ICOM orporated 297000 Scanning Receiver User Manual

ICOM Incorporated Scanning Receiver Users Manual

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297000 User Manual

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INSTRUCTION MANUALi2820HDUAL BAND FM TRANSCEIVERThis device complies with Part 15 of the FCC rules. Operation is sub-ject to the following two conditions: (1) This device may not causeharmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation.

RWARNING RF EXPOSURE! This device emits RadioFrequency (RF) energy. Extreme caution should be observed whenoperating this device. If you have any questions regarding RF expo-sure and safety standards please refer to the Federal Communica-tions Commission Ofﬁce of Engineering and Technology’s report onEvaluating Compliance with FCC Guidelines for Human Radio fre-quency Electromagnetic Fields (OET Bulletin 65).RWARNING! NEVER connect the transceiver to an AC out-let. This may pose a ﬁre hazard or result in an electric shock.RWARNING! NEVER operate the transceiver while driving avehicle. Safe driving requires your full attention—anything less mayresult in an accident.NEVER connect the transceiver to a power source of more than16 V DC. This will damage the transceiver.NEVER connect the transceiver to a power source using reversepolarity. This will damage the transceiver.NEVER cut the DC power cable between the DC plug and fuseholder. If an incorrect connection is made after cutting, the transceivermay be damaged.NEVER expose the transceiver to rain, snow or any liquids. Thetransceiver may be damaged.NEVER operate or touch the transceiver with wet hands. This mayresult in an electric shock or damage the transceiver.NEVER place the transceiver where normal operation of the vehi-cle may be hindered or where it could cause bodily injury.NEVER let objects impede the operation of the cooling fan on therear panel.DO NOT push the PTT when not actually desiring to transmit.DO NOT allow children to play with any radio equipment contain-ing a transmitter.During mobile operation, DO NOT operate the transceiver with-out running the vehicle’s engine. When the transceiver’s power is ONand your vehicle’s engine is OFF, the vehicle’s battery will soon be-come exhausted.AVOID using or placing the transceiver in direct sunlight or inareas with temperatures below –10°C or above +60°C.BE CAREFUL! The transceiver will become hot when operat-ing it continuously for long periods.AVOID setting the transceiver in a place without adequate venti-lation. Heat dissipation may be affected, and the transceiver may bedamaged.AVOID the use of chemical agents such as benzine or alcoholwhen cleaning, as they can damage the transceiver’s surfaces.USE Icom microphones only (supplied or optional). Other manu-facturer’s microphones have different pin assignments and may dam-age the transceiver if attached.For U.S.A. onlyCAUTION: Changes or modiﬁcations to this device, not ex-pressly approved by Icom Inc., could void your authority tooperate this device under FCC regulations.iiPRECAUTIONS

iiiTABLE OF CONTENTSSUPPLIED ACCESSORIESqDC power cable (3 m) ………………………………………1wController cable (10 cm†; 3.9 in†) …………………………1eSeparation cable (3.4 m†; 11.2 ft†) …………………………1rMicrophone (HM-133)* ……………………………………1tFuse (20 A) …………………………………………………1yMicrophone hanger …………………………………………1uMounting screws, nuts and washers …………………1 setiMobile mounting bracket …………………………………1oMicrophone connector plate with screw ……………1 set!0Remote controller bracket …………………………………1*HM-154 HAND MICROPHONEmay be supplied with some versions.†Approx.qwetriu!0oyFOREWORD ........................................................................................... iIMPORTANT ............................................................................................ iEXPLