IC-R20_user.pdf

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1、INSTRUCTION MANUAL iR20 COMMUNICATIONS RECEIVER This device complies with Part 15 of the FCC rules. Operation is sub- ject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may c

2、ause undesired operation. WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CEL- LULAR RADIO TELEPHONE SERVICE SIGNALS IS PROHIBITED UNDER FCC RULES AND FEDERAL LAW. i FOREWORD Thank you for purchasing this Icom product. The IC-R20 COM- MUNICATIONS RECEIVERis designed and built with Icoms supe- rior t

3、echnology and craftsmanship. With proper care, this product should provide you with years of trouble-free operation. We want to take a couple of moments of your time to thank you for making your IC-R20 your radio of choice, and hope you agree with Icoms philosophy of “technology fi rst.” Many hours

4、of research and development went into the design of your IC-R20. DDFEATURES Covers 0.1503304.999 MHz* wide frequency range *Some frequency bands are inhibited according to version External power supply operation 1250 memory channels* with 26 banks available *200 auto write and 50 scan edge channels

5、are included. Built-in bar-antenna Dualwatch operation IMPORTANT READ ALL INSTRUCTIONScarefully and completely before using the receiver. SAVE THIS INSTRUCTION MANUALThis in- struction manual contains important operating instructions for the IC-R20. EXPLICIT DEFINITIONS WORDDEFINITION R WARNING! CAU

6、TION NOTE Personal injury, fi re hazard or electric shock may occur. Equipment damage may occur. Recommended for optimum use. No risk of personal injury, fi re or electric shock. Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United King

7、dom, Ger- many, France, Spain, Russia and/or other countries. RWARNING! NEVERoperate the receiver with a ear- phone, headphones or other audio accessories at high vol- ume levels. Hearing experts advise against continuous high volume operation. If you experience a ringing in your ears, re- duce the

8、volume level or discontinue use. RWARNING! NEVERconnect the receiver to an AC outlet. This may pose a fire hazard or result in an electric shock. RWARNING! NEVERoperate the receiver while dri- ving a vehicle. Safe driving requires your full attentionany- thing less may result in an accident. RWARNIN

9、G! NEVERthrow a battery cell or battery pack into a fi re since as internal battery gas can cause explo- sion. RWARNING! NEVERdisassemble the battery pack. If the battery cells internal material (electrolyte liquid) gets into your eyes, wash your eyes with water and obtain treat- ment from an eye do

10、ctor immediately. NEVERconnect the receiver to a power source of more than 6 V DC directly. This will damage the receiver. NEVERconnect the receiver to a power source using re- verse polarity. This will damage the receiver. NEVERexpose the receiver to rain, snow or any liquids. The receiver may be d

11、amaged. NEVERoperate or touch the receiver with wet hands. This may result in an electric shock or damage the receiver. NEVERsolder the battery cell. This may damage the bat- tery. AVOIDusing or placing the receiver in direct sunlight or in areas with temperatures below 10C (+14F) or above +60C (+14

12、0F). AVOIDthe use of chemical agents such as benzine or al- cohol when cleaning, as they can damage the receivers sur- faces. Even when the receiver power is OFF, a slight current still fl ows in the circuits. Remove batteries from the receiver when not using it for a long time. Otherwise, the insta

13、lled batteries will become exhausted, and will need to be recharged. RESPECTother peaples privacy. Information overheard but not intended for you cannot lawfully be used in any way. For U.S.A. only CAUTION: Changes or modifi cations to this device, not ex- pressly approved by Icom Inc., could void y

14、our authority to operate this device under FCC regulations. ii PRECAUTION iii SUPPLIED ACCESSORIES qAntenna (FA-B04RE) 1 wBelt clip (MB-98)1 set eBattery spacer 1 rHand strap 1 tBattery pack* (BP-206)1 yAC adaptor*(BC-149A/D) 1 (The shape of the BC-149A and BC-149D are different.) *Not supplied with

15、 some versions. OPERATING THEORY Electromagnetic radiation which has frequencies of 20,000 Hz (20 kHz*) and above is called radio frequency (RF) energy because it is useful in radio transmissions. The IC- R20 receives RF energy from 0.150 MHz* to 3304.999 MHz and converts it into audio frequency (AF

16、) energy which in turn actuates a loudspeaker to create sound waves. AF energy is in the range of 20 to 20,000 Hz. *kHz is an abbreviation of kilohertz or 1000 hertz, MHz is abbreviation of megahertz or 1,000,000 hertz, where hertz is a unit of frequency. OPERATING NOTES The IC-R20 may receive its o

17、wn oscillated frequency, result- ing in no reception or only noise reception, on some frequen- cies. The IC-R20 may receive interference from extremely strong signals on different frequencies or when using an external high-gain antenna. qwe y r t iv TABLE OF CONTENTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14

18、 15 FOREWORD . i IMPORTANT . i EXPLICIT DEFINITIONS . i PRECAUTION . ii SUPPLIED ACCESSORIES . iii OPERATING THEORY . iii OPERATING NOTES . iii TABLE OF CONTENTS . iv QUICK REFERENCE GUIDE . IVI I Preparation. I 1 PANEL DESCRIPTION . 17 I Front, top and side panels . 1 I Function display . 6 2 BATTE

19、RY CHARGING . 810 I Battery installation. 8 I Caution. 9 I Battery charging . 9 3 FREQUENCY AND CHANNEL SETTING . 1116 I Mode selection. 11 I Operating band selection. 12 I Setting a tuning step. 14 I Setting a frequency. 14 I Selecting a memory channel. 10 I Receive mode selection . 16 I Lock funct

20、ion . 16 4 BASIC OPERATION . 1723 I Receiving. 17 I Setting audio volume. 17 I Squelch level setting. 18 I Monitor function. 18 I Attenuator function . 19 I RF gain. 19 I Duplex operation . 20 I AFC function. 21 I NB/ANL functions . 21 I Band scope. 22 I DIAL function assignment. 23 5 DUALWATCH OPER

21、ATION . 2425 I Setting audio volume. 24 I Squelch level setting. 24 I Main band selection. 25 I Band exchange. 25 6 MEMORY CHANNELS. 2633 I General description . 26 I Memory channel programming. 26 I Memory bank setting. 27 I Memory bank selection. 28 I Programming memory/bank name. 29 I Selecting m

22、emory/bank name indication. 30 I Copying memory contents. 31 I Memory clearing. 32 I Erasing/transferring bank contents. 33 7 SCAN OPERATION . 3441 I Scan types. 34 I Full/band/programmed scan. 35 I Scan edges programming . 36 I Memory/bank/all bank scan. 37 I Auto-memory write scan. 38 I Skip chann

23、el/frequency setting. 39 I Scan resume condition. 40 7 PRIORITY WATCH . 4244 I Priority watch types . 42 I Priority watch operation. 43 9 COMFORTABLE RECEIVING. 4548 I Tone/DTCS squelch operation. 45 I Tone squelch frequency/DTCS code set- ting. 46 I DTCS polarity setting. 47 I Tone scan. 48 10 SET

24、MODE . 4959 I General. 49 I Set mode items. 50 11 OTHER FUNCTIONS . 6067 I Antenna selection. 60 I Weather channel operation . 61 I Data cloning . 62 I Auto power-off function. 63 I IC recorder. 64 I Partial reset . 67 I All reset . 68 12 CONTROL COMMAND . 6869 I General. 68 I Data format. 68 I Comm

25、and table. 68 13 FREQUENCY TABLE . 7061 I TV channels. 70 I VHF marine channels. 73 I Weather channels. 73 I Other communications in the USA . 74 I Other communications other countries . 76 14 MAINTENANCE . 78 I Troubleshooting. 78 15 SPECIFICATIONS . 79 16 OPTIONS . 80 16 I QUICK REFERENCE GUIDE I

26、Preparation D Battery installation qRemove the battery cover from the receiver. wInstall 3 R6(AA) size alkaline cell batteries. Be sure to observe the correct polarity. Keep battery the contacts clean. Its a good idea to clean the battery terminals once a week. D Belt clip Conveniently attaches to y

27、our belt. Attach the belt clip using the supplied screws. D Handstrap Slide the handstrap through the loop on the top of the rear panel as illustrated at below. Facilities carrying. q w e II QUICK REFERENCE GUIDE DD Antenna Insert the supplied antenna into the antenna connector and screw down the an

28、tenna as shown at right. NEVER hold the antenna when car- rying the receiver. Keep the jack cover attached when jack is not in use to protect the con- nectors from dust and moisture. For your information Third-party antennas may in- crease receiver performance. D Charging the battery qInstall the ba

