DC power cable polarity is correct. Red: positive (+) terminal, Black: negative (–) terminal Before connecting the DC power cable, check the following important items. Make sure: • The [POWER] switch is OFF. CONNECTING PS-125 DC POWER SUPPLY CONNECTING A DC POWER SUPPLY *13.8 V; at least 3.0 A continuous Transceiver PS-125 A DC power supply* Black Ground Connect to an AC outlet using the supplied AC cable. DC power cable Optional OPC-1248 AC outlet Red to DC power receptacle Supplied OPC-1229 AC cable 4 A fuses ■ Battery connections • RWARNING NEVER connect to a battery without supplied DC fuse, otherwise a fire hazard occur. • NEVER connect the transceiver directly to a 24 V battery. • DO NOT use the cigarette lighter socket for power connections. (See p. 7 for details) • Attach a rubber grommet when passing the DC power cable through a metal plate to prevent a short circuit. CONNECTING A VEHICLE BATTERY black red Note: Use terminals for the cable connections. Crimp Grommet Solder 12 V battery Supplied DC power cable 15 INSTALLATION AND CONNECTIONS ■ External antenna tuners and linear amplifier CONNECTING THE AH-4 Long wire or optional AH-2b IC-703 AH-4 ANT Ground Ground Coaxial cable (from the AH-4) CONNECTING THE AT-180 HF to 6 m antenna ACC cable supplied with the AT-180 [ANT] [ACC] [ACC] one of two connectors IC-703 AT-180 Ground Coaxial cable supplied with the AT-180 [ANT] [TRANSCEIVER] Ground 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 amplifier ALC output level referring to the linear amplifier instruction manual. Be sure the linear amplifier keying circuit control voltage is compatible with the IC703, before connecting to HSEND line (ACC cable). •The ALC input level must be in the range 0 V to –4 V, and the transceiver does not accept positive voltage. Non-matched ALC and RF power settings could cause a fire or damage the linear amplifier. •The specifications for the SEND relay are 16 V DC 0.5 A. If this level is exceeded, a large external relay must be used. 50 Ω coaxial cable To an antenna IC-703 ANT RF OUT RF IN ALC (Blue) ALC HSEND (Orange) SEND Ground ACC Relay 13.8V (Gray) ACC cable 16 3 BASIC OPERATION ■ When first applying power (CPU resetting) Before first applying power, make sure all connections required for your system are complete by referring to Chapter 2. Then, reset the transceiver using the following procedure. [POWER] [Y] Resetting CLEARS all programmed contents in memory channels and returns all initial set mode and quick set mode contents to their default values. [Z] q Make sure the transceiver power is OFF. w While pushing [Y] and [Z], push [POWER] to turn power ON. LSB USB CW R RTTY AM WFM TSQL SPL DSP ANF NR NB VOX F-BK COM F AGC DUP 20 40 60dB VFO A VFO B 3 5 ∞ 10 MEMO BLANK S1 3 5 7 ALC SWR PO 1 1.5 2 CLEAR ? • “CLEAR ? OK” appears as shown at right. OK Push [F-3] for 1 sec. CH F 3 e Then push [F-3] for 1 sec to start resetting. • The internal CPU is reset. • The display changes to ‘All indication,’ ‘RF power,’ ‘Power supply voltage’ and ‘Initial frequency and Mode’ as shown at right. RF POWER USB BLANK S1 PO 20 40 60dB 10 VFO A CH M1 SPL A/B XFC DC SUPPLY The transceiver’s initial frequency and mode D M1 display selection If you can’t figure out how to return to the M1 display: While pushing [MENU], turn power ON. ■ Initial settings After resetting the transceiver, set controls and switches as shown in the diagram below. [POWER]: OFF [P.AMP/ATT]: OFF (indicator lights out) [AF]: Max. CCW AF RF SQL MODE CCW : counterclockwise BAND POWER TS [RF/SQL]: Center P.AMP ATT RX [TUNER]: OFF (indicator lights out) TUNER TX RIT SUB M-CH SHIFT DISPLAY PHONES LOCK BAND [RIT/SUB]: OFF (indicator lights out) MENU F 1 [SHIFT]: Center F 2 F 3 [LOCK]: OFF (indicator light out) Turn power ON, then check the display. If any of the following indicators appear, turn them OFF as follows: • Tuning step indicators, Z, (SSB, CW or RTTY): Push [TS]. • MHz tuning step indicator, Z, (FM or AM): Push [TS]. • 1 Hz frequency readout (SSB, CW or RTTY): Push and hold [TS]. 17 • Memory mode indicator, MEMO: Use [(F-3)V/M] in the M2 display (p. 75). • Split indicator, ä: Use [(F-1)SPL] in the M1 display (p. 75). BASIC OPERATION ■ VFO description VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator. The IC-703’s VFO can store a frequency and an operating mode. You can call up a desired frequency to a VFO with the memo pad-read switch (p. 60) or with the memory transfer switch (p. 58). You can also change the frequency with the main dial and select an operating mode with the [MODE] switch or call up previously accessed frequency and modes with the band stacking register (p. 22). The IC-703 has two VFOs, specially suited for split frequency operation. The VFOs are called VFO A and VFO B. You can use the desired VFO to call up a frequency and operating mode for operation. VFO Select MODE SWITCH USB Change VFO A DIAL CH M1 SPL A/B XFC Transfer Transfer MEMO PAD MEMORY CHANNEL 28.025 MHz 7.001 MHz Transfer BAND 21.295 MHz D The differences between VFO and memory mode VFO MODE Each VFO shows a frequency and operating mode. If the frequency or operating mode is changed, the VFO automatically memorizes the new frequency or operating mode. MEMORY MODE (pgs. 56–60) Each memory channel shows a frequency and operating mode like a VFO. Even if the frequency or mode is changed, the memory channel does not memorize the new frequency or operating mode. When the VFO is selected from another VFO or memory mode, the last-used frequency and operating mode for that VFO appear. When a memory channel is selected from another memory channel or VFO mode, the memorized frequency and operating mode appear. [EXAMPLE] [EXAMPLE] VFO is selected. USB Memory channel 1 is selected. USB VFO A MEMO CH The frequency is changed. USB CH The frequency is changed. USB VFO A MEMO CH Memory mode is selected. USB MEMO Another memory channel is selected. USB MEMO CH VFO is selected again. USB CH CH Memory channel 1 is selected again. USB VFO A CH Changed frequency (14.123 MHz) appears. MEMO CH Changed frequency (14.123 MHz) does not appear and memorised frequency (14.100 MHz) appears instead. 18 3 BASIC OPERATION ■ Frequency setting • Band selection All HF ham bands, the 50 MHz band and a general coverage receiver band are included in the IC-703. [Y] Push [(Y)BAND]/[(Z)BAND] to select the desired band. [Z] • Pushing [(Y)BAND]/[(Z)BAND] continuously scrolls through the available bands. The band stacking register can also be used to select bands. Refer to p. 22. FM LSB USB USB USB • Programmable tuning steps Programmable tuning steps are available to suit your operating requirements. These tuning steps are: • Independently selectable for each mode • Selectable from 0.01 (FM/AM only), 0.1, 1, 5, 9, 10, 12.5, 20, 25 and 100 kHz [TS] Main dial q Push [TS] one or more times until the programmable tuning step indicator “Z” appears above the 1 kHz digit. USB Programmable tuning step indicator • Rotating the main dial changes the frequency according to the set tuning step. w Push [TS] for 1 sec. while the programmable tuning step indicator appears to enter the tuning step selection mode. S1 20 PO 40 60dB 10 VFO A CH M1 SPL A/B XFC • “Rotate DIAL” appears. e Rotate the main dial to set the desired tuning step. USB • Change the mode and select tuning steps for other modes, if desired. r Push [TS] to exit the tuning step selection mode. t Rotate the main dial to change the frequency according to the set tuning step. 19 Rotate DIAL 10 kHz tuning step is selected for USB operation. BASIC OPERATION • 1 Hz and 10 Hz tuning steps When neither the quick tuning step or programmable tuning step “Z ” 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. [MODE] q Select SSB, CW or RTTY mode if necessary. w Push [TS] for 1 sec. to toggle between the 1 Hz and 10 Hz step settings. • When the 1 Hz step is selected, the 1 Hz digit appears in the frequency indication; when the 10 Hz step is selected, the 1 Hz digit disappears from the frequency indication. • Rotating the main dial changes the frequency 1 Hz or 10Hz tuning step. [TS] Main dial Rotating the main dial changes the frequency in 10 Hz steps. USB VFO A Push TS for 1 sec. Rotating the main dial changes the frequency in 1 Hz steps. USB VFO A • 1 MHz quick tuning step The quick tuning step function allows you to change the frequency in 1 MHz steps when rotating the main dial. This function is only available in FM and AM modes. [MODE] q Select FM or AM mode if necessary. w Push [TS] momentarily to toggle between the 1 MHz tuning step and the programmable tuning step. • “Z” appears above the 1 MHz indicator when the 1 MHz tuning step is selected. • Rotating the main dial changes the frequency 1 MHz or set tuning step. [TS] Main dial Quick tuning step indicator FM FM Rotating the main dial changes the frequency in 1 MHz steps. 20 3 BASIC OPERATION • [TS] switch flow chart SSB/CW/RTTY modes Any mode FM/AM modes Appears USB TS 10 Hz tuning momentarily USB FM TS Programmable step tuning (100 Hz –100 kHz) 1 sec. momentarily 1 MHz tuning 1 sec. TS TS 1 sec. momentarily USB 1 Hz tuning Appears USB Appears Rotate DIAL Selectable for each mode. • Sub dial function The sub dial function allows you to change the operating frequency using the [M-CH] control. This gives you more control in tuning since the [M-CH] knob is detented—each click changes the frequency according to the set tuning step. This function is always available in FM and AM modes. However, in SSB, CW and RTTY modes, the initial set mode item “21 SUB DIAL” (p.61), must be set to “FrEq.” q Push [RIT/SUB] to turn the sub dial function ON. • The [SUB] indicator lights green; if it lights red, the RIT function is activated—sub dial function must be set in initial set mode in this case. w Rotate [M-CH] to change the operating frequency according to the set tuning step. e Push [RIT/SUB] again to turn the function OFF. • The [SUB] indicator turns off. [M-CH] [RIT/SUB] RIT/ SUB 21 Indicator lights green while the sub dial function is activated. 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. q Select S3. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S3. w Push [F-1], [F-2] or [F-3] to select a band stacking register. • The default settings for [F-1], [F-2], [F-3] are 7, 14, 21 MHz bands, respectively. [F-1] [F-3] [MENU] [F-2] [DISPLAY] e To change the settings for [F-1], [F-2] or [F-3] from their defaults, push [F-1], [F-2] or [F-3] for 1 sec. one or more times to until the desired band appears in the display above the corresponding switch. • The last-used frequency and mode for the selected band are displayed. USB S1 PO BAND 1.9 MHz 3.5 MHz 7 MHz 10 MHz 14 MHz 18 MHz 21 MHz 24 MHz 28 MHz 50 MHz*2 General*3 FREQUENCY 1.90000 MHz*1 3.55000 MHz 7.05000 MHz 10.12000 MHz 14.10000 MHz 18.10000 MHz 21.20000 MHz 24.95000 MHz 28.50000 MHz 50.10000 MHz 15.00000 MHz MODE CW LSB LSB CW USB USB USB USB USB USB USB S3 7 20 40 60dB VFO A BLANK 10 14 21 PO S3 7 20 40 60dB 10 VFO A BLANK GEN 21 CH USB S1 Display shows the default bands for the quick band change function. CH Display shows [F-2] has been changed from its default of the 14 MHz band to the general receiver band. *1 1.83000 MHz for Italy version (#10, #20). *2 50 MHz band is not available for some version. *3 General refers to the general coverage receiver (GEN in the display) and the range varies according to version. 22 3 BASIC OPERATION ■ Operating mode selection The following modes are available in the IC-703: SSB (LSB/USB), CW, CW-å (CW reverse), RTTY and åRTTY (RTTY reverse), FM, AM. [MODE] • 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. See the diagram at right for the order of selection. • The selected mode is indicated in the function display. OPERATING MODE SELECTION • CW-å (CW reverse) mode selection q When selecting CW mode, push [DISPLAY] for 1 sec. to enter quick set mode. w Push [MENU] one or more times to select item “Q3 CW REV” during CW mode. USB LSB CW Memory keyer set mode RTTY SSB-D FM AM • [Y]/[Z] or [M-CH] can also be used. e Rotate the main dial to select CW reverse. r Push [DISPLAY] to exit quick set mode. • “CW-å” appears. Push MODE momentarily Push MODE for 1 sec. • åRTTY (RTTY reverse) mode selection q When selecting RTTY mode, push [DISPLAY] for 1 sec. to enter quick set mode. w Push [MENU] one or more times to select item “Q2 RTTY REV” during RTTY mode. [MODE] [Y] • [Y]/[Z] or [M-CH] can also be used. e Rotate the main dial to select RTTY reverse. r Push [DISPLAY] to exit quick set mode. • “åRTTY” appears. Note: If a desired mode cannot be selected, it may be hidden using initial set mode (p. 76). [Z] [M-CH] [MENU] ■ Volume setting Rotate [AF] control to output a suitable audio level. AF 23 RF/SQL Decreases Increases No audio output Max. audio output [AF] [DISPLAY] BASIC OPERATION ■ Squelch and receive (RF) sensitivity Adjusts the RF gain and squelch threshold level. The squelch removes noise output from the speaker (closed position) when no signal is received. [RF/SQL] • The squelch is particularly effective for FM mode. It is also available for other modes. • The control can be set as the RF gain control only (squelch is fixed open) or squelch control (RF gain is fixed at maximum) in initial set mode (p. 79). See below right. • The 11 to 12 o’clock position is recommended for any setting of the [RF/SQL] control. • When setting as RF gain/squelch control SET MODE OPERATION RF+SQL (default) Can be used in all modes. Functions as noise squelch or S-meter squelch in AM and FM modes; Smeter squelch only in other modes. SQL Operates as a squelch control. • RF gain is fixed at maximum sensitivity. Operates as an RF gain control in SSB, CW and RTTY modes. AUTO Noise squelch (FM mode) Recommended level Squelch is open. Maximum RF gain RF gain adjustable range S-meter squelch • Squelch is fixed open. Operates as a squelch control in AM and FM modes. • RF gain is fixed at maximum sensitivity. • When functioning as RF gain control (Squelch is fixed open; SSB, CW, RTTY only) Maximum RF gain Adjusting RF gain (Receive sensitivity) Normally, [RF/SQL] is set to the 11 o’clock position. Rotate [RF/SQL] to the 11 o’clock position for maximum sensitivity. Adjustable range • Rotating counterclockwise from the maximum position reduces sensitivity. • The S-meter indicates receive sensitivity. Minimum RF gain • When functioning as squelch control (RF gain is fixed at maximum) Adjusting squelch (Removing non-signal noise) Rotate [RF/SQL] clockwise when receiving no signal, until the noise just disappears. • [RX] indicator light goes out. • Rotating [RF/SQL] past the threshold point invokes the Smeter squelch— this allows you to set a minimum signal level needed to open the squelch. Noise squelch threshold (FM mode) Noise squelch (FM mode) Squelch is open. Shallow S-meter squelch threshold S-meter squelch Deep 24 3 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. ■ Basic transmit operation D Transmitting Before transmitting, monitor your selected operating frequency to make sure transmitting won’t cause interference to other stations on the same frequency. It’s good Amateur practice to listen first, and then, even if nothing is heard, ask “is the frequency in use” once or twice, before you begin operating on that frequency. [PTT] q Push [PTT] (microphone) to transmit. • The [TX] indicator lights red. w Release [PTT] (microphone) to return to receive. HM-103 D Maximum output power q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON and enter initial set mode. e Push [MENU] one or more times to select “1 MAX POWSET,” if necessary. [POWER] [Y] • [M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to select the desired maximum output power. • Maximum output power is selectable “0.5,” “1,” “2.5,” “5” or “10.” • Default setting is “10.” [Z] [M-CH] [MENU] [LOCK] t Push [POWER] to turn power OFF, and ON again. 1 MAX POWSET 25 BASIC OPERATION D Setting output power QUICK SET MODE q Push [DISPLAY] for 1 sec. to select quick set mode. w Push [MENU] one or more times to select “Q1 RF POWER.” e Rotate the main dial to select the desired output. Main dial • Output power is displayed in 11 steps (L, 1–9 and H) but is continuously selectable. r Push [DISPLAY] to exit quick set mode. • Available power Power supply voltage 13.8 V (DC power mode) 9.6 V (Battery mode) [MENU] SSB/CW RTTY/FM AM* 0.1–10 W 0.1–4 W 0.1–5 W 0.1–2 W [DISPLAY] Maximum output power is selected. USB 20 40 60dB 10 Q1 RF POWER *Carrier power D Setting microphone gain S1 PO QUICK SET MODE Microphone gain must be adjusted properly so that your signal does not distort when transmitted. Main dial q Select SSB or another phone mode (AM or FM mode). w Push [DISPLAY] for 1 sec. to select quick set mode. e Push [MENU] one or more times to select “Q2 MIC GAIN.” • The ALC meter is selected automatically when operating in SSB mode. [MENU] r While speaking into the microphone adjust the microphone gain so that the ALC meter does not peak past the ALC zone. t Push [DISPLAY] to exit quick set mode. Microphone gain is set to 5. USB S1 [DISPLAY] 20 40 60dB ALC Q2 MIC GAIN ALC ALC zone 26 4 RECEIVE AND TRANSMIT ■ Operating SSB q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or push for 1 sec. to select LSB or USB mode. [AF] [TX] indicator [MODE] [Y] • Below 10 MHz LSB is automatically selected; above 10 MHz USB is automatically selected. e Rotate [AF] control to set audio to a comfortable listening level. r Rotate the main dial to tune a desired signal. • S-meter indicates received signal strength. [Z] “LSB” or “USB” appears Main dial t Push [PTT] (microphone) to transmit. LSB USB CW R RTTY AM WFM • The TX indicator lights red. y Speak into the microphone at your normal voice level. • Adjust ‘MIC GAIN’ at this step, if necessary. (p. 26) u Release [PTT] (microphone) to return to receive. S1 PO 20 40 60dB 10 VFO A CH M1 SPL A/B XFC D Convenient functions for receive • Preamp and attenuator (p. 46) ➥ Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. • Lights green when the preamp is set to ON. ➥ Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. • Push [P.AMP/ATT] momentarily to turn the attenuator OFF. • Lights red when the attenuator is set to ON. • Noise blanker (p. 48) ➥ While “M3” is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. • “NB” appears when the noise blanker is set to ON. • Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. • IF shift (p. 47) ➥ Rotate [SHIFT] control. • AGC (auto gain control) (p. 48) ➥ While “M4” is selected, push [(F-3)AGC] to select AGC fast and AGC slow. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “FAGC” appears when the fast time constant is selected. • Noise reduction (p. 50) ➥ While “S4” is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. • Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. • “NR” appears when the noise reduction is set to ON. • Auto notch filter (p. 50) ➥ While “S4” is selected, push [(F-1)ANF] to turn the auto notch filter function ON and OFF. • “ANF” appears when the noise reduction is set to ON. D Convenient functions for transmit • Speech compressor (p. 54) ➥ While “M4” is selected, push [(F-2)COM] to turn the speech compressor ON and OFF. • Carrier frequency control (p. 75) ➥ While “Q3” is selected, rotate main dial to adjust the audio tone. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “COM” appears when the speech compressor is set to ON. • Push [(F-2)COM] for 1 sec. to enter the compression level set mode. • Push [DISPLAY] for 1 sec. to enter the quick set mode. • Push [MENU] one or more times to select Q3. • VOX (voice operated transmit) (p. 53) ➥ While “M4” is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “VOX” appears when the VOX function is set to ON. • Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. 27 RECEIVE AND TRANSMIT ■ Operating CW D Connections for CW Rear panel Keyer set mode setting CW [ACC] K4 CW PADDLE [KEY] Normal CW K4 CW PADDLE Reverse Paddle CW 4 3 2 1 8 7 6 5 12 11 10 9 13 For no break-in operation: Connect an external switch such as a foot switch; or use the RTTY SEND terminal for all bands. (See p. 38) K4 CW PADDLE Bug CW Straight key K4 CW PADDLE CW [MICROPHONE] See p. 31 for connection details: Paddle operation from front panel MIC connector. K4 CW PADDLE Microphone 28 4 RECEIVE AND TRANSMIT D CW operation q Connect a paddle or straight key as at previous page. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select CW mode. [AF] [TX] indicator [MODE] Main dial [Y] • After CW mode is selected, push [MODE] for 1 sec. to toggle between CW and Memory keyer modes. [Z] r While the quick set mode item “Q3” is selected in CW mode, rotate main dial to select CW or CWå mode. [MENU] • Push [DISPLAY] for 1 sec. to enter the quick set mode. • Push [MENU] one or more times to select Q3. • Push [DISPLAY] momentarily to return to normal operating mode. [F-2] [DISPLAY] “CW” or “CWå” appears LSB USB CW R RTTY AM WFM t Rotate [AF] control to set audio to a comfortable listening level. y Rotate the main dial to simultaneously tune a desired signal and its side tone. u Set CW setting in the keyer set mode. S1 20 PO • Push [MENU] one or more times to select “K2 BKIN DELAY.” • Rotate the main dial to set the desired delay time (see p. 32 for details). CH F 2 Semi break-in operation is selected. CW i Set CW break-in operation as semi break-in, full break-in or OFF. o Set the CW delay time when semi break-in operation is selected. VFO A 10 M4 1/4 KEY AGC • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • Push [(F-2)KEY] for 1 sec. to enter the keyer set mode. (p. 32) • Push [MENU] one or more times to select “K1 BKIN.” • Rotate the main dial to select CW break-in operation. ➧ FULL: full break-in ➧ on : semi break-in ➧ OFF : no break-in (ACC socket connection is necessary as at previous page.) 40 60dB K1 BK-IN CW BK S1 PO 20 40 60dB 10 Appears VFO A CH M4 1/4 KEY AGC CW !0 Keying to transmit, use the electric keyer or paddle to key your CW signals. • The TX indicator lights red. • The Po meter indicates transmitted CW signal strength. !1 Release keying to return to receive. 29 K2 BK-IN DELAY Delay time of 6.0 dots is selected for semi break-in operation. RECEIVE AND TRANSMIT D Convenient functions for receive • Preamp and attenuator (p. 46) ➥ Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. • Lights green when the preamp is set to ON. ➥ Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. • Push [P.AMP/ATT] momentarily to turn the attenuator OFF. • Lights red when the attenuator is set to ON. • Noise blanker (p. 48) ➥ While “M3” is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. • “NB” appears when the noise blanker is set to ON. • Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. • AGC (auto gain control) (p. 48) ➥ While “M4” is selected, push [(F-3)AGC] to select AGC fast and AGC slow. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “FAGC” appears when the fast time constant is selected. • IF shift (p. 47) ➥ Rotate [SHIFT] control. • Noise reduction (p. 50) ➥ While “S4” is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. • Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. • “NR” appears when the noise reduction is set to ON. • Auto notch filter (p. 50) ➥ While “S4” is selected, push [(F-1)ANF] to turn the auto notch filter function ON and OFF. • “ANF” appears when the noise reduction is set to ON. • 1⁄4 function ➥ While “M4” is selected, push [(F-1)1/4] to turn the 1⁄4 function ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. D Convenient functions for transmit • Break-in function (p. 32) ➥ While “M4” is selected, push [(F-2)KEY] for 1 sec. to enter the keyer set mode. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. ➥ Rotate the main dial to select the break-in OFF, semi break-in or full break-in. • “BK” or “F-BK” appears when the semi break-in or full break-in is set to ON, respectively. D CW reverse mode QUICK SET MODE The CWå (CW Reverse) mode receives CW signals with a reverse side CW carrier point like that of LSB and USB modes. Use this mode when interference signals are near the desired signal and you want to change the interference tone. q Select CW mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select “Q3 CW REV,” then rotate the main dial to select CW and CWå modes. • Check the interference tone. [MENU] [DISPLAY] [MODE] Main dial • Receive audio tone response (Normal) CW 600 Hz (Reverse) CWå 600 Hz r Push [DISPLAY] momentarily to exit quick set mode. BFO inteference signal inteference signal BFO 30 4 RECEIVE AND TRANSMIT D CW pitch control The received CW audio pitch and monitored CW audio pitch can be adjusted to suit your preferences (300 to 900 Hz) without changing the operating frequency. q Enter the keyer set mode. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • Push [(F-2)KEY] for 1 sec. to enter the keyer set mode. [MENU] w Push [MENU] one or more times to select “K3 CW PITCH,” then rotate the main dial to set the desired pitch. e Push [DISPLAY] to exit the keyer set mode. [F-2] [DISPLAY] Main dial This shows the default setting for the CW pitch control (600 Hz). CW K3 CW PITCH 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. [Y] • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • Push [(F-2)KEY] for 1 sec. to enter the keyer set mode. w Push [MENU] one or more times to select “K4 CW PADDLE,” then rotate the main dial to select the paddle type. • When “ud” is selected, the up/down switches on the microphone can be used as a paddle. e Push [MENU] one more time to select item “K5 RATIO,” then rotate the main dial to select the desired weight. • Key weight can be selected from 2.8 to 4.5. • Check the selected ratio with the side tone function in CW mode. r Push [DISPLAY] momentarily to return to M4. t Push [DISPLAY] for 1 sec. to enter quick set mode. y Push [MENU] once or twice to select “Q2 KEY SPEED,” then rotate the main dial to select the desired keying speed. • [M-CH] or [Y]/[Z] can also be used to select “Q2 KEY SPEED.” • Keying speed can be selected from 6 to 60 wpm. u Push [DISPLAY] momentarily to return to M4. Paddle operation from front panel MIC connector Connect a CW paddle as at right to operate an electronic keyer from the front panel MIC connector. • This function is available from the front panel mic connector only. • Be sure to select item “n,” “r,” “buG” or “oFF” in K4 CW PADDLE in the keyer set mode. (p. 32) • Connect straight key to “DOT” side. 31 [Z] [M-CH] [MENU] [F-2] [DISPLAY] Main dial KEYING WEIGHT EXAMPLE: morse code “K” DOT DASH (Fixed*) DASH Weight setting: 1:1:3 (default) Weight setting: Adjusted Adjustable range SPACE (Fixed*) *SPACE and DOT length can be adjusted with “Q2 KEY SPEED” only. CW paddle front panel MIC connector DOT 3.9 kΩ ±5% Eu MIC U/D w DASH 2.2 kΩ ±5% 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 transmitting. This allows you to match your transmit signal exactly to another station’s. This also convenient for CW practice. CW side tone level can be adjusted in the initial set mode (p. 77). D Keyer set mode While M4 is selected in CW mode, push [(F-2)KEY] for 1 sec. to enter the keyer set mode. K1 BK-IN This item sets the CW break-in operation. The breakin operation is selectable from off, on and FULL. CW The default is OFF. K2 BK-IN DELAY This item adjusts break-in delay time for CW semi break-in operation. The delay time is selectable from 2.0 to 13.0 (dots). CW The default is 7.5 dots. K3 CW PITCH This item sets the CW pitch. CW pitch is adjustable from 300 to 900 Hz in 10 Hz steps. CW The default is 600 Hz. K4 CW PADDLE This item adjusts the CW paddle type. Four selections are available. •n : normal (for electronic keyer use) •r : reverse (for electronic keyer use) • buG : When using the electronic keyer, key down produces a “dash,” releasing the key automatically produces a “dot(s).” • oFF : Turns OFF the electronic keyer (for straight key use) • ud : For using the microphone’s [UP]/[DN] keys instead of the CW paddle. CW The default is “n,” normal. K5 RATIO This item adjusts the CW key ratio (or weight). The ratio can be selected from 2.8 to 4.5. CW The default is 3.0. 32 4 RECEIVE AND TRANSMIT ■ 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]. w Push [MODE] for 1 sec. to select the memory keyer send menu. [MODE] • Push [MODE] momentarily to return to normal CW operating mode. e Push [DISPLAY] to enter the memory keyer menu. See the diagram below. • Push [DISPLAY] momentarily to return to the memory keyer send menu. • CW mode [DISPLAY] • Memory keyer send menu MODE CW Push BLANK S1 • Memory keyer menu CW Push PO 1 1.5 2 DISPLAY CW 20 40 60dB ∞ 3 5 BLANK VFO A S1 CH 10 M4 1/4 KEY AGC MODE PO 1 1.5 2 Push for 1 sec. 3 5 20 40 60dB ∞ VFO A CH 10 -1 MK1 MK2 MK3 MENU F 1 F 2 DISPLAY Push F 3 Ä EDT 001 SET MENU F 1 F 2 F 3 Push [F-1] Push [F-2] Push [F-3] Push [MENU](Ä) or [DIAPLAY] • Edit menu Push [DISPLAY] Push [DISPLAY] • Contest number set mode CW • Menory keyer set mode CW CW CW CW CW Ä MK1 MK2 MK3 MENU F 1 Push F 2 Push 01 NUM STYLE 02 CNT UP TRIG MENU 03 PRESENT No. F 3 Push* Push 01 REPEAT TIME 02 MSG DISPLAY MENU Push* *Set mode item can be selected with [Y BAND]/[Z BAND] or [M-CH] during set mode. Push [MENU](Ä) or [DIAPLAY] Push [MENU](Ä) or [DIAPLAY] CW CW 33 Push [MENU](Ä) or [DIAPLAY] CW Ä ÅCQ _ TEST CÇ Ä ÅUR _ 5NN* BÇ Ä ÅCFU TU MENU MENU MENU F 1 F 2 F 3 F 1 F 2 F 3 F 1 F 2 Ç F 3 RECEIVE AND TRANSMIT D Memory keyer send menu Pre-set characters can be sent using the memory keyer send menu. Contents of the memory keyer are set using the edit menu. [MODE] • Transmitting q Select CW mode with [MODE]. w Push [MODE] for 1 sec. to enter the memory keyer send menu. e Set the break-in function ON (p. 32). • When step r is performed during the break-in function OFF, monitors the memory keyer contents. r Push one of the function keys ([(F-1)MK1] to [(F-3)MK3]) to send the contents of the memory [F-1] [F-3] [MENU] [F-2] • Memory keyer send menu CW keyer. • Pushing a function key for 1 sec. repeatedly sends the contents and blinks “MK1,” “MK2” or “MK3” indication; push any function key to cancel the transmission. • Keying with the connected straight key or paddle to [KEY] on the rear panel is also cancels the transmission. • Under bars (_ _ _) are indicated for the count up trigger set channel. • The contest number counter is incremented each time the contents are sent. • Push [MENU] to reduce the contest number count by 1 when resending contents to unanswered calls. t Push [MODE] momentarily to exit memory keyer send menu and return to normal CW mode indication. BLANK S1 PO 20 40 60dB 10 F 1 F 2 VFO A CH -1 MK1 --MK2 MK3 MENU F 3 Sends [(F-1)MK1]–[(F-3)MK3] contents. • Memory keyer send menu -1 MK1 --MK2 MK3 Count up trigger indication • MK1 send indication -1 CQ TEST CQ • MK2 send indication -1 UR 5NN001 B Counter • MK3 send indication -1 CFM TU 34 4 RECEIVE AND TRANSMIT D Editing a memory keyer The contents of the memory keyer memories can be set using the memory keyer edit menu. The memory keyer can memorize and re-transmit 3 CW key codes for often-used CW sentences, contest numbers, etc. Total capacity of the memory keyer is 50 characters per memory channel. [MODE] Main dial • Programming contents q Select CW mode with [MODE]. w Enter the memory keyer menu. • Push [MODE] for 1 sec. to enter the memory keyer send menu. • Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-1)EDT] to enter the edit menu. r Push the multi-function key, [(F-1)MK1], [(F-2)MK2] or [(F-3)MK3], to select the desired memory keyer channel to be edited. t Input the desired character by rotating the main dial. • Selectable characters (with the main dial); A B C D E F G H I J K L M N O P Q R S T U V W X Y Z / ? . , * ^ NOTE: “^” is used to transmit a following word with no space such as AR. Put “^” before a text string such as ^AR, and the string “AR ” is sent with no space. “*” is used to insert the CW contest number. The contest number automatically increments by 1. This function is only available for one memory keyer channel at a time. Memory keyer channel MK2 used “*” by default. Push [(F-2)] to erase characters. [F-1] [F-3] [MENU] [F-2] [DISPLAY] • Memory keyer menu Ä EDT 001 SET F 1 Push • Edit menu Ä MK1 MK2 MK3 F 3 Push • MK3 indication (default) Ä Å [ DEL] Ç Displays “[DEL]” for 1 sec. then shows the default contents. Ä ÅCFU TU Ç Ä Å- Ç F 2 Push [F-2] to erase characters. y Push [(F-1)ç] or [(F-3)å] to move the cursor backwards or forwards, respectively. u Repeat steps t and y to input the desired characters. i Push [MENU] or [DISPLAY] three times to return to the keyer send menu. • Example display— when inputting QSL TU DE JA3YUA TEST into MK3 Pre-programmed contents Ä ÅYUA TEST Ç CH Ä ÅQ- Ç Ä ÅSL TU D- Ç CONTENTS MK1 CQ TEST CQ TEST DE ICOM ICOM T MK2 UR 5NN* BK MK3 CFM TU • MK1 indication (default) CW Ä ÅCQ _ TEST CÇ • MK2 indication (default) • MK3 indication (default) CW Ä ÅUR _ 5NN* BÇ CW Ä ÅCFU TU Contest number counter is set by entering an asterisk (*). 35 Ç RECEIVE AND TRANSMIT 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. • Push [MODE] for 1 sec. to enter the memory keyer [MODE] Main dial send menu. • Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-2)001] to enter the contest number set [Y] mode. r Push [MENU] once or twice to select the desired set item. • [M-CH] or [Y]/[Z] can also be used. [Z] [M-CH] [MENU] [F-2] [DISPLAY] t Set the desired condition using the main dial. y Push [DISPLAY] twice to return to the memory keyer send menu. 01 NUM STYLE (Number style) This item sets the numbering system used for contest (serial) numbers— normal or morse cut numbers. : Does not use morse cut number (default) 190.Ano : Sets 1 as A, 9 as N and 0 as O. 190.Ant : Sets 1 as A, 9 as N and 0 as T. 90.no : Sets 9 as N and 0 as O. 90.nt : Sets 9 as N and 0 as T. CW 01 NUM STYLE 02 CONT UP TRIG (Count up trigger) This selects which of the three memory slots will have the contest serial number exchange. The count up trigger allows the serial number automatically incremented after each complete serial number exchange is sent. • 1 (MK1), 2 (MK2) and 3 (MK3) can be set. (default: 2) CW 02 CNT UP TRIG 03 PRESENT No. (Present number) This item shows the current number for the count up trigger channel set above. CW • Rotate the tuning dial to change the number. 03 PRESENT No. 36 4 RECEIVE AND TRANSMIT 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. • Push [MODE] for 1 sec. to enter the memory keyer [MODE] Main dial send menu. • Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-3)SET] to enter the memory keyer set [Y] mode. r Push [MENU] to select the desired set item. [Z] • [M-CH] or [Y]/[Z] can also be used. t Set the desired condition using the main dial. y Push [DISPLAY] twice to return to the memory keyer send menu. [M-CH] [MENU] [F-3] [DISPLAY] 01 REPEAT TIME (Repeat time) When sending CW using the repeat timer, this item sets the time between transmission. CW • 1 to 60 sec. in 1 sec. steps can be selected. 01 REPEAT TIME 02 MSG DISPLAY (Message display) This item sets the indication type of the messages (pre-set characters). : Normal indication (default) [(F-1)MK1], [(F-2)MK2], [(F-3)MK3] : First three characters of the massages are indicated. e.g. [(F-1)CQ ], [(F-2)UR ], [(F-3)CFM] 3.cn : First three characters of the massages and contest number are indicated. e.g. [(F-1)CQ ], [(F-2)001], [(F-3)CFM] CW 37 02 MSG DISPLAY 4 RECEIVE AND TRANSMIT ■ Operating RTTY D Connections for RTTY (FSK) Rear panel [ACC] TU or TNC Rear panel view Personal computer 4 3 2 1 8 7 6 5 12 11 10 9 13 MSEND (orenge) GND (red) FSKK (black) SQL*1 (light green) AF out (light blue) *1Connect SQL line when required. Colors refer to connection to the supplied ACC cable. D RTTY (FSK) operation q Connect a terminal unit as at above. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select RTTY mode. [AF] [TX] indicator [MODE] Main dial [Y] • After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. r While the quick set mode item “Q2” is selected in RTTY mode, rotate main dial to select RTTY or åRTTY mode. • Push [DISPLAY] for 1 sec. to enter the quick set mode. • Push [MENU] one or more times to select Q2. • Push [DISPLAY] momentarily to return to normal operating mode. t Rotate [AF] to set audio to a comfortable listening level. y Select the desired FSK tone/shift frequencies and keying polarity as at page 40. u Rotate the main dial to tune a desired signal. • Use [(F-1)1/4] in the M4 display when critical setting is required. • S-meter indicates received signal strength. • If the received signal cannot be demodulated, try selecting åRTTY mode (or RTTY mode). [Z] [F-1] [DISPLAY] [MENU] [F-2] “RTTY” or “åRTTY” appears LSB USB CW R RTTY AM WFM S1 PO 20 40 60dB 10 VFO A CH M4 1/4 TON AGC i Transmit a SEND signal from your TNC. • The TX indicator lights red. • The Po meter indicates transmitted RTTY signal strength. o Operate the connected PC or TNC (TU) to transmit RTTY (FSK) signals. 38 4 RECEIVE AND TRANSMIT D Convenient functions for receive • Preamp and attenuator (p. 46) ➥ Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. • Lights green when the preamp is set to ON. ➥ Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. • Push [P.AMP/ATT] momentarily to turn the attenuator OFF. • Lights red when the attenuator is set to ON. • Noise blanker (p. 48) ➥ While “M3” is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. • “NB” appears when the noise blanker is set to ON. • Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. • AGC (auto gain control) (p. 48) ➥ While “M4” is selected, push [(F-3)AGC] to select AGC fast and AGC slow. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “FAGC” appears when the fast time constant is selected. D RTTY reverse mode • IF shift (p. 47) ➥ Rotate [SHIFT] control. • Noise reduction (p. 50) ➥ While “S4” is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. • Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. • “NR” appears when the noise reduction is set to ON. • Auto notch filter (p. 50) ➥ While “S4” is selected, push [(F-1)ANF] to turn the auto notch filter function ON and OFF. • “ANF” appears when the noise reduction is set to ON. • 1⁄4 function ➥ While “M4” is selected, push [(F-1)1/4] to turn the 1⁄4 function ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. QUICK SET MODE Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE. This reversal can be caused by incorrect TNC connections, settings, commands, etc. [MODE] To receive a reversed RTTY signal correctly, select åRTTY (RTTY reverse) mode. q Select RTTY mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select “Q2 RTTY REV,” then rotate the main dial to select RTTY and åRTTY modes. • Check the interference tone. r Push [DISPLAY] momentarily to exit quick set mode. [MENU] Normal Reverse Space Mark 170 Hz Space Mark 2125 Hz 2125 Hz BFO displayed freq. 39 [DISPLAY] Main dial 170 Hz BFO displayed freq. RECEIVE AND TRANSMIT D Presetting for RTTY Tone frequency q Push [MODE] momentarily to select RTTY mode. [MODE] Main dial • 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. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • Push [(F-2)TON] for 1 sec. to enter the RTTY tone set mode (below). e Push [MENU] one or more times to select “R1 RTTY TONE,” then rotate the main dial to select the desired frequency. Shift frequency q Enter the RTTY tone set mode as same as above. w Push [MENU] one or more times to select “R2 RTTY SHIFT,” then rotate the main dial to select the desired shift frequency. RTTY keying q Enter the RTTY tone set mode as same as above. w Push [MENU] one or more times to select R3 RTTY KEYING; then rotate the main dial to select the desired keying polarity. [MENU] [F-2] [DISPLAY] RTTY mark frequency is set to 2125 Hz. RTTY 2125, 1615 and 1275 Hz are available. R1 RTTY TONE RTTY shift frequency is set to 170 Hz. RTTY 170/200/425 Hz are available. R2 RTTY SHIFT After presetting is finished, push [DISPLAY] momentarily to return the normal operating mode. RTTY R3 RTTY KEYING RTTY keying is set to ‘normal’. normal : key open=mark key close=space reverse: key open=space key close=mark D RTTY tone set mode While M4 is selected in RTTY mode, push [(F-2)TON] for 1 sec. to enter the RTTY tone set mode. R1 RTTY TONE This item selects the RTTY tone. RTTY tone is selected between 1275, 1615 and 2125 Hz. RTTY The default is 2125 Hz. R2 RTTY SHIFT This item adjusts the RTTY shift. There are 3 selectable values: 170, 200 and 425 Hz. R3 RTTY KEYING RTTY The default is 170 Hz. (RTTY only) This item adjusts the RTTY keying. Normal or reverse keying can be selected. RTTY The default is “n,” normal. Normal Reverse : key open=mark : key open=space 40 4 RECEIVE AND TRANSMIT ■ Operating AM q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or push for 1 sec. to select AM mode. [AF] [TX] indicator [MODE] [Y] • After FM or AM mode is selected, push [MODE] for 1 sec. to toggle between FM and AM modes. e Rotate [AF] control to set audio to a comfortable listening level. r Rotate the main dial to tune a desired signal. [Z] Main dial “AM” appears • S-meter indicates received signal strength. • The default tuning step for AM mode is 1 kHz; this can be changed using the tuning step program mode. (p.19) LSB USB CW R RTTY AM WFM t Push [PTT] (microphone) to transmit. • The TX indicator lights red. y Speak into the microphone at your normal voice level. • Adjust ‘MIC GAIN’ at this step, if necessary. (p. 26) u Release [PTT] (microphone) to return to receive. S1 PO 20 40 60dB 10 VFO A CH M1 SPL A/B XFC D Convenient functions for receive • Preamp and attenuator (p. 46) ➥ Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. • Lights green when the preamp is set to ON. ➥ Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. • Push [P.AMP/ATT] momentarily to turn the attenuator OFF. • Lights red when the attenuator is set to ON. • Noise blanker (p. 48) ➥ While “M3” is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. • “NB” appears when the noise blanker is set to ON. • Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. • Initial set mode item “30 AM NB” (p. 80) is must be set ON when noise blanker function is used in AM mode. (Default setting is ON.) • AGC (auto gain control) (p. 48) ➥ While “M4” is selected, push [(F-3)AGC] to select AGC fast and AGC slow. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “FAGC” appears when the fast time constant is selected. • Noise reduction (p. 50) ➥ While “S4” is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. • Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. • “NR” appears when the noise reduction is set to ON. • Auto notch filter (p. 50) ➥ While “S4” is selected, push [(F-1)ANF] to turn the auto notch filter function ON and OFF. • “ANF” appears when the noise reduction is set to ON. • IF shift (p. 47) ➥ Rotate [SHIFT] control. D Convenient functions for transmit 41 • Speech compressor (p. 54) ➥ While “M4” is selected, push [(F-2)COM] to turn the speech compressor ON and OFF. • VOX (voice operated transmit) (p. 53) ➥ While “M4” is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “COM” appears when the speech compressor is set to ON. • Push [(F-2)COM] for 1 sec. to enter the compression level set mode. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “VOX” appears when the VOX function is set to ON. • Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. 4 RECEIVE AND TRANSMIT ■ Operating FM q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or for 1 sec. to select FM mode. [AF] [TX] indicator [MODE] [Y] • After FM or AM mode is selected, push [MODE] for 1 sec. to toggle between FM and AM modes. e Rotate [AF] control to set audio to a comfortable listening level. r Rotate the main dial to tune a desired signal. [Z] Main dial “FM” appears • S-meter indicates received signal strength. • The default tuning step for FM mode is 1 kHz; this can be changed using the tuning step program mode. (p.19) LSB USB CW R RTTY AM WFM t Push [PTT] (microphone) to transmit. • The TX indicator lights red. y Speak into the microphone at your normal voice level. • Adjust ‘MIC GAIN’ at this step, if necessary. (p. 26) S1 PO 20 40 60dB 10 VFO A CH M1 SPL A/B XFC u Release [PTT] (microphone) to return to receive. D Convenient functions for receive • Preamp and attenuator (p. 46) ➥ Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. • Lights green when the preamp is set to ON. ➥ Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. • Push [P.AMP/ATT] momentarily to turn the attenuator OFF. • Lights red when the attenuator is set to ON. • IF shift (p. 47) ➥ Rotate [SHIFT] control. • Noise reduction (p. 50) ➥ While “S4” is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. • Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. • “NR” appears when the noise reduction is set to ON. • Auto notch filter (p. 50) ➥ While “S4” is selected, push [(F-1)ANF] to turn the auto notch filter function ON and OFF. • “ANF” appears when the noise reduction is set to ON. D Convenient functions for transmit • VOX (voice operated transmit) (p. 53) ➥ While “M4” is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. • “VOX” appears when the VOX function is set to ON. • Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. 42 4 RECEIVE AND TRANSMIT D Tone squelch operation Tone squelch operation is a method of communications 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. [MODE] Main dial q Push [MODE] one or more times to select FM mode. w Select M4. [F-2] [DISPLAY] [MENU] FM • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. e Push [(F-2)TON] for 1 sec. to enter the FM tone set mode. T2 TONE SQL • Push [MENU] one or more times to select “T2 TONE SQL.” r Rotate the main dial to set the desired subaudible tone frequency. FM TSQL SPL • See left table for available tone frequencies. • Push [DISPLAY] to exit the FM tone set mode. t Push [(F-2)TON] once or twice to turn the tone S1 20 PO 40 60dB VFO A 10 M4 VOX TON squelch function. CH • “TSQL” appears. y Communicate in the usual manner. • Push [PTT] to transmit; release to receive. • Available tone squelch frequencies 67.0 69.3 71.9 74.4 77.0 79.7 82.5 165.5 167.9 171.3 173.8 177.3 179.9 183.5 136.5 141.3 146.2 151.4 156.7 159.8 162.2 107.2 110.9 114.8 118.8 123.0 127.3 131.8 085.4 088.5 091.5 094.8 097.4 100.0 103.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 (Unit: Hz) 210.7 254.1 218.1 225.7 229.1 233.6 241.8 250.3 D Tone scan operation By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency necessary to open a repeater. Main dial q During tone squelch or repeater operation (“T” or “TSQL” is displayed, select M4. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. w Push [(F-2)TON] for 1 sec. to enter the FM tone set • Push [MENU] one or more times to select “T3 T-SQL SCN” during tone squelch operation or “T3 RPTR-T SCN” during repeater operation. • If tone squelch function or tone encoder has not been selected, this item does not appear. e Push [(F-3)SCN] to toggle the tone scan operation ON and OFF. • While scanning, tone frequencies are displayed instead of the operating frequency. • When a matched tone is detected, tone scan automatically stops, the matched tone is displayed and the repeater tone (or tone squelch tone) setting is automatically adjusted accordingly. r Push [DISPLAY] to exit the FM tone set mode. 43 [F-2] [MENU] mode. [F-3] [DISPLAY] FM TSQL S1 PO 20 40 60dB 10 T3 T-SQL SCN FM T S1 PO 20 40 During tone squelch operation. 60dB 10 T3 RPTR-T SCN During repeater operation. RECEIVE AND TRANSMIT D FM tone set mode While M4 is selected in FM mode, push [(F-2)TON] for 1 sec. to enter the FM tone set mode. T1 RPTR TONE This item selects a subaudible tone for FM-T mode operation to access a repeater. There are 50 tones available from 67.0 Hz to 254.1 Hz (see table at right). FM The default is 88.5 Hz. • Available subaudible tone frequencies (Unit: Hz) 085.4 088.5 091.5 094.8 097.4 100.0 103.5 67.0 69.3 71.9 74.4 77.0 79.7 82.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 T2 TONE SQL This item sets a subaudible tone for tone squelch use. The same subaudible tone frequencies as for repeater operation are available—see above 210.7 254.1 218.1 225.7 229.1 233.6 241.8 250.3 FM The default is 88.5 Hz. T3 RPTR-T SCN (Repeater tone scan) During repeater operation, you can detect the tone frequency necessary to open a repeater. (see p. 45) FM-T The default is 88.5 Hz. T3 T-SQL SCN (Tone squelch tone scan) During tone squelch operation, you can detect the tone frequency necessary to communicate using tone squelch. (see p. 43) FM-TSQL The default is 88.5 Hz. 44 4 RECEIVE AND TRANSMIT ■ Repeater operation A repeater amplifies received signals and re-transmits them at a different frequency. When using a repeater, the transmit frequency is shifted from the receive frequency by an offset frequency. A repeater can be accessed using split frequency operation with the shift frequency set to the repeater’s offset frequency. [MODE] Main dial q Set the offset frequency and turn ON the quick split function in initial set mode in advance (pgs. 79, 80). [F-1] [F-3] [MENU] [F-2] [DISPLAY] • If the quick split function is turned OFF, both transmit and receive must be set separately. Turn the quick split function ON. w Push [MODE] one or more times to select FM mode, then set the receive frequency. e Select M1. (Initial set mode default is ON.) • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M1. r Push [(F-1)SPL] for 1 sec. to activate the split fre- 24 QUICK SPLIT quency function with the pre-selected offset. t Select M4. FM • Push [MENU] one or more times to select M4. y Push [(F-2)TON] for 1 sec. to enter the FM tone set mode. S1 • If FM mode has not been selected, this item does not appear. • Push [MENU] one or more times to select “T1 RPTR TONE.” • Rotate the main dial to set a subaudible tone frequency. • Push [DISPLAY] to exit the FM tone set mode. u Push [(F-2)TON] to turn the tone encoder. • “T” appears. 20 PO 40 60dB SPL VFO A CH 10 M1 SPL A/B XFC Set the tone frequency. FM i To check the repeater input frequency (direct signal from the other station), push and hold [(F-3)XFC] in the M1 display. o To return to simplex operation, push [(F-1)SPL] in the M1 display. See below table for available frequencies. T1 RPTR TONE FM T NOTE: The split function may not be turned off when you change the operating band, push [(F-1)SPL] again to turn off the split function after you finish the repeater operation. S1 PO 20 40 60dB SPL VFO A CH 10 M4 VOX TON • Available subaudible tone frequencies (Unit: Hz) CONVENIENT Each memory channel can store a tone frequency and an offset frequency, as well as the operating frequency. Store repeater information into memory channels for quick and easy access to repeaters. 45 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 254.1 218.1 225.7 229.1 233.6 241.8 250.3 FUNCTION FOR RECEIVE ■ Simple band scope This function allows you to visually “sweep” an area surrounding the set frequency for other signals. Detected signals are indicated graphically in the dot matrix section of the display. Main dial NOTE: Use the attenuator or turn OFF the preamp when using the band scope on a band containing a lot of noise. [F-1] [F-3] [MENU] [F-2] [DISPLAY] q Set a mode and frequency. w Select G1. • Push [DISPLAY] once or twice to select G. • Push [MENU] one or more times to select G1. 1k SWP 2k SWP Select sweep width ([F-1]) r Push [F-3] to start the sweep. 2k SWP ___ Start sweep ([F-3]) t Rotate the main dial if you want to monitor the displayed signals. 2k SWP Sweep is finished ([F-3] again) e Push [F-1] one or more times to select the desired steps. • Each dot corresponds to a step for the indicated frequency. • 0.5k, 1k, 2k, 5k, 10k, 20k and 0.1M (100 kHz) can be set for the scope step. • “___” (below SWP) flashes while sweeping. • The receive audio is muted while sweeping. sweep marker • The sweep marker indicates the location of the displayed frequency in the sweep readout. • If the displayed frequency is outside of the sweep readout (determined by the sweep width), the sweep marker flashes. 2k SWP Move sweep marker (main dial) y Push [F-2] to return the frequency to the start of a sweep. 2k SWP Returns to previous frequency ([F-2]) • The sweep marker moves back to the center position. ■ Preamp and attenuator The preamp amplifies received signals in the front end circuit to improve the S/N ratio and sensitivity. Turn this function ON when receiving weak signals. [P.AMP/ATT] The attenuator prevents desired signals from distorting when very strong signals are near the desired frequency or when very strong electric fields, such as from broadcasting stations, are near your location. Push [P.AMP/ATT] momentarily to turn the preamp ON and OFF; push for 1 sec. to turn the attenuator ON. P.AMP/ATT • Lights green when the preamp is ON; lights red when the 20 dB attenuator is ON. • Only one of these functions can be activated at a time. momentarily P.AMP/ATT P.AMP/ATT Lights green while the preamp is activated; lights red while the attenuator is activated. momentarily 1 sec. 46 5 FUNCTION FOR RECEIVE ■ RIT function The RIT (Receive Incremental Tuning) function compensates for off-frequencies of communicating stations. The function shifts the receive frequency up to ±9.99 kHz in 10 Hz steps without moving the transmit frequency. “21 SUB DIAL” item in initial set mode must be set to RIT mode in advance. (p. 79) q Push [RIT]. [M-CH] [RIT] • The [RIT] indicator lights red. w Rotate the [M-CH] control to cancel the off-frequencies. • The transmit frequency is not shifted. e To cancel the RIT function, push [RIT] again. RIT SUB Indicator lights red while RIT function is activated. • The [RIT] switch indicator goes out. • Calculate function The shift frequency of the RIT function can be added/subtracted to the displayed frequency. USB Push for 1 sec. RIT SUB While the RIT indicator is lit, push and hold [RIT] for 1 sec. USB NOTE: The RIT function is not available in FM or AM modes regardless of the Initial Set mode setting. (p. 79) ■ IF shift function The IF shift function electronically changes the passband frequency of the IF (intermediate frequency) and cuts out higher or lower frequency components of the IF to reject interference. The function shifts the IF frequency up to ±1.2 kHz in 15 Hz steps in SSB/CW/RTTY modes and up to ±250 Hz in 3 Hz steps in CW-ã/RTTY-ã modes. The IF shift is not available in FM and AM modes. (ã: Narrow) [SHIFT] q Adjust the [SHIFT] control for a minimum interference signal level. SH M- • The audio tone may be changed while the IF shift is in use. IFT CH SHIFT w Set the shift control to its center position when there is no interference. M-CH • Graphic display SHIFT M-CH SHIFT M-CH SHIFT The IF shift is displayed graphically (for about 1 sec.) each time the shift control is rotated. USB S1 20 40 60dB VFO A CH 47 Shifts low Center Shifts high FUNCTION FOR RECEIVE ■ 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 pulsetype noise. If you don’t want to use the noise blanker for AM communications, the “30 AM NB” item in initial set mode must be turned OFF (ON is the default setting—p. 80). [MENU] q Select M3. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. [F-2] [DISPLAY] Main dial USB w Push [(F-2)NB] to toggle the noise blanker ON and OFF. NB S1 • “NB” appears when the noise blanker is turned ON. e Push [(F-2)NB] for 1 sec. to enter the noise blanker PO 20 40 60dB VFO A 10 M3 FIL NB level set mode (below). r Rotate the main dial to set the noise blanker level. t Push [DISPLAY] to exit the noise blanker level set mode. CH MET Appears when the noise blanker is turned ON. D Noise blanker level set mode While M3 is selected in all modes, push [(F-2)NB] for 1 sec. to enter the noise blanker level set mode. N1 NB LEVEL This item adjusts the noise blanker level. The noise blanker level can be adjusted from 0 to 10. USB The default is 5. Although noise blanker level set mode is available in all modes, the noise blanker function is not effective for FM mode. ■ AGC time constant The AGC (Automatic Gain Control) controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading, etc. Use AGC slow for normal phone operation; AGC fast for receiving data and searching for signals. AGC time constant cannot be changed in FM mode. q Select M4. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. w Push [(F-3)AGC] to toggle the AGC time constant between fast and slow. • “FAGC” appears when the fast time constant is selected. [F-3] [DISPLAY] [MENU] USB F AGC S1 PO 20 40 60dB 10 VFO A CH M4 VOX COM AGC Appears when AGC fast is selected. 48 5 FUNCTION FOR RECEIVE ■ Optional filter selection One optional filter can be installed in the IC-703. Narrow filters help reject interference from adjacent signals and obtain good selectivity. NOTE: When selecting the narrow filter (or wide filter), the graphic passband is changed. (see diagram below) Wide filters provide improved audio for SSB operation when no interfering signals are present. Consult the table below to select a filter most suitable for your operating needs. wide is selected Normal operation narrow is selected Narrow filters for AM/FM modes are standard. FILTER PRESETTING: After you install a filter (see p. 87 for installation), you must specify the installed filter in initial set mode (item “22 OPT. FIL” ; see p. 79). FILTER ON/OFF: q Select M3. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. w Push [(F-1)FIL] momentarily to select the narrow filter; push for 1 sec. to select the wide filter. • ã appears when the narrow filter is selected; ç appears when the wide filter is selected. [F-1] [MENU] [DISPLAY] • Filter variations Name Mode Bandwidth FL-53A* CW, RTTY 250 Hz/–6 dB FL-52A* CW, RTTY 500 Hz/–6 dB FL-222* SSB, CW, RTTY 1.8 kHz/–6 dB FL-65 SSB, CW, RTTY 2.3 kHz/–6 dB FL-96** SSB, CW, RTTY 2.8 kHz/–6 dB 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 Bandwidth Narrow Medium Wide AM ——— FL-65 (2.3 k) ——— FM FL-52A FL-52A (500) FL-65 (2.3 k) ——— FL-53A FL-53A (250) FL-65 (2.3 k) ——— Filter No optional filter FL-96 FL-222 FL-257 49 ——— FL-65 (2.3 k) FL-96 (2.8 k) FL222 (1.8 k) FL-65 (2.3 k) ——— ——— FL-65 (2.3 k) FL-257 (3.3 k) Normal CFWS455G (8 k) Narrow FL-65 (2.4 k) Normal Through (15 k) Narrow CFWS455G (8 k) FUNCTION FOR RECEIVE ■ Peak meter hold INITIAL SET MODE The peak meter hold function freezes the highest displayed bar segment in any meter function for about 0.5 sec. so that you can more easily read the meter. This function can be turned ON and OFF in initial set mode (item “23 PEAK HOLD” ; see p. 79). [EXAMPLE]: S1 20 40 60dB Initial reception of a signal results in an S-meter reading of 40 dB. S1 20 40 60dB The highest indicated bar remains displayed for about 0.5 sec. even when the signal strength decreases. ■ DSP Functions (may require an optional unit depending on version—see p. 92) D ANF (Automatic Notch Filter) function This function automatically attenuates beat tones, tuning signals, etc., even if they are moving. The automatic notch filter functions in SSB, FM and AM modes. q Select S4 (DSP menu). • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. w Push [(F-1)ANF] to toggle the automatic notch fil- ter ON and OFF. • “DSP” and “ANF” appear when the function is ON. [F-1] [MENU] [DISPLAY] USB DSP ANF BLANK S1 20 PO VFO A 40 60dB CH 10 S4 ANF NR NRL D NR (Noise Reduction) function This function reduces noise components and picks out desired signals which are buried in noise. The received AF signals are converted to digital signals and then the desired signals are separated from the noise. The noise reduction function is available for all operating modes. q Select S4 (DSP menu). • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S4. w Push [(F-2)NR] to toggle the noise reduction func- tion ON and OFF. • “DSP” and “NR” appear when the function is ON. e Push [(F-3)NRL] to toggle the noise reduction level indication ON and OFF. r Rotate the [M-CH] control to set the noise reduction level. • Set the control for maximum readability. Deep rotation results in audio signal masking or distortion. [MENU] [M-CH] [F-3] [F-2] [DISPLAY] USB DSP NR BLANK S1 PO 20 40 60dB 10 S4 ANF NR VFO A CH NRL USB DSP NR BLANK S1 PO 20 40 60dB 10 VFO A CH S4 LEVEL 4 NRL 50 6 FUNCTION FOR TRANSMIT ■ 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 mode in VFO B (for transmitting). [F-1] [F-3] [MENU] [F-2] [DISPLAY] Main dial q Select VFO A and set the frequency to 7.057 MHz/CW. • [(F-2)A/B] is available when M1 appears. • [(F-3)V/M] is available when M2 appears. CW S1 20 PO w Push or push and hold [(F-1)SPL] in the M1 display. ➥ Push [SPL]: activates split only. ➥ Push and hold [SPL]: activates the quick split next page. e To change the receive frequency, rotate the main dial; to change the transmit frequency, rotate the main dial while pushing [(F-3)XFC]. • The transmit frequency can be monitored while pushing [(F-3)XFC]. • Split operation is now set for receive on 7.057 MHz/CW and transmit on 7.025 MHz/CW. To exchange the transmit and receive frequencies, push [(F-2)A/B] in M1. CONVENIENT The G3 display conveniently shows the transmit frequency during split frequency operation and pushing [(F-3)Ñ] allows you to change the transmit frequency. • Split lock function The split lock function is convenient for changing only the transmit frequency. Otherwise, accidentally releasing the [(F-3)XFC] switch while rotating the main dial changes the receive frequency. The split lock’s effectiveness can be selected in initial set mode (item “25 SPLIT LOCK”) for both receive and transmit frequencies; or only the receive frequency. (p. 80) 51 SPL 40 60dB VFO A CH 10 M1 SPL A/B XFC CW S1 PO SPL 20 40 60dB VFO A CH 10 M1 SPL A/B XFC CW S1 SPL 20 40 60dB VFO B PO 10 CH M1 SPL A/B XFC 6 FUNCTION FOR TRANSMIT D Quick split function In M1, when you push [(F-1)SPL] for 1 sec., split frequency operation is turned ON and VFO B is automatically 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). This shortens the time needed to start split frequency operation—great for DX’ing. [F-1] [MENU] [DISPLAY] The quick split function is ON by default. If desired, it can be turned OFF in initial set mode (p. 79). In this case, pushing [(F-1)SPL] for 1 sec. has the same effect as pushing [(F-1)SPL] momentarily as in normal split operation. SPL Push F-1 for 1 sec. VFO A PROGRAMMING SPLIT SHIFT FREQUENCY (p.80) q Push [POWER] to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON and enter initial set mode. e Select “26 SPL OFFSET” using [MENU], [MCH] or the [Y]/[Z] keys, then rotate the main dial to select the desired split offset. • The split offset can be selected from –9.999 MHz to +9.999 MHz. SPL SPL VFO A No shift frequency is programmed. VFO B SPL SPL VFO A VFO B +10 kHz is programmed as a shift frequency. 26 SPL OFFSET ■ Meter selection The bar meter in the function display acts as an S-meter for relative signal strength during receiving and can be selected for one of three types during transmitting. q Select M3. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3. w Push [(F-3)MET] one or more times to select the [MENU] [F-3] [DISPLAY] desired meter function. • The display indication changes as in the table at right. DISPLAY INDICATION MEASUREMENT Po Indicates the relative RF output power. ALC Indicates the ALC level. When the meter movement shows the input signal level exceeds the allowable level, the ALC limits the RF power. In such cases, reduce the microphone gain (see above). SWR Indicates the SWR over the transmission line. 52 6 FUNCTION FOR TRANSMIT ■ VOX operation The VOX (Voice-operated Transmission) function toggles between transmit and receive with your voice. This function provides an opportunity to input log entries into your computer, etc., while operating. q Select M4. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M4. w Push [(F-1)VOX] to toggle the VOX function ON [F-1] [MENU] [DISPLAY] Main dail and OFF. • “VOX” appears when the function is ON. LSB USB CW R RTTY AM WFM e Push [(F-1)VOX] for 1 sec. to enter the VOX set mode (below), then set the ‘VOX delay,’ ‘VOX gain’ and ‘ANTI-VOX’ if desired. r Select “VOX DELAY” in VOX set mode. VOX S1 PO COM 20 40 60dB VFO A 10 CH M4 VOX COM AGC • Push [MENU] one or more times to select V1. • While speaking into the microphone, adjust ‘VOX DELAY’ as desired. t Select “VOX GAIN” in VOX set mode. • Push [MENU] one or more times to select V2. • While speaking into the microphone, adjust ‘VOX GAIN’ until the transceiver is transmitting. y Select “ANTI VOX” in VOX set mode. • Push [MENU] one or more times to select V3. • If the receive audio from the speaker toggles the transceiver to transmit during receive, adjust the ‘ANTI-VOX’ to the point where it has no effect. u Push [DISPLAY] to exit VOX set mode. D VOX set mode While M4 is selected in SSB/AM/FM modes, push [(F-1)VOX] for 1 sec. to enter the VOX set mode. V1 VOX DELAY This item adjusts the VOX (Voice-activated Transmit) delay time. The delay time can be adjusted from 0 to 2 sec. in 0.1 sec. steps. USB The default is 1.0 seconds. V2 VOX GAIN This item adjusts the VOX gain for the VOX (voice activated transmit) function. USB The default is 5. V3 ANTI VOX This item adjusts the ANTI-VOX gain for the VOX (voice activated transmit) function. 53 USB The default is 5. FUNCTION FOR TRANSMIT ■ Speech compressor The IC-703 has a built-in, low distortion speech compressor 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. [MODE] q Select USB or LSB mode. w Select the mic gain display in quick set mode. • Push [DISPLAY] for 1 sec. • Push [MENU] one or more times to select “Q2 MIC GAIN.” • The ALC meter is selected automatically when operating in SSB mode. LSB USB CW R RTTY AM WFM e Adjust the mic gain. VOX • While transmitting at your normal voice level, the ALC meter should read at about the middle of the ALC zone. • Be sure the mic gain is in the range of 2 to 5. S1 t Push [MENU] one or more times to select M4. y Push [(F-2)COM] to turn the speech compressor function ON. • “COM” appears. u Push [(F-2)COM] for 1 sec. to enter the compres- sion level set mode (below). i Rotate the main dial to set the speech compression level. PO COM 20 40 60dB VFO A 10 CH M4 VOX COM AGC r Select the ALC meter. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M3, then push [(F-3)MET] one or more times to select “ALC.” [F-3] [F-2] [DISPLAY] Main dail [MENU] ALC ALC zone Adjust ‘COMP LEVEL’ so that the ALC meter reads within the ALC zone. NOTE: When the ALC meter peaks above the ALC zone, your transmitted voice may be distorted. D Compression level set mode While M4 is selected in SSB/AM modes, push [(F-2)COM] for 1 sec. to enter the compression level set mode. C1 COMP LEVEL This item adjusts the speech compression level. The speech compression level can be adjusted from 0 to 10. USB The default is 5. 54 6 FUNCTION FOR TRANSMIT ■ SWR D Measuring SWR The IC-703 has a built-in circuit for measuring antenna SWR—no external equipment or special adjustments are necessary. [MODE] The IC-703 can measure SWR in 2 ways: (A) Spot measurement; or (B) Plot measurement. (A) Spot measurement q Confirm that the output power is over 5 W. w Push [MENU] one or more times to select M3. e Push [(F-3)MET] to select the SWR meter. r Push [MODE] one or more times to select CW or RTTY operation. CW BLANK • Key down or push [PTT] to transmit; then read the actual SWR from the meter: ➠ ≤ 1.5 well matched antenna ➠ > 1.5 check antenna or cable connection, etc. S1 SWR • RTTY mode is selected automatically. SWR PO 20 G2 50k 40 60dB 10 VFO A Marker CH STR Start 4.0 3.5 3.0 2.5 2.0 1.5 1.0 The antenna is well matched in this range !0 Repeat steps i and o to measure SWR over the entire frequency range. !1 When the measured SWR is less than 1.5, the antenna is well matched. 55 20 40 60dB ∞ 1 1.5 2 VFO A CH MET ∞ STR Frequency span Step bar indication Frequency indication mark Measure start indicator Step bar G2 10k BLANK 1 1.5 2 [F-3] [F-1] [MENU] [F-2] [DISPLAY] Span The best match is in this range. RTTY S1 M3 FIL NB (B) Plot measurement Plot measurement allows you to measure the SWR over an entire band. q Confirm that the output power is over 5 W. w Push [DISPLAY] once or twice to select G. e Push [MENU] one or more times to select G2. r Set the center frequency for the SWR to be measured. t Push and hold [(F-1)10k] one or more times to select the desired frequency pitch. y Push and hold [(F-2)] one or more times to select the desired step. u After selecting the desired pitch and step, push [(F-3)STR] to measure the SWR. i Push and hold [PTT] to display the SWR in a bar graph readout. o When [PTT] is released, the frequency marker and frequency indication move to the next frequency to be measured. [F-3] [DISPLAY] [MENU] Push [F-1] for 1 sec. to change the selected span. Push [F-2] to change the step bar (3, 5, 7 or 9 steps are available. Indicates the currently active step bar. Flashes while the SWR is being measured. 7 MEMORY OPERATION ■ Memory channels The transceiver has 105 memory channels (includes 6 scan edge channels). Memory mode is useful for quickly changing to often-used frequencies. NOTE: During split frequency operation, programmed memory contents can be called up to the SUB readout (dot matrix portion of the display). All 105 memory channels are tuneable which means the programmed frequency can be tuned temporarily with the main dial, etc., in memory mode. MEMORY CHANNEL NUMBER CAPABILITY TRANSFER TO VFO OVERWRITING CLEAR Regular (split memory) 1–99 Independent transmit and receive frequencies and one mode in each memory channel. In addition, tone frequencies can also be stored for repeater use. Yes Yes Yes Scan edges 1A–3B (3 pairs) One frequency and one mode in each memory channel as scan edges for programmed scan. Yes Yes No MEMORY CHANNEL ■ Memory channel selection q Select M2 functions. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M2. w Push [(F-3)V/M] to select memory mode. e Rotate [M-CH] to select the desired memory channel. • All memory channels including blank channels can be selected. • [UP]/[DN] on the microphone changes the frequency. r To return to VFO mode, push [(F-3)V/M] again. [F-3] [DISPLAY] [M-CH] [MENU] [EXAMPLE]: Selecting memory channel 17. CW VFO A CH V/M F-3 USB M-CH MEMO USB SHIFT CH SPLIT MEMO CH 56 7 MEMORY OPERATION ■ Memory programming • Programming in VFO mode q Select M2 functions. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M2. w Set the desired frequency and operating mode in VFO mode. • If you want to program the split frequency function, program both receive and transmit frequencies into VFO A and B, then turn ON the split function. • If you want to program a repeater function, set a tone frequency (pgs. 44, 45) in addition to the receive/transmit frequencies. [M-CH] [MENU] [F-1] [F-3] [DISPLAY] [EXAMPLE]: Programming 7.088 MHz/LSB into ch 12. CW TS e Rotate [M-CH] to select the desired memory channel. VFO A MODE CH • Select memory mode to confirm the contents, if desired. • “}” appears if the selected memory channel is a blank channel (and does not have contents). r Push [(F-1)MW] for 1 sec. to program the displayed LSB M-CH VFO A frequency and operating mode into the memory channel. SHIFT CH LSB To check the programmed contents, push [(F-3)V/M] to select memory mode. VFO A BLANK SPLIT CH LSB MW F-1 Push for 1 sec. VFO A CH • Programming in memory mode [EXAMPLE]: Programming 21.280 MHz/USB into ch 18. q Select M2 functions. USB • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M2. w Set the desired frequency and operating mode. e Push [(F-3)V/M] to select memory mode, then select the desired memory channel with [M-CH]. M-CH MEMO CH MEMO CH CW • Push [Y]/[Z] when you want to program blank channels. r Push [(F-1)MW] for 1 sec. to program the displayed frequency and operating mode into the memory channel. SHIFT TS USB MODE [Y] SPLIT MEMO CH USB MW F-1 [Z] [MENU] [M-CH] [F-1] 57 [F-3] [DISPLAY] MEMO CH Push for 1 sec. 7 MEMORY OPERATION ■ Memory clearing Any unnecessary memory channels can be cleared. The cleared memory channels become blank channels. q Select M2 functions. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M2. w Push [(F-3)V/M] to select memory mode. e Rotate [M-CH] to select a memory channel to be cleared. r Push [(F-2)MCL] for 1 sec. to clear the contents. [M-CH] [MENU] [F-3] [F-2] [DISPLAY] USB • The programmed frequency and operating mode disappear and “}” appears. t To return to VFO mode, push [(F-3)V/M] again. SPLIT MEMO CH MCL F-2 Push for 1 sec. BLANK MEMO CH ■ Frequency transferring The frequency and operating mode can be transferred from memory mode to VFO mode. q Select M2 functions. • Push [DISPLAY] once or twice to select M. • Push [MENU] one or more times to select M2. w Select VFO mode with [(F-3)V/M]. e Select a memory channel with [M-CH]. • Select memory mode to confirm the memory channel’s contents, if desired; then return to VFO mode. • “}” appears if the selected memory channel is a blank channel (and does not have contents). In this case transferring is not possible. r Push [(F-3)V/M] for 1 sec. to transfer the frequency [F-3] [DISPLAY] [M-CH] [MENU] [EXAMPLE]: Transferring contents of memory 16. Operating frequency: 21.320 MHz/USB (VFO) Contents of memory 16: 14.020 MHz/CW USB and operating mode. • Transferred frequency and operating mode appear in the display. M-CH VFO A SHIFT CH USB VFO A SPLIT CH CW V/M F-3 Push for 1 sec. VFO A CH 58 7 MEMORY OPERATION ■ Memory names All memory channels (including scan edges) can be tagged with alphanumeric names of up to 9 characters each. All common keyboard characters (ASCII characters 33 to 126) can be used, including numerals and punctuation marks. • Calling up memory names q Select the G4 display. • Push [DISPLAY] once or twice to select G. • Push [MENU] one or more times to select G4. w Select a memory channel with [M-CH]. • Editing (programming) memory names q Call up the desired memory (channel) name as above. w Push [(F-3)É] to enter memory name edit mode. • “[DEL]” appears briefly, then a cursor blinking under the first character position. e Rotate the main dial to select the desired character, then advance the cursor position. • Pushing [(F-3)Ç] moves the cursor to the right; [(F-1)Å] moves the cursor to the left. • Pushing [(F-2)] deletes the character. r Repeat this procedure until all desired characters have been selected. t Push [(MENU)Ä] to exit memory name edit mode. • The G4 display re-appears and the programmed memory name is displayed. [F-3] [F-1] [M-CH] [MANU] [F-2] [DISPLAY] Main dial G4 memory name G4 É F-3 [DEL] ÄÅÖ Ç ÄÅR Ç ÄÅRe Ç ÄÅRepeaterÖ Ç G4 Repeater É 59 É F-3 Ç F-3 Ç MENU Ä 7 MEMORY OPERATION ■ Memo pads The transceiver has a memo pad function to store frequency 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 initial set mode if desired (p. 80). Memo pads are convenient when you want to memorize a frequency and operating mode temporarily, such as when you find a DX station in a pile-up or when a station is busy for a long time and you want to temporarily search for other stations. Use the transceiver’s memo pads instead of relying on hastily scribbled notes that are easily misplaced. • Writing frequencies and operating modes into memo pads q Select the S1 display. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S1. w Push [(F-2)MPW] to program the frequency into a memo pad. When you write a 6th frequency and operating mode, the oldest written frequency and operating mode are automatically erased to make room for the new settings. [F-3] [F-2] [DISPLAY] [MANU] Displayed frequency and mode Push MPW USB F-2 NOTE: Each memo pad must have its own unique combination of frequency and operating mode; memo pads having identical settings cannot be written. USB Newest MP5 USB MP4 USB MP3 USB MP2 USB MP1 Oldest The oldest written frequency and mode are erased. • Calling up a frequency from a memo pad You can simply call up the desired frequency and operating mode of a memo pad by pushing [(F-3)MPR] in the S1 display. • Make sure S1 is selected in advance. • Both VFO and memory modes can be use. • The frequency and operating mode are called up, starting from the most recently written. When you call up a frequency and an operating mode from memo pads with [(F-3)MPR], the previously displayed frequency and operating mode are automatically stored in a temporary pad. The frequency and operating mode in the temporary pad can be recalled by pushing [(F-3)MPR] one or more times. MPR MEMO PADS F-3 USB USB MP5 USB MP4 USB VFO or MEMORY mode MP3 USB MPR F-3 USB MP2 MP1 NOTE: If you change the frequency or operating mode called up from a memo pad, the frequency and operating mode in the temporary pad are erased. 60 8 SCAN OPERATION ■ Scan types PROGRAMMED SCAN PRIORITY WATCH Repeatedly scans between two scan edge frequencies (scan edge memory channels 1A and 1B). Checks for signals on a memory while operating on a VFO frequency. Scan Scan edge 1A or 1B Scan edge 1B or 1A VFO frequency Memory channel Jump This scan operates in VFO mode. This scan operates in VFO mode. MEMORY SCAN SELECTED MEMORY SCAN Repeatedly scans all programmed memory channels. S (select) Mch 2 Mch 1 Mch 3 Mch 99 Mch 7 S (select) S (select) BLANK S (select) Mch 4 S (select) S (select) Repeatedly scans all selected memory channels. BLANK Mch 2 Mch 5 Mch 1 Mch 6 This scan operates in memory mode. Mch 3 Mch 4 S (select) S (select) Mch 99 Mch 7 S (select) S (select) Mch 5 Mch 6 This scan operates in memory mode. ■ Preparation • Channels For programmed scan: Program scan edge frequencies into scan edge memory channels 1A and 1B. (p. 57) For memory scan: Program 2 or more memory channels except scan edge memory channels. For memory select scan: Designate 2 or more memory channels as select memory channels—select a memory channel, then push [(F-2)SEL] in the S2 display (memory mode) to designate the channel as a select memory channel. For priority watch: Program 1 memory channel to be watched. • Scan resume ON/OFF You can select the scan to resume or cancel when detecting a signal, in initial set mode, item “27 SCAN RESUME”. Scan resume ON/OFF must be set before operating a scan. See p. 80 for ON/OFF setting and scan resume condition details. • Scan speed Scan speed can be selected from 2 levels, high or low, in initial set mode. See p. 80 for details. • Squelch condition SCAN STARTS WITH PROGRAMMED SCAN MEMORY SCANS PRIORITY WATCH The scan continues until it is stopped manually, and does not pause even if it detects signals. Scan pauses on each channel when the scan resume is ON; not applicable when OFF. SQUELCH OPEN This is not applicable when the scan resume is OFF and a programmable step (more than 1 kHz) is selected. Scan stops when detecting a signal. If you set scan resume ON in initial set mode, SQUELCH the scan pauses for 10 sec. when detecting a CLOSED signal, then resumes. When a signal disappears while scan is paused, scan resumes 2 sec. later. 61 SCAN OPERATION ■ Programmed scan operation q Select VFO mode. w Select the desired operating mode. • The operating mode can also be changed while scanning. e Set [SQL] open or closed. • See page a left for squelch condition. r Select S2. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S2. t Push [(F-1)SCN] to start the scan. • Decimal point blinks while scanning. [F-1] [MANU] [SQL] y When the scan detects a signal, the scan turns OFF, pauses or ignores it depending on the resume setting and the squelch condition. • During scan [TS] can be used only when resume is ON. u To cancel the scan push [(F-1)SCN]. [DISPLAY] USB S1 PO 20 40 60dB VFO A CH 10 Select VFO mode S2 SCN PRI V/M NOTE: If the same frequencies are programmed into the scan edge memory channels 1A and 1B, programmed scan does not start. F-1 then push [(F-1)SCN] ■ Memory scan operation q Select memory mode. w Close the squelch with [SQL]. e Select S2. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S2. r Push [(F-1)SCN] to start the scan. • Decimal point blinks while scanning. t When the scan detects a signal, the scan stops or pauses depending on the resume setting. y To cancel the scan push [(F-1)SCN]. [F-1] [MANU] [SQL] NOTE: Two or more memory channels must be programmed for memory scan to start. [DISPLAY] USB S1 PO 20 40 60dB 10 MEMO CH Select memory mode S2 SCN SEL V/M F-1 then push [(F-1)SCN] 62 8 SCAN OPERATION ■ Select memory scan operation q Select memory mode. w Close the squelch with [SQL]. e Select S2. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S2. r Push [(F-1)SCN] to start the memory scan. • Decimal point blinks while scanning. t Push [(F-2)SEL] to change the memory scan to se- lect memory scan. [F-1] [MANU] [F-2] [DISPLAY] [SQL] • Push [(F-2)SEL] for 2 sec. to clear all select memory channels. y When the scan detects a signal, the scan stops or pauses depending on the resume setting. u To cancel the scan push [(F-1)SCN]. NOTE: Two or more memory channels must be designated as select memory channels for select memory scan to start (see p. 61). Select memory mode USB S1 20 40 PO 60dB MEMO 10 CH S2 SCN SEL V/M F-1 Designate “S.” F-2 Push [(F-1)SCN], then [(F-2)SEL]. ■ Priority watch q Select VFO mode, then set a frequency. w Close the squelch with [SQL]. e Set the desired memory channel as the watching channel. r Select S2. • Push [DISPLAY] once or twice to select S. • Push [MENU] one or more times to select S2. t Push [(F-2)PRI] to start the priority watch. • Decimal point blinks while scanning. [SQL] [MANU] y When the scan detects a signal, the scan pauses for 10 sec. or until the signal disappears, depending on the resume setting. u To cancel the scan push [(F-2)PRI]. NOTE: The paused condition when detecting a signal differs depending on the scan resume condition. (p 80) resume on: pauses for 10 sec. resume off: pauses until the signal disappears. 63 [F-2] [DISPLAY] USB Select VFO mode S1 PO 20 40 60dB 10 VFO A CH S2 SCN PRI V/M F-2 Select watching channel Push [(F-2)PRI]. ANTENNA TUNER OPERATION ■ Antenna tuner operation D Internal antenna tuner The internal automatic antenna tuner matches the transceiver to the connected antenna automatically. Once the tuner matches an antenna, the latching relays combination are memorized as a preset point for each frequency range (100 kHz steps). Therefore, when you change the frequency range, the latching relays are automatically preset to the memorized combination. CAUTION: NEVER transmit with the tuner ON when no antenna is connected. This will damage the transceiver. Be careful of the antenna selection. D Tuner operation Push [TUNER] to turn the internal antenna tuner ON. The antenna is tuned automatically when the antenna SWR is higher than 1.5:1. • When the tuner is ON, the ‘TUNER’ indicator lights red. • MANUAL TUNING Push [TUNER] for 1 sec., to start manual tuning. • A side tone is emitted and ‘TUNER’ indicator blinks while tuning. • If the tuner cannot reduce the SWR to less than 1.5:1 after 20 sec. of tuning, the ‘TUNER’ indicator goes out. • PTT TUNER START The tuner is always tuned when the PTT is pushed after the frequency is changed (more than 1% from last-tuned frequency). This function removes the “push and hold [TUNER]” operation and activates for the first transmission on a new frequency. This function can be turned ON in initial set mode (p. 81). • TUNER RESET [POWER] [TUNER] TUNER Lights to indicate internal tuner is activated. NOTES: • The internal antenna tuner can tune the HF to 50 MHz bands. • NEVER transmit without an antenna properly connected to antenna port in use. • If the SWR is higher than about 1.5:1 when tuning above 100 kHz on an antenna’s preset point, push [TUNER] for 1 sec. to start manual tuning. • When strong impact is applied, the internal tuner may not work properly caused by the latching relay is off position. In this case, push [POWER] momentarily to reset the all latching relays while transceiver power is ON. [Y] [Z] q Make sure the transceiver power is OFF. w While pushing [Y] and [Z], push [POWER] to turn power ON. • “CLEAR ? OK” appears as shown below. e Rotate main dial to select tuner reset. CLEAR ? OK F 3 r Then Push [F-3] for 1 sec to start tuner resetting. • The memorized tuner settings are reset. D If the tuner cannot tune the antenna Check the following and try again: • the antenna connection and feedline. • the unaltered antenna SWR. (Less than 3:1 for HF bands; Less than 2.5:1 for 50 MHz band) • the power source voltage/capacity. If the tuner cannot reduce the SWR to less than 1.5:1 after checking the above, perform the following: • repeat manual tuning several times. • tune with a 50 Ω dummy load and re-tune the antenna. • turn power OFF and ON. • adjust the antenna cable length. (This is effective for higher frequencies in some cases.) • Some antennas, especially for low bands, have a narrow bandwidth. These antennas may not be tuned at the edge of their bandwidth, therefore, tune such an antenna as follows: 64 9 ANTENNA TUNER OPERATION D Optional external tuner operation The IC-703 automatically detects and selects an optional external tuner (AT-180/AH-4) when connected. In this case, the internal tuner switches to the through function. NOTE: When the connected power supply voltage is lower than 11.0 V, the transceiver automatically switches to the battery operating mode (power saving mode). In this case, the transceiver can not drive an external antenna tuner. NOTE: When connecting the optional antenna tuner AT-180, the IC-703’s output power must be set maximum (10 W) both in quick set mode and initial set mode. Otherwise, the AT-180 may not be tuned correctly. (AT-180’s minimum operating input power is 8 W.) D Optional AT-180 AUTOMATIC ANTENNA TUNER operation The AT-180 automatic antenna tuner matches the IC703 to the connected antenna automatically. Once the tuner matches an antenna, the variable capacitor 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. MANUAL TUNING During SSB operation on HF bands at low voice levels, the AT-180 may not be tuned correctly. In such cases, manual tuning is helpful. Push [TUNER] for 1 sec. to start manual tuning. • CW mode is selected, a side tone is emitted, and the [TUNER] light flashes; then, the previous mode is selected. CAUTION: NEVER transmit with the tuner ON when no antenna is connected. This will damage the transceiver. Be careful of the antenna selection. • The AT-180 can match both HF and 50 MHz bands. However, operation is different for the HF and 50 MHz bands. [TUNER] TUNER OPERATION • For the HF band: Push [TUNER] to turn the tuner ON. The antenna is tuned automatically during transmission when the antenna SWR is higher than 1.5:1. • When the tuner is OFF, the [TUNER] light goes out. TUNER [TUNER] Lights to indicate AT-180 is turned ON. • For the 50 MHz band: Push [TUNER] for 1 sec. to tune the antenna. If the [TUNER] light flashes slowly while transmitting, push and hold [TUNER] for 1 sec. again to re-tune the antenna. TUNER [TUNER] 65 Flashes to indicate re-tuning is necessary. Push and hold for 1 sec. to start manual tuning. If the tuner cannot reduce the SWR to less than 1.5:1 after 20 sec. of tuning, the [TUNER] light goes out. In this case, check the following: • the antenna connection and feedline • the antenna SWR (p. 55; meter function) Through inhibit (HF bands only) The AT-180 has a through inhibit condition. When selecting this condition, the tuner can be used at poor SWR’s. In this case, automatic tuning in the HF bands activates only when exceeding SWR 3:1. Therefore, manual tuning is necessary each time you change the frequency. Although termed “through inhibit,” the tuner will be “through” if the SWR is higher than 3:1 after tuning. CONVENIENT • Tuner sensitive condition (HF bands only) If you require critical tuning at any time during transmission, select the tuner sensitive condition. See p. 81 for selection. • Automatic tuner start (HF bands only) If you want to turn OFF the tuner under conditions of VSWR 1.5:1 or less, use “automatic tuner on” and turn the tuner OFF. See p. 81 for turning the function ON and OFF. ANTENNA TUNER OPERATION D Optional AH-4 AUTOMATIC ANTENNA TUNER operation The AH-4 matches the IC-703 to a long wire antenna more than 7 m/23 ft long (3.5 MHz and above). • See p. 16 for connection. • See the AH-4 instruction manual for AH-4 installation and antenna connection details. AH-4 operation Tuning is required for each frequency. Be sure to re-tune the antenna before transmitting when you change the frequency—even slightly. q Set the desired frequency in an HF band. AH-4 setting example: For mobile operation Optional AH-2b antenna element • The AH-4 will not operate on frequencies outside of ham bands. USB w Push [TUNER] for 1 sec. • The [TUNER] light flashes and “CW” appears while tuning. For outdoor operation Long wire RDANGER!: HIGH VOLTAGE! NEVER touch the antenna element while tuning or transmitting. [TUNER] Push [TUNER] for 1 sec. CW NEVER operate the AH-4 without an antenna wire. The tuner and transceiver will be damaged. NEVER operate the AH-4 when it is ungrounded. Transmitting before tuning may damage the transceiver. Note that the AH-4 cannot tune when using a 1⁄2 λ long wire or multiple of the operating frequency. e The [TUNER] light lights constantly when tuning is complete. • When the connected wire cannot be tuned, the [TUNER] light goes out, the AH-4 is bypassed and the antenna wire is connected to the antenna connector on the transceiver directly. CONVENIENT r To bypass the AH-4 manually, push [TUNER]. • PTT tune function The AH-4 is always tuned when the PTT is pushed after the frequency is changed (more than 1%). This function removes the “push and hold [TUNER]” operation and activates first transmission on the new frequency. This function is turned ON in initial set mode, item 34 (p. 81). 