29、ttery pack (BP-206). wPlug the AC adaptor into an AC outlet. eInsert the adaptor plug into the DC jack of the receiver. RRWARNING!: NEVER charge the alkaline batteries. IC-R20 to DC jack Optional CP-18A/E Cigarette lighter cable with DC-DC converter AC adapter BC-149A/D to cigarette lighter socket t

30、o AC outlet Quick reference guide I Front, top and side panels qANTENNA CONNECTOR (p. II) Connects the supplied antenna. wSQUELCH KEY SQL (p. 18) Push and hold to temporarily open the squelch and monitor the operating frequency. While pushing this key, rotate the tuning dial* to adjust the squelch l

31、evel. eUP/DOWN KEYS YY/ZZ Adjust audio volume level.* (p. 17) rUSB JACK USB Connect a PC via the optional OPC-1382 CLONING CABLE for Data/Audio cloning. tEXTERNAL DC-IN CONNECTOR DC (p. 9) Connects an AC adaptor or an optional cigarette lighter cable for both charging the installed re-chargeable bat

32、tery pack and operating. yEXTERNAL SPEAKER CONNECTOR SP/CI-V Connect an optional earphone or headphone. The internal speaker will not function when any exter- nal equipment is connected. (See p. 80 for a list of available options.) Connect an optional CT-17 for remote control operation. (p. 68) q w

33、e r t y u i KEYPAD 1 PANEL DESCRIPTION1 2 1PANEL DESCRIPTION 1 uLEFT DIAL L-DIAL During single band operation, rotate to adjust audio vol- ume level.* (p. 17) During dualwatch operation, activates as the tuning dial for upper side on the display.* iRIGHT DIAL R-DIAL Rotate to select the operating fr

34、equency.* (p. 12) While scanning, changes the scanning direction.* (p. 26) While pushing SQL, sets the squelch level.* (p. 18) While pushing VFO MHz, sets the operating frequency in 1 MHz or 10 MHz in VFO mode.* (p. 14) While pushing BAND, selects the operating band in VFO mode.* (p. 14) While dualw

35、atch operation, activates as the tuning dial for lower side on the display.* (p. 14) KEYPAD qDUALWATCH/CLEAR KEY DUALWATCH Push for 1 sec. to toggle between single band and dualwatch operation. (p. 24) Clears numeric key input. (p. 15) Returns to previous operating condition while setting frequency

36、or memory channel, or while in set mode. Cancels the band scope or scan function. (pgs. 22, 35) wMAIN/SUB KEY MAIN/SUB (p. 25) During dualwatch operation, push to select the MAIN band or SUB band. During dualwatch operation, push for 1 sec. to exchange the upper frequency and lower fre- quency. ePOW

37、ER KEY PWR Push for 1 sec. to turn the receiver power ON and OFF. rBAND KEY BAND Push to select the operating frequency band. (p. 14) BAND POWER MAIN/SUB DUALWATCH DIAL.SELSWEEPCENTER T-SCANSKIPM.N TONESETTS ATTRF GAINIC Recorder 123 4560 789 BAND DUALWATCHMAIN/SUBPOWER VFO MHz MODE SCAN MR S.MW SCO

38、PE LOCK REC AFC *The function of tuning control (DIAL) and volume control (Y/Z) can be traded. See page 23 for details. 3 1PANEL DESCRIPTION t VFO/MHz KEY VFO MHz Push to select VFO mode. (p. 11) Push for 1 sec. to toggle between the 1 MHz or 10 MHz tuning steps (p. 14 y MODE/SCAN KEY MODE SCAN Push

39、 to select the operating mode (FM, WFM, AM, USB, LSB, CW). (p. 16) Push for 1 sec. to start a scan. (p. 35) u MEMORY KEY MR S.MW Push to select between memory mode, TV channel and PreSet channel. (p. 11) Push for 1 sec. to enter memory write condi- tion. (p. 26) Push for 2 sec. to write the operatin

40、g fre- quency into the selected memory channel in VFO mode. Push MR S.MW for 2 sec. to transfer the dis- played frequency into the VFO in memory mode. (p. 31) i VOLUME/DIAL KEY 1 DIAL SEL Inputs digit 1 for frequency input, memory channel selection, etc. Push for 1 sec. to trade the volume control (L- DIAL, Y/Z) and tuning control (R-DIAL) functions. (p. 23) appears when the Y/Zkeysfunction as a volume control. o SWEEP KEY 2 SWEEP (p. 22) Inputs digit 2 for frequency input, memory channel selection, etc.