66 10 DATA COMMUNICATION ■ Connections for packet D When connecting to [DATA] socket SQ RX AUDIO t AF OUT DATA OUT r SQL PTT e PTTP TX AUDIO q DATA IN GND GND DATA TNC SIDE Rear panel RS-232C TU or TNC Personal computer D When connecting to [ACC] socket Rear panel [ACC] Rear panel view 4 3 2 1 8 7 6 5 12 11 10 9 13 TU or TNC MSEND (orenge) GND (red) SQL*1 (light green) AF in (pink) AF out (light blue) *1Connect SQL line when required. Personal computer Colors refer to connection to the supplied ACC cable. D When connecting to [MIC] connector Rear panel [MIC] Rear panel view ➂ AF out ➄ GND ➆ GND 67 TU or TNC Personal computer ➃ PTT ➅ MIC ➇ SQL 10 DATA COMMUNICATION ■ Packet (AFSK) operation Before operating packet (AFSK) be sure to consult the operating manual that came with your TNC. [AF] [TX] indicator [MODE] Main dial [Y] q Connect a TNC and PC as left page. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select SSB (LSB) mode (or select SSB-D mode). [Z] • After USB mode is selected, push [MODE] for 1 sec. to toggle between USB and LSB modes. • After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. • Generally, LSB is used on the HF bands and FM is used for the 50 MHz band. “USB” or “LSB” blinks when SSB-D mode is selected. LSB USB CW R RTTY AM WFM r Rotate [AF] to set audio to a comfortable listening level. t Rotate the main dial to tune a desired signal. S1 PO 20 40 60dB VFO A CH 10 M4 1/4 TON AGC • S-meter indicates received signal strength. y Transmit your AFSK signals using your computer’s keyboard. • The TX indicator lights red. NOTE: When connecting a TNC to the ACC socket on the rear panel, select SSB-D mode or disconnect the microphone and adjust ‘MIC GAIN’ to 0 in quick set mode. 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. D Frequency indication during AFSK operation When operating AFSK in SSB mode, the indicated frequency is the signals carrier point. • Example— SSB-D mode Mark freq.: 2125 Hz Shift freq.: 200 Hz 10 2325 Hz 200 Hz 2125 Hz Carrier point (Displayed frequency) 68 10 DATA COMMUNICATION D SSB-D mode selection q Push [MODE] one or more times to select RTTY mode. w Push [MODE] for 1 sec. to SSB-D mode. [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. OPERATING MODE SELECTION D Carrier point setting USB LSB CW Memory keyer set mode RTTY SSB-D FM AM Push MODE for 1 sec. QUICK SET MODE q Select SSB-D mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select “Q2 CAR SIDE,” then rotate the main dial to select “U” (USB mode) or “L” (LSB mode). [MODE] [MENU] 69 Push MODE momentarily [DISPLAY] Main dial DATA COMMUNICATION 10 D Adjusting the transmit signal from the TNC NOTE: For packet operation the transceiver can be set to one of two data speeds: 1200 bps or 9600 bps. Data speed is set in initial set mode (item “36 9600 MODE”; see p.81). [POWER] [MODE] Main dial [Y] q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON. • Initial set mode is selected and one of its items appears. [Z] [MENU] [LOCK] Main dial e Push [MENU] one or more times to select the item “36 9600 MODE.” • [M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to select the data speeds: 1200 bps or 9600 bps. t To exit initial set mode, push [POWER] for 1 sec. to turn power OFF. y Push [POWER] to turn power ON again. • The conditions selected in initial set mode are now effective. When setting data transmission speed to 9600 bps, the DATA signal coming from the TNC is applied exclusively to the internal limiter circuitry to automatically maintain bandwidth. NEVER apply data levels from the TNC of over 0.6 Vp-p, otherwise the transceiver will not be able to maintain the band width and may possibly interfere with other stations. NOTE: Read the instructions supplied with your TNC carefully before attempting packet operation with the IC-703. 1. When using a level meter or synchroscope, adjust the TX audio level (DATA IN level) from the TNC as follows. 0.4 Vp-p (0.2 Vrms): recommended level 0.2 Vp-p–0.5 Vp-p (0.1 Vrms–0.25 Vrms): acceptable level 2. When not using a measuring device. q Connect the IC-703 to a TNC. w Enter a test mode (“CAL”, etc.) on the TNC, then transmit some test data. e When the transceiver fails to transmit test data or transmits sporadically (TX indicator doesn’t appear or flashes): Decrease the TNC output level until the transmit indicator lights continuously. When transmission is not successful even though the TX indicator lights continuously: Increase the TNC output level. 10 70 11 CONTROL COMMAND ■ Remote jack (CI-V) information D CI-V connection example 9–15 V DC The transceiver can be connected through an optional CT-17 CI-V LEVEL CONVERTER to a personal computer equipped with an RS-232C port. The Icom Communication interface-V (CI-V) controls the following functions of the transceiver. Up to four Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 82 for setting the CI-V condition using initial set mode. Personal computer IC-703 D Data format The CI-V system can be operated using the following data formats. Data formats differ according to command numbers. A data area is added for some commands. End of message code (fixed) OK code (fixed) End of message code (fixed) NG code (fixed) Controller’s default address End of message code (fixed) FE FE 68 E0 FA FD Transceiver’s default address FD Preamble code (fixed) Data area BCD code data for frequency or memory number entry Command number (see table at right) Sub command number (see table at right) Transceiver’s default address Controller’s default address Preamble code (fixed) 71 Controller’s default address NG MESSAGE TO CONTROLLER IC-703 TO CONTROLLER FE FE E0 68 Cn Sc FE FE 68 E0 FB FD Transceiver’s default address FD Preamble code (fixed) Data area End of message code (fixed) Command number (see table at right) Sub command number (see table at right) Controller’s default address Transceiver’s default address Preamble code (fixed) FE FE 68 E0 Cn Sc OK MESSAGE TO CONTROLLER BCD code data for frequency or memory number entry CONTROLLER TO IC-703 CONTROL COMMAND 11 D Command table Command Sub command Description 00 — 01 Same as command 06 02 — Read band edge frequencies 03 — Read operating frequency 04 — Read operating mode 05 — Set operating frequency 06 00 01 02 03 04 05 07 08 Select LSB Select USB Select AM Select CW Select RTTY Select FM Select CW-R Select RTTY-R — 00 01 A0 B0 Select VFO mode Select VFO A Select VFO B Equalize VFO A and VFO B Exchange VFO A and VFO B 07 08 — 0001–0105* Send frequency data Command 14 Send mode data Sub command 15 01 02 11 12 13 Read squelch condition Read S-meter level Read RF power meter Read SWR meter Read ALC meter 16 02 Preamp (0=OFF; 1=preamp 1; 2=preamp 2) AGC selection (1=Fast; 2=Slow) Noise blanker (0=OFF; 1=ON) Noise reduction (0=OFF; 1=ON) Auto notch (0=OFF; 1=ON) Subaudible tone (0=OFF; 1=ON) Tone squelch (0=OFF; 1=ON) Speech compressor (0=OFF; 1=ON) Monitor (0=OFF; 1=ON) VOX function (0=OFF; 1=ON) Break-in (0=OFF; 1=semi breakin; 2=full break-in) 12 22 40 41 42 43 44 45 46 47 Select memory mode Select memory channel *1A=0100, 3b=0105 09 — Memory write 0A — Memory to VFO 0B — Memory clear 0E 00 01 Scan stop Programmed/memory scan start 0F 00 01 Turn the split function OFF Turn the split function ON 10 00 01 02 03 04 05 06 07 08 09 Select 10 Hz (1 Hz) tuning step Select 100 Hz tuning step Select 1 kHz tuning step Select 5 kHz tuning step Select 9 kHz tuning step Select 10 kHz tuning step Select 12.5 kHz tuning step Select 20 kHz tuning step Select 25 kHz tuning step Select 100 kHz tuning step 11 — Select/read attenuator (00=OFF, 20=ON (20 dB)) 0305 13 00 01 02 Announce with voice synthesizer (00=all data; 01=frequency and S-meter level; 02=operating mode) 0306 14 01 + Level data [AF] level setting (0=max. CCW to 255=max. CW) 02 + Level data [RF] level setting (0=max. CCW to 255=11 o’clock) 03 + Level data [SQL] level setting (0=11 o’clock to 255=max. CW) 04 + Level data [IF SHIFT] position setting (0=max. CCW; 128=center; 255=max. CW) 06 + Level data Noise reduction level setting (0=min. to 255=max.) 07 + Level data Twin PBT (inside) setting (0=max. CCW, 128=center, 255=max. CW) 08 + Level data Twin PBT (outside ) setting (0=max. CCW, 128=center, 255=max. CW) 09 + Level data CW pitch setting (0=300 Hz, 128=600 Hz, 255=900 Hz) Description 0A + Level data RF power setting (0=mini. to 255=max.) 0B + Level data Microphone gain setting (0=mini. to 255=max.) 0C + Level data Key speed setting (0=slow to 255=fast) 0E + Level data COMP Level setting (0=0 to 10=10) 0F + Level data Break-IN DELAY setting (20=2.0d to 130=13.0d) 19 00 Read the transceiver ID 1A 00 01 Send/read memory contents Send/read band stacking register contents (see p. 73 for details) Send/read memory keyer contents (see p. 73 for details) Send/read beep emission set (0=OFF, 1=ON) Send/read band edge beep set (0=OFF, 1=ON) Send/read beep output level set (0=min. to 255=max.) Send/read beep limit set (0=OFF, 1=ON) Send/read CW carrier point set (0=LSB, 1=USB) Send/read CW side tone level set (0=min. to 255=max.) Send/read CW side tone limit set (0=OFF, 1=ON) Send/read 9600 bps mode set (0=OFF, 1=ON) Send/read VOX gain set (0=min. to 255=max.) Send/read anti VOX gain set (0=min. to 255=max.) Send/read VOX delay time set (0=0 sec. to 20=2.0 sec.) Send/read meter selection (0=Power, 1=SWR, 3=ALC) Send/read SSB carrier frequency (00=–200 Hz to 40=200 Hz; 10 Hz steps) 02 0301 0302 0303 0304 0307 0308 0309 0310 0311 0312 0313 11 CW: Clockwise, CCW: Counter Clockwise 72 11 CONTROL COMMAND Command table (continued) Command 1A 1B 1C Sub command Description 0314 Send/read RTTY marker frequency (0=1275 Hz, 1=1615 Hz, 2=2125 Hz) 0315 Send/read RTTY shift width (0=170 Hz, 1=200 Hz, 2=425 Hz) 0316 Send/read RTTY keying polarity (0=Normal, 1=Reverse) 0317 Send/read noise blanker level (0=min. to 255=max.) 0318 Send/read key type (0=Normal, 1=Reverse, 2=Bug, 3=OFF, 4=Mic. [UP]/[DN]) 0319 Send/read CW keyer dot/dash ratio (28=1:1:2.8 to 45=1:1:4.5) 0320 Send/read CW keyer repeat time (01=1 sec. to 60=60 sec.) 0321 Send/read CW keyer transmission indication (0=Normal, 1=First 3character, 2= First 3-character+ contact number) 0322 Send/read contact number style (0=Normal, 1=190→ANO, 2=190→ANT, 3=90→NO, 4=90→NT) 0323 Send/read count up trigger channel (1=MK1, 2=MK2, 3=MK3) 0324 Send/read present number (1–999) 04 Send/read DATA mode (0=OFF, 1=ON) 00 01 Set/read repeater tone frequency Set/read TSQL tone frequency 00 Set/read the transceiver’s condition (0=Rx; 1=Tx) Set/read antenna tuner condition (0=OFF, 1=ON, 2=Start tuning or while tuning) 01 D Band stacking register To send or read the desired band stacking register’s contents, combined code of the frequency band and register codes as follows are used. For example, when sending/reading the contents in the 21 MHz band, the code “0701” is used. • Frequency band code Code Freq. band Frequency range (unit: MHz) 01 1.8 1.800000–1.999999 02 3.5 3.400000–4.099999 03 6.900000–7.499999 04 10 9.900000–10.499999 05 14 13.900000–14.499999 06 18 17.900000–18.499999 07 21 20.900000–21.499999 08 24 24.400000–25.099999 09 28 28.000000–29.999999 10 50 50.000000–54.000000 11 GENE Other than above 73 • Register code Code 01 Registered number D Codes for memory keyer contents To send or read the desired memory keyer contents, the channel and character codes as follows are used. • Channel code Code 01 02 03 Channel number MK1 MK2 MK3 • Character’s code Character ASCII code 0–9 30–39 A–Z 41–5A space 20 2F 3F 2C 2E 5E ✱ 2A Description Numerals Alphabetical characters Word space Symbol Symbol Symbol Symbol e.g., to send BT, enter ^4254 Inserts contact number (can be used for 1 channel only) D Codes for memory name contents To send or read the desired memory name settings, the character codes, instructed codes for memory keyer contents as above, and follows are additionally used. • Character’s code— Alphabetical characters Character ASCII code Character ASCII code a–z 61–7A — — • Character’s code— Symbols Character ’ ASCII code 21 24 26 3F 27 2B 3A 3D 3E 29 5D 7D 5F Character ¥ ” – – ASCII code 23 25 5C 22 60 2D 3B 3C 28 5B 7B 7C 7E SET MODE 12 ■ 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. • Quick set mode is selected and one of its items appears. • Quick set mode items vary depending on the selected operating mode (SSB, FM, etc.). [POWER] Main dial [Y] w Push [MENU] one or more times to select the desired item. [Z] • [M-CH] or [Y]/[Z] can also be used. e Rotate the main dial to set the values or conditions for the selected item. r Repeat steps w and e to set other items. t To exit quick set mode, push [DISPLAY] momentarily. [M-CH] [MENU] [DISPLAY] [DISPLAY EXAMPLE: QUICK SET MODE] USB S1 PO 20 40 Value or condition 60dB 10 Q1 RF POWER Item Item number D Initial set mode operation q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON. [POWER] Main dial [Y] • Initial set mode is selected and one of its items appears. 12 e Push [MENU] one or more times to select the desired item. [Z] • [M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to set the values or conditions for the selected item. t Repeat steps e and r to set other items. y To exit initial set mode, push [POWER] for 1 sec. to turn power OFF. u Push [POWER] to turn power ON again. 11 [M-CH] [MENU] [LOCK] [DISPLAY EXAMPLE: INITIAL SET MODE] • The conditions selected in initial set mode are now effective. Value or condition 1 MAX POWSET Item Item number 74 12 SET MODE ■ Quick set mode items Mode Set mode item Default setting SSB Q1 RF POWER Q2 MIC GAIN Q3 CARRIER Frq CW Q1 RF POWER Q2 KEY SPEED Q3 CW REV Q1 RF POWER 5 level 0 [Hz] 20 [WPM] n (normal) Mode Set mode item RTTY Q1 RF POWER Q2 RTTY REV n (normal) SSB-D Q1 RF POWER Q2 CAR SIDE L (LSB side) FM/AM Q1 RF POWER Q2 MIC GAIN 5 level (all modes) The default is H (maximum power). This item adjusts the RF output power. The RF output power can be adjusted from L, 1 to 9 and H for indication, however, it can be adjusted continuously. Q2 MIC GAIN Note that while adjusting the output power, the power meter is displayed automatically. (SSB/AM/FM modes) The default is 5. This item adjusts microphone gain from 1 to 10 for indication, however, it can be adjusted continuously. Q2 KEY SPEED Q3 CARRIER Frq RTTY The default is normal. LSB The default is LSB mode. (SSB mode) This item adjusts the carrier frequency (BFO frequency), allowing you to change the audio characteristics. Selectable values are –200 to +200 Hz in 10 Hz steps. USB The default is 0 Hz. (CW mode) This item selects CW or CWå (CW reverse) mode. 75 The default is 20 wpm. (SSB-D mode) This item selects the carrier point. USB mode or LSB mode are selectable. Q3 CW REV CW (RTTY mode) This item selects RTTY or åRTTY (RTTY reverse) mode. Q2 CAR SIDE Note that while adjusting mic gain, the ALC meter is displayed automatically. (CW mode) This item adjusts the CW key speed. The key speed can be selected from 6 to 60 wpm. Q2 RTTY REV Default setting CW The default is normal. SET MODE 12 ■ Initial set mode items 1 MAX POWSET (Max. output power setting) This item selects maximum output power. The max. power is can be set 10, 5, 2.5, 1 or 0.5 W. 2 PoSAVE MODE The default is 10 W. (Power save setting) The power save mode reduces the current drain to conserve battery power. This function is convenience for battery operation. AUTO : The power save function starts in 1:1 (200 msec.:200 msec.) ratio when no signal is received for 5 sec., then the ratio becomes in 1:4 (200 msec.:800 msec.) and 1:8 (200 msec.:1600 msec.) after no signal is received every 60 sec. are past. (1 :) 1, 4, 8, 16: The power save function activates selected ratio. oFF : The power save function does not activate. 3 SIMPLE MODE The default is OFF. (Simple mode setting) This item select the simple mode and normal mode. on : Simple mode is selected. (*) marked items in initial set mode are hidden, and push [DISPLAY] to select Main menu or Sub menu only, Graphic menu also hidden. oFF : Normal mode is selected. Simple mode ON Simple mode OFF (default) 4 MODE SELECT (Mode Availavility) This item is available in all modes, and allows you to simplify operation by inhibiting the selection of unneeded operating modes during normal operation. For example if you are operating mobile and only plan on using FM and AM modes, use “4 MODE SELECT” to inhibit access to all other modes (SSB, CW, RTTY), thereby making selection of AM or FM quick and easy. * 5 MODE POWSET The default is on for all operating modes. To toggle an operating mode on or off, push (or push and hold) [MODE] one or more times until the desired mode is displayed, then rotate the main dial to set on or off. 12 (Output power setting for modes) This item allows you to set the output power for each operating mode. on : Output power can be set for each mode groups. oFF: Same output power for every mode. The default is OFF. The mode groups are separated ‘SSB-D/USB/LSB,’ ‘CW’ and ‘RTTY/AM/FM.’ When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. 76 12 SET MODE 6 BEEP (Confirmation beeps) A beep sounds each time a switch is pushed to confirm it. This function can be turned OFF for silent operation. Confirmation beep ON (default) Confirmation beep OFF Band beep ON (default) Band beep OFF * 7 BAND BEEP (Band edges beep) A beep sounds when an operating frequency enters or exits a transmit frequency range. This functions independent of the confirmation beep setting (above). 8 BEEP LEVEL (Beep level adjustment) When “6 BEEP” is set ON, this item adjust the confirmation beep level. Adjustable levels are 0 to 10 in 1 steps. * 9 BEEP LIMIT The default is 5. (Beep audio level limit) This item allows you to set a maximum volume level for confirmation beep tones. Confirmation beep tones are linked to the [AF] control until a specified volume level is reached— further rotation of the [AF] control will not increase the volume of the beep tones. * 10 CW NOR SIDE Beep limit ON (default) Beep limit OFF (CW carrier point setting) This item select the carrier point of CW mode from LSB and USB. The carrier point is LSB side (default). 11 SID-T LEVEL (CW side tone level) This item sets the CW side tone output level. Selectable levels are 0 to10 in 1 steps. * 12 SID-T LIMIT The default is 5. (CW side tone level limit) This item sets the CW side tone level limit. When the [AF] control is rotated above a specified level, the CW side tone does not increase. CW side tone limit ON (default) on : CW side tone level is limited. (default) oFF : CW side tone level is not limited. 77 The carrier point is USB side. When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. CW side tone limit OFF SET MODE * 13 SYNC TUNING 12 (SSB/CW frequency shift setting) This item selects the displayed frequency shift function from ON and OFF. When this function is activated, the receiving signal can be kept in receive even when the operating mode is changed between SSB and CW. oN : The displayed frequency shifts when the operating mode is changed between SSB and CW. oFF: The displayed frequency does not shift. (default) 14 BACK LIGHT Synchronous tuning ON Synchronous tuning OFF (default) The frequency shifting value may differ according to the CW pitch setting. (Display backlighting) The function display backlighting can be set to high, low or OFF to suit ambient lighting. 15 KEY LIGHT Display backlighting set to high (default). Display backlighting set to low. Key/switch backlighting set to high (default). Key/switch backlighting set to low. (Key/switch backlighting) The key/switch backlighting can be set to high, low or OFF to suit ambient lighting. * 16 LIGHT TIMER (Light timer setting) The Light timer can be set to AUTO, ON or OFF to suit lighting condition. Default is Auto. Auto: Automatically select “on” or “oFF” depends on power supply voltage. (default) on : Lights when some operation is performed, goes out after 5 sec. oFF : Lights continuously during transceiver power is ON. 12 17 LED BRIGHT (LED brightness) The LED brightness control for front panel can be set to high or low. * 18 AUTO OFF LED brightness set to high. LED brightness set to low (default). Auto power OFF deactivates. (default) Auto power OFF set to 20 min. (Automatic power OFF) The auto power OFF function can be used to automatically turn the transceiver OFF after a specified time of operation. This item can be set to 30 min., 60 min., 90 min., 120 min., or OFF. When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. 78 12 SET MODE 19 CURRENT IP (Current intercept point) This item set the control of current intercept point for power saving. Default is Auto. Auto: Automatically select “on” or “oFF” depends on power supply voltage. (default) on : Power saving mode continuously. oFF : Priority to intercept point. * 20 RF/SQL (RF gain/squelch control) The [RF/SQL] control can be set as the squelch control (default), the RF/squelch control (USA version default) or automatic (acts as squelch in FM/AM modes; as RF in SSB/CW/RTTY modes). (See p. 24) The [RF/SQL] control functions as RF gain and squlch control for all modes. The [RF/SQL] control functions as squelch control only. * 21 SUB DIAL (Sub dial setting) When this item is set to “rit,” pushing [RIT/SUB] turns the RIT function ON (lights red)—rotating [M-CH] changes the RIT frequency; when this item is set to “FrEq,” pushing [RIT/SUB] turns the sub dial function ON (lights green)—rotating [M-CH] changes the operating frequency. Note that in FM and AM modes, pushing [RIT/SUB] always selects the sub dial function (lights green), regardless of this setting. 22 OPT. FIL Pushing [RIT/SUB] selects the sub dial function. No filters are selected (default). FL-52A (for CW narrow filter) is selected. (Optional filter selection) When an optional filter is installed, this selection is necessary, otherwise the filters cannot be selected. Selections available are FL-52A, FL-53A, FL-222, FL257 and none (default). See p. 49 for usable filters for each mode and see p. 87 for filter installation. * 23 PEAK HOLD 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 activated segment of the meter remains visible for 0.5 sec.; when OFF, the meter functions normally. * 24 QUICK SPLIT Peak hold ON (default) Peak hold OFF Quick split function ON (default). Quick split function OFF. (Quick split function) When this item is set to ON, pushing [(F-1)SPL] for 1 sec. in the M1 display sets the undisplayed VFO frequency to the displayed VFO frequency plus the split offset, and activates split operation. 79 Pushing [RIT/SUB] selects the RIT function (default). When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. SET MODE * 25 SPLIT LOCK (Split lock function) When this item is ON, the main dial can be used to adjust the transmit frequency while pushing [(F-3)XFC] even when the lock function is activated. 26 SPL OFFSET 12 Split lock function OFF (default) Split lock function ON (Split offset frequency) This item sets the offset (difference between transmit and receive frequencies) for the quick split function. Available offset frequencies are –9.999 to 9.999 MHz in 0.001 MHz (1kHz) steps. 27 SCAN RESUME Default is 0.000 MHz. (Scan resume condition) This item sets the scan resume function ON or OFF. on : Scan resumes 10 sec. after stopping on a signal (or 2 sec. after a signal disappears); oFF: Scan does not resume after stopping on a signal. For the priority watch, setting to OFF pauses the watch until signal disappears and scan resumes. Scan resume function is turned ON (default). Scan resume function is turned OFF. Scan speed is set to high (default). Scan speed is set to low. Up/down speed is set to high (default). Up/down speed is set to low. Noise blanker is available on AM mode. (default) Noise blanker is not available on AM mode. 5 memo pads are available (default). 10 memo pads are available. 28 SCAN SPEED (Scanning speed) This item sets the rate at which channels or frequencies are scanned during scan operations. High or low can be selected. 29 U/D SPEED ([UP]/[DN] speed) This item sets the rate at which frequencies are scanned through when the [UP]/[DN] switches of the microphone are pushed and held. High or low can be selected. 12 * 30 AM NB (Noise blanker in AM mode) When this item is set to ON, the noise blanker function is available in AM mode. This is useful when communicating in AM mode (the noise blanker function should not be used when listening to regular AM broadcasts as it may degrade the received audio). 31 PAD CH (Available memo pads) This item sets the number of memo pad channels available. 5 or 10 memo pads can be selected. When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. 80 12 SET MODE 32 PWR ON CHK (Power on check function) This item selects the indication ON or OFF when turning power ON. on : The Transceiver briefly displays ‘All indication,’ ‘RF power’ and ‘Power supply voltage’ when turning power ON. oFF: The display goes directly to frequency indication at power ON. Power on check ON (default) Power on check OFF * 33 A-TUNE STRT (Auto tune start function) The optional AT-180 ANTENNA TUNER has an automatic start capability which starts tuning if the SWR is higher than 1.5–3. oFF: The tuner remains OFF even when the SWR is poor (1.5–3). on : Automatic tune starts even when the tuner is turned OFF. Auto tune function OFF (default). Auto tune function ON. NOTE: Even when “on” is selected, automatic tune does not start for the 50 MHz band. * 34 PTT TUNE (PTT tune function) This item set the PTT tuner start function ON or OFF. This function activates internal tuner and optional AT180/AH-4 ANTENNA TUNER, when connected. on : The tuner is always tuned when the PTT is pushed after the frequency is changed (more than 1% from last-tuned frequency). (Internal tuner or connected AT-180) Tuning can be started automatically at the moment the PTT is pushed. (Connected AH-4) oFF : PTT tuner start function OFF. * 35 TUNER SW Tuning starts when pushing Tuning starts only when [TUNER] is pushed (default). [PTT] on a new frequency. (Tuner switch condition) This item select BAND or ALL. bAnd : [TUNER] switch ON/OFF condition is remained for each band. ALL : [TUNER] switch ON/OFF condition is commonly remained for all band. The default is BAND. 36 9600 MODE (Packet data speed) This item is used to change the communications speed for packet operation. The data socket speed can be set to 1200 or 9600 baud. 81 Default is 9600 baud. When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. SET MODE 37 SPEECH LANG (Voice synthesizer language) When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select between English and Japanese as the language. 38 SPEECH SPD 40 CI-V ADDRES Speech speed is slower. Voice synthesizer reads out Voice synthesizer reads both the frequency/mode out the frequency/mode and S-meter level (default). only. Address set to 68H (default). Address set to 7FH. Auto baud rate (default) 19200 bps Transceive ON (default) Transceive OFF (CI-V data transffer rate) This item sets the data transfer rate. When “Auto” is selected, the baud rate is automatically set according to the connected controller or remote controller. 12 (CI-V transceive) Transceiver operation is possible with the IC-703 connected to other Icom HF transceivers or receivers. When “on” is selected, changing the frequency, operating mode, etc. on the IC-703 automatically changes those of connected transceivers (or receivers) and vice versa. * 43 CI-V 731 Speech speed is faster (default). (CI-V address setting) To distinguish equipment, each CI-V transceiver has its own Icom standard address in hexadecimal code. The IC-703’s address is 68H. When 2 or more IC-703’s are connected to an optional CT-17 CI-V LEVEL CONVERTER, rotate the main dial to select a different address for each IC-703 in the range 01H to 7FH. * 42 CI-V TRN Voice synthesizer functions in Japanese. (S-meter level speech) When an optional UT-102 SPEECH SYNTHESIZER UNIT is installed, the synthesizer can be set to read out the frequency/mode only, or both the frequency/mode and S-meter level. * 41 CI-V BAUD Voice synthesizer functions in English (default). (Voice synthesizer speed) When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select the speech speed of synthesizer output between faster or slower. 39 S-LVL SPCH 12 (CI-V operating frequency data length) When connecting the IC-703 to the IC-735 for transceiver operation, you must change the operating frequency data length to 4 bytes. • This item MUST be set to “on” only when operating transceiver with the IC-735. Frequency data set to 5 bytes (default). When “3 SIMPLE MODE” is set to ON, * marked items are undisplayed. Frequency data set to 4 bytes. 82 13 MAINTENANCE ■ Fuse replacement If a fuse blows or the transceiver stops functioning, try to find the source of the problem, and replace the damaged fuse with a new, rated fuse. CAUTION: Disconnect the DC power cable from the transceiver when changing a fuse. DC POWER CABLE FUSE REPLACEMENT 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 all units in the IC-703, except for the power amplifier, through the circuitry fuse. This fuse is installed in the PA unit. Fuse ■ Memory backup All of the CPU’s memory is backed up by an EEPROM (Electronically-Erasable Programmable ReadOnly Memory). All data you set, such as VFO, memory, set mode contents, etc. is stored in this EEPROM. There is no internal lithium battery. ■ Cleaning If the transceiver becomes dusty or dirty, wipe it clean with a dry, soft cloth. 83 AVOID the use of strong chemical solvents such as thinner, benzine or alcohol to clean the transceiver. These may damage the transceiver’s surfaces. TROUBLESHOOTING The following chart is designed to help you correct problems which are not equipment malfunctions. POWER SUPPLY PROBLEM Power does not come on when the [POWER] switch is pushed. If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your nearest Icom Dealer or Service Center. POSSIBLE CAUSE DC power connected. cable is 14 improperly Fuse is blown. SOLUTION Reconnect the power cable correctly. REF. p. 15 Check for the cause, then replace the p. 83 fuse with a spare one. (Fuses are installed in two places. One is installed in the DC power cable and the other is installed in the PA unit. No sound comes from the speaker. RECEIVE Sensitivity is low. Receive audio is distorted. Receive signal is distorted with strong signals. Battery is exhausted if you are using a 12 V battery as the power source. Check the battery voltage with the [POWER] pushed IN. Volume level is set too low. Rotate [AF] clockwise to obtain a suit- pgs. 1, 17, 23 able listening level. The squelch is closed. Rotate [SQL] counterclockwise to pgs. 1, 17, 24 open the squelch. The transceiver is in the transmitting condition. Release [PTT] on the microphone or — check the SEND line of an external unit, if connected. An external speaker or headphones are connected. Check the external speaker or head- p. 14 phone plug connection. The antenna is not connected properly. Reconnect to the antenna connector. — The antenna feed line is cut or shorted. Check the feed line and correct any improper conditions. — The antenna is not properly tuned. Push [TUNE] to manually tune the pgs. antenna. 64– 66 The attenuator function is activated. Push [ATT] to turn the function OFF. p. 46 The operating mode is not selected correctly. Select a suitable operating mode. p. 23 The [SHIFT] control is set off-center. Set [SHIFT] to the center position. p. 47 Noise blanker function is activated. Push [(F-2)NB] in the M3 display to p. 48 turn the function OFF. Preamp is activated. — 13 14 Push [P.AMP] to turn the function p. 46 OFF. 84 14 TROUBLESHOOTING SCAN DISPLAY TRANSMIT PROBLEM 85 POSSIBLE CAUSE SOLUTION REF. Transmitting is impossible. The operating frequency is not set to a ham band. Set the frequency to a ham band. Output power is too low. Power is set to a lower power than maximum. Set the output power in quick set pgs. 25, 26 mode/initial set mode. Microphone gain is set too low. Set microphone gain to a suitable p. 26 position using quick set mode. The antenna is not connected properly. Reconnect the antenna connector. — The antenna feed line is cut or shorted. Check the feed line and correct any improper conditions. — The antenna is not properly tuned. Push [TUNE] to manually tune the pgs. 64–66 antenna. The transceiver turning ON the battery operating mode. Check the battery voltage with the pgs. 1, 25 [POWER] pushed IN. No contact possible with other stations. RIT function is activated. Push [RIT] to turn the function OFF. Split function is activated. Push [(F-1)SPL] in the M1 display to turn p. 51 the function OFF. Repeater cannot be accessed. Split function is not activated. Push [(F-1)SPL] in the M1 display to p. 51 turn the function ON. An incorrect transmit frequency is set. Set the proper frequencies into VFO p. 19 A and B or into one of the memory channels. Subaudible tone encoder is OFF and repeater requires a tone for access. Use [(F-2)TON] in the M4 display to se- p. 45 lect FM-T. Programmed subaudible tone frequency is wrong. Program the required frequency using p. 44 FM tone set mode. Transmitted signals are distorted. Microphone gain is set too high. Set gain in quick set mode. The compression level is set too high with the speech compressor ON. Set compression level to a suitable p. 54 position. Displayed frequency does not change properly. The dial lock function is activated. Push [LOCK] to deactivate the func- p. 25 tion. The internal CPU has malfunctioned. Reset the CPU. p. 19 p. 47 p. 26 p. 17 (While pushing [UP] and [DN] push [POWER] to turn power ON. p. 24 Programmed scan does not stop. Squelch is open. Set squelch to the threshold position. Programmed scan does not start. The same frequencies have been programmed in scan edge memory channels. Programm different frequencies into p. 62 scan edge memory channels. Memory scan does not start. 2 or more memory channels have not been programmed. Program 2 or more memory chan- p. 62 nels. Memory select does not start. 2 or more memory channels have not been designated as select channels. Designate 2 or more memory chan- p. 63 nels as select channels for the scan. scan OPTION UNIT INSTALLATIONS AND SETTINGS ■ Opening the transceiver case To remove the transceiver case unscrew the 18 screws (5 in the top panel, 5 in the bottom panel, 8 in the side panels: 4 pieces each) as shown in the diagram below. 15 Caution: Disconnect the DC power cable from the transceiver before performing any work on the transceiver. Top cover Speaker cable Bottom cover ■ UT-102 VOICE SYNTHESIZER UNIT The UT-102 announces the accessed band’s frequency, mode, etc. (S-meter level can also be announced—p. 82) in a clear, electronically generated voice, in English (or Japanese). UT-102 R7205 q Remove the top cover as shown above. w Connect the UT-102 as shown in the diagram at right (label side up). e Replace the top cover. D Operation q Select the desired announcing condition, such as speed, language, contents, in initial set mode. (p. 82) w Push [LOCK] for 1 sec. (until “zero” is announced) to announces the selected contents. 14 MAIN unit 15 ✔ Adjusting the announcing audio level ➥ Adjust the R7205 on the MAIN unit . [LOCK] 86 15 OPTION UNIT INSTALLATIONS AND SETTINGS ■ IF filter Several IF filters are available for the IC-703. Choose a filter most appropriate to your operating needs. r Install the desired filter as shown in the diagram below. NOTE: After filter installation, specify the installed filter using initial set mode (item 22, p.79). Otherwise, the installed filter will not function properly. FL-52A CW/RTTY NARROW FILTER FL-53A CW NARROW FILTER FL-222 SSB NARROW FILTER FL-257 SSB WIDE FILTER Optional IF filter 500 Hz/–6 dB 250 Hz/–6 dB 1.8 kHz/–6 dB 3.3 kHz/–6 dB q Remove the top cover as shown on the previous page. w Disconnect the coaxial cable connectors, P2 and P4, then unscrew 10 screws on the MAIN unit. • Attach the grounding spring at the same place when returning. Flat washers t Tighten the nuts then solder the filter’s pins. y Return the MAIN unit to the original position. e Slide the MAIN unit in the direction of the arrow q, then open the MAIN unit in the direction of the arrow w. • Be careful for the flat cables. Nuts Front side Grounding spring Soldering points • Make sure to attach the grounding spring to the original position. u Connect P2 and P4 to J2 and J1, respectively. i Replace the top cover. Red belt Rear side 87 Flat cable P2 (J2) P4 (J1) OPTION UNIT INSTALLATIONS AND SETTINGS 15 ■ 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) and plug it into J1 of the UT-106. Front side P1 (UT-106) UT-106 J2451 J2451 J3 Flat cable J1 Front side MAIN unit (top side) P2451 Main CPU shielding case J2453 P2451 e Plug the 4-pin connector (P1) from the UT-106 into J2451 on the MAIN unit. r Plug the supplied flat cable into J3 on the UT-106 and J2453 on the MAIN unit. • Be careful of the orientation of the flat cable. t Attach the UT-106 to the main CPU shielding case, using the existing guide for alignment, as illustrated at right above y Reassemble the transceiver. ■ MB-72 CARRYING HANDLE The optional MB-72 CARRYING HANDLE is convenient when carrying the transceiver for DX’peditions, field operation, etc. q Tighten the supplied screws plus rubber feet as shown below. Rubber feet w Attach the MB-72 to the left side of the transceiver as shown below. Carrying handle 15 88 15 OPTION UNIT INSTALLATIONS AND SETTINGS ■ 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 according to the table below. SW Position Operation The tuner operating condition is set by S2 (default) described below. • AT-180 inside top cover THROUGH INHIBIT The tuner tunes the antenna even when the antenna has poor SWR (up to VSWR 3:1 after tuning). In this case, manual tuning is necessary each time you change the frequency although the tuner automatically starts tuning when the VSWR is higher than 3:1. This setting is called “through inhibit,” however, the tuner is set to “through” if the VSWR is higher than 3:1 after tuning. TUNER SENSITIVE CONDITION The tuner tunes each time you transmit (except SSB mode). Therefore, the lowest SWR is obtained at any given time. For SSB mode, the same condition as the “D” position. S2 S1 S2 S1 D C B A NORMAL CONDITION The tuner tunes when the SWR is higher (default) than 1.5:1. Therefore, the tuner activates only when tuning is necessary. • Specifications for the AT-180 • Frequency coverage • Input impedance • Maximum input power • Minimum tuning power • Matching impedance range • Tuning accuracy • Insertion loss : 1.9 – 54 MHz : 50 Ω : 120 W : 16.7–150 Ω (HF band) 20–125 Ω (50 MHz band) : Less than SWR 1.5:1 : Less than 1.0 dB : 13.8 V DC/1 A (supplied from the transceiver’s ACC socket) : 167(W) × 58.6(H) × 225(D) 69⁄16(W) × 25⁄17(H) × 87⁄8(D) • Weight : 2.4 kg; 5 lb 4 oz • Supplied accessories : coaxial cable (1 m), ACC cable (DIN 13 pins) 89 ACC 2 :8W (after tuning) • Power supply requirements • Dimensions (mm/in) • Connector information for ACC(2) socket PIN NO./ NAME DESCRIPTION q8 V Regulated 8 V output. (10 mA max.) w GND Connects to ground. e SEND Input/output pin. Goes to ground when transmitting (20 mA max). When grounded, transmits. r BAND Band voltage output. (Varies with amateur band; 0 to 8.0 V). t ALC ALC output voltage (–4 to 0 V). y NC No connection. u 13.8V 13.8 V output when power is ON (1 A max). SPECIFICATIONS ■ General • Frequency coverage : Receive 30 kHz – 60.00000 MHz* Transmit 1.800 – 1.99999 MHz* 3.500 – 3.9999 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* *Depending on version. • Mode : SSB, CW, AM, FM, RTTY • Number of memory : 105 (split memory: 99; scan edges: 6) channels • Antenna connector : SO-239 /50 Ω • Usable temperature : –10°C to +60°C (+14°F to +140°F) range • Frequency stability : Less than ± 0.5 ppm (0°C to + 50°C; + 32°F to +122°F). • Power supply : 9–15.87 V DC (negative ground) requirement • Current drain Transmit 2.0 A typ. (TX 5 W at 9.6 V DC) 3.0 A typ. (TX 10 W at 13.8 V DC) Receive squelched 300 mA typ. (at 9.6 V DC) max. audio 450 mA typ. (at 9.6 V DC) 1.2 A (at 13.8V DC) • Dimensions : 167(W) × 58(H) × 200(D) mm, (projections not included) 69⁄16(W) × 25⁄16(H) × 77⁄8(D) in • Weight : 2.0 kg (4 lb 4 oz) • CI-V connector : 2-conductor 3.5 (d) mm (1⁄8˝) • ACC connector : 13-pin ■ Transmitter • Output power SSB, CW, FM, RTTY 0.1–5 W (at 9.6 V DC) 0.1–10 W (at 13.8 V DC) AM 0.1–2 W (at 9.6 V DC) 0.1–4 W (at 13.8 V DC) • Modulation system : SSB Balanced modulation AM Low level modulation FM Variable reactance modulation • Spurious emissions : Less than – 60 dB* 16 ■ Receiver • Receive system : Double-conversion superheterodyne • Intermediate frequencies: 1st 64.455 MHz 2nd 455 kHz • Sensitivity at pre-amp ON (typical): Frequency range SSB/CW/RTTY AM FM 10 dB S/N 10 dB S/N 12 dB SINAD 0.5–1.8 MHz — 13 µV — 0.16 µV 2.0 µV 0.13 µV 1.0 µV 1.8–28 MHz 28–29.7 MHz 50–54 MHz — 0.5 µV 0.25 µV • Squelch sensitivity (threshold; preamp ON) : SSB/CW/RTTY/AM Less than 5.6 µV FM Less than 0.32 µV • Selectivity* (typical) : SSB/CW More than 2.4 kHz/–6 dB Less than 4.0 kHz/–60 dB AM/FM-N More than 9.0 kHz/–6 dB Less than 20.0 kHz/–50 dB FM More than 15.0 kHz/–6 dB Less than 30.0 kHz/–50 dB *Without optional filter and with mid band selected. • Spurious and image rejection ratio: HF bands More than 70 dB 50 MHz band More than 65 dB (except IF through) • Audio output power : More than 0.5 W at 10% distortion with an 8 Ω load (at 9.6 V DC) More than 1.0 W at 10% distortion with an 8 Ω load (at 13.8 V DC) • RIT variable range : ±9.99 kHz max. • PHONES connector : 3-conductor 3.5 (d) mm (1⁄8˝)/8 Ω • EXT SP connector : 2-conductor 3.5 (d) mm (1⁄8˝)/8 Ω ■ Antenna tuner • Matching impedance range: HF bands 16.7 to 150 Ω unbalanced (Less than VSWR 3:1) 50 MHz band 20 to 125 Ω unbalanced (Less than VSWR 2.5:1) • Tuning accuracy • Insertion loss : VSWR 1.5:1 or less : Less than 1.0 dB (after tuning) *spurious freq.: below 30 MHz: –50 dB; above 50 MHz: –60 dB • Carrier suppression • Unwanted sideband • Microphone connector • KEY connector : More than 40 dB : More than 50 dB : 8-pin modular jack (600 Ω) 15 : 3-conductor 6.35 (d) mm (1⁄4") 16 90 17 OPTIONS AT-180 HF/50 MHz AUTOMATIC ANTENNA TUNER AH-4 HF AUTOMATIC ANTENNA AH-2b ANTENNA ELEMENT TUNER A 2.5 m long antenna element for mobile operation with the AH-4. • Frequency coverage 7–54 MHz band with the AH-4 Fully automatic antenna tuner with preset memories for each 100 kHz. Unique “automatic tuner on” function is available. See p. 89 for AT-180 specifications. Specially designed to tune a long wire antenna for portable or mobile HF/50 MHz operation. The “PTT tune” function provides simple operation. • Input power rating: 150 W Optional filters HM-103 HAND MICROPHONE SM-20 DESKTOP MICROPHONE Standard hand microphone. Includes [UP]/[DOWN] switches and a low cut function. The OPC-589 is necessary to use this microphone. SP-7 EXTERNAL SPEAKER SP-10 EXTERNAL SPEAKER For remote transceiver control using a personal computer equipped with an RS-232C port. You can change frequencies, operating mode, memory channels, etc., via your computer. Compact speaker for base station operation. Height can be adjusted for your convenience. • Input impedance: 8 Ω • Max. input power: 5 W External speakers suitable for mobile operation. SP-12: Slim-type; 8 Ω/3 W SP-10: Compact-type; 4 Ω/5 W UT-102 VOICE SYNTHESIZER UNIT MB-62 MB-63 MOUNTING BRACKET FL-52A CW/RTTY NARROW FILTER (500 Hz/–6 dB) FL-53A CW NARROW FILTER (250 Hz/–6 dB) FL-222 SSB NARROW FILTER (1.8 kHz/–6 dB) FL-257 SSB WIDE FILTER (3.3 kHz/–6 dB) CT-17 CI-V LEVEL CONVERTER UNIT MOBILE MOUNTING BRACKET Announces the receive frequency, mode and S-meter level in a clear, electronicallygenerated voice in English (or Japanese). 91 Mounts the transceiver main body, with or without the front panel, inside a vehicle. Metal plate for attaching the front panel to a wall or other such flat surface. OPTIONS MB-65 MOUNTING BASE MB-72 CARRYING HANDLE 17 OPC-581/587 SEPARATION CABLE Allows you to conveniently vehicle-mount the front panel of the IC-703. An MB-63 must be used in combination with the MB65. Convenient when carrying the transceiver. Provide front panel detached operation for mobile installations or compact transceiver operation. • OPC-581: 3.5 m (11.5 ft) • OPC-587: 5 m (16.4 ft) OPC-589 OPC-598 ACC 13-PIN CABLE OPC-599 ADAPTOR CABLE Conversion between 8-pin modular and 8pin metal connector for using a desktop microphone with the IC-703. Required when using the AT-180. 13-pin, ACC connector to 7-pin + 8-pin ACC connector. UT-106 DSP RECEIVER PS-125 DC POWER SUPPLY LC-156 MICROPHONE ADAPTOR CABLE MULTI-BAG (with controller case) Provides AF DSP functions such as noise reduction and auto notch. Built-in to some versions. Light weight switching regulator power supply. The OPC-1248 is necessary to use this power supply. • Output voltage: 13.8 V • Max. current drain: 25 A BP-228 Ni-Cd BATTERY PACK (9.6 V, 2800 mAh) Provides outdoor operation (max. output power 5 W). OPC-1248 DC POWER ADAPTOR CABLE Provides to connect PS-125. Connects 3-pin DC cable (OPC-1229) to 6-pin connector. 17 92 18 LOCK MENU GUIDE + power ON Power OFF then ON to exit initial set mode. Initial set mode MENU No. 10 11 12 13 14 15 16 17 18 Indication MAX POWSET PoSAVE MODE SIMPLE MODE MODE SELECT MODE POWSET BEEP BAND BEEP BEEP LEVEL BEEP LIMIT CW NOR SIDE SID-T LEVEL SID-T LIMIT SYNC TUNING BACK LIGHT KEY LIGHT LIGHT TIMER LED BRIGHT AUTO OFF 19 20 21 22 CURRENT IP RF/SQL SUB DIAL OPT. FIL Description Simple mode setting Mode availability Power setting for mode Confirmation beeps Band edge beeps Beep level adjustment Beep audio level limit CW carrier point setting CW side tone level CW side tone level limit Frequency shift setting Display backlighting Key/switch backlighting Light timer setting LED brightness Automatic power OFF Current intercept point RF gain/squelch control Sub dial setting Description 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 PEAK HOLD QUICK SPLIT SPLIT LOCK SPL OFFSET SCAN RESUME SCAN SPEED U/D SPEED AM NB PAD CH PWR ON CHK A-TUNE STRT PTT TUNE TUNER SW 9600 MODE SPEECH LANG SPEECH SPD S-LVL SPCH Auto tune start function 40 41 42 43 CI-V CI-V CI-V CI-V CI-V address setting ADDRES BAUD TRN 731 Optional filter selection *When “3 SIMPLE MODE” is set to ON, 93 No. Indication Max. output power setting Power save setting box items are undisplayed. Peak meter hold setting Quick split function Split lock function Split offset frequency Scan resume condition Scanning speed [UP]/[DN] speed Noise blanker in AM mode Available memo pads Power ON check function PTT tune function Tuner switch condition Packet data speed Voice synthesizer lang. Voice synthesizer speed S-meter level speech Data transfer rate CI-V transceive CI-V data length MENU GUIDE M1 SPL A/B XFC DISPLAY M2 MW MCL V/M M3 FIL NB MET M4 VOX COM AGC (SSB/AM) M4 1/4 KEY AGC M4 1/4 TON AGC (RTTY) M4 1/4 M4 VOX MENU MENU MPW S2 SCN PRI SEL MPR V/M (in memory mode) S3 14 21 S4 ANF NR NRL DISPLAY (CW) AGC (SSB-D) COM MW DISPLAY MENU TON (FM) DISPLAY DISPLAY G1 BAND scope G2 SWR Graph G3 TX freq. G4 Memory name For 1 sec. Quick set mode MENU RTTY mode SSB-D mode RF POWER RF POWER RF POWER MIC GAIN KEY SPEED RTTY REV CAR SIDE CARRIER Frq*1 CW REV No. SSB/AM/FM mode Q1 RF POWER Q2 Q3 *1SSB mode only CW mode MODE S1 18 M-CH 18 94 19 ABOUT CE INSTALLATION NOTES For amateur base station installations it is recommended that the forwards clearance in front of the antenna array is calculated relative to the EIRP (Effective Isotropic Radiated Power). The clearance height below the antenna array can be determined in most cases from the RF power at the antenna input terminals. EIRP clearance heights by frequency band 1 Watts 2.1 m 10 Watts 2.8 m 25 Watts 3.4 m 100 Watts 5m 1000 Watts 12 m As different exposure limits have been recommended for different frequencies, a relative table shows a guideline for installation considerations. Forward clearance, EIRP by frequency band 100 Watts 2m 1000 Watts 6.5 m 10,000 Watts 20 m 100,000 Watts 65 m Below 30 MHz, the recommended limits are specified in terms of V/m or A/m fields as they are likely to fall within the near-field region. Similarly, the antenna may be physically short in terms of electrical length and that the installation will require some antenna matching device which can create local, high intensity magnetic fields. Analysis of such MF installations is best considered in association with published guidance notes such as the FCC OET Bulletin 65 Edition 97-01 and its annexes relative to amateur transmitter installations. The EC recommended limits are almost identical to the FCC specified ‘uncontrolled’ limits and tables exist that show pre-calculated safe distances for different antenna types for different frequency bands. Further information can be found at http://www.arrl.org/. • Typical amateur radio installation Exposure distance assumes that the predominant radiation pattern is forwards and that radiation vertically downwards is at unity gain (sidelobe suppression is equal to main lobe gain). This is true of almost every gain antenna today. Exposed persons are assumed to be beneath the antenna array and have a typical height to 1.8 m. The figures assume the worst case emission of constant carrier. For the bands 10 MHz and higher the following power density limits have been recommended: 10–50 MHz 2 W/sq m 95 In all cases any possible risk depends on the transmitter being activated for long periods. (actual recommendation limits are specified as an average during 6 minutes) Normally the transmitter is not active for long periods of time. Some radio licenses will require that a timer circuit automatically cuts the transmitter after 1–2 minutes etc. 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-703 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. This warning symbol indicates that this equipment operates in non-harmonised frequency bands and/or may be subject to licensing conditions in the country of use. Be sure to check that you have the correct version of this radio or the correct programming of this radio, to comply with national licensing requirement. ABOUT CE 19 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 Suite measurements have been performed. Kind of equipment: HF/50 MHz ALL MODE TRANSCEIVER Type-designation: i703 Düsseldorf 14th Mar. 2003 Place and date of issue Icom (Europe) GmbH Himmelgeister straße 100 D-40225 Düsseldorf Authorized representative name Version (where applicable): This compliance is based on conformity according to Annex III of the directive 1999/5/EC using the following harmonised standards: i) Article 3.1a ii) Article 3.1b iii) Article 3.2 iv) v) T. Maebayashi General Manager EN 60950 + A11 EN 301489-1 and EN 301489-15 (or ETS 300 684) EN 301 783-2 Signature •Version and frequency coverage Europe (#02, #12) Receive 0.500–29.999 MHz 50.000–54.000 MHz Italy (#10, #20) Transmit 1.800– 1.999 MHz 3.500– 3.800 MHz 7.000– 7.100 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 50.000–52.000 MHz Receive 1.830– 1.850 MHz 3.500– 3.800 MHz 7.000– 7.100 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 Transmit 1.830– 1.850 MHz 3.500– 3.800 MHz 7.000– 7.100 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 19 96 IC-703 #02, #12 (Europe) HF+50 M■ GER ■ FRA ■ ESP ■ SWE ■ AUT ■ NED ■ POR ■ DEN ■ GBR ■ BEL ■ ITA ■ FIN ■ IRL ■ LUX ■ GRE ■ SUI ■ NOR IC-703 #10, #20 (Italy) HF only ■ GER ■ FRA ■ ESP ■ SWE ■ AUT ■ NED ■ POR ■ DEN ■ GBR ■ BEL ■ ITA ■ FIN ■ IRL ■ LUX ■ GRE ■ SUI ■ NOR A-6241H-1EX-q Printed in Japan © 2003 Icom Inc. 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No Create Date : 2003:03:17 16:04:11-08:00 Modify Date : 2003:03:17 16:04:11-08:00 Page Count : 112 Creation Date : 2003:03:18 00:04:11Z Mod Date : 2003:03:18 00:04:11Z Producer : Acrobat Distiller 5.0.5 (Windows) Author : MASAAKIT Metadata Date : 2003:03:18 00:04:11Z Creator : MASAAKIT Title : IC-703 INSTRUCTION MANUAL(ENGLI.PDFEXIF Metadata provided by EXIF.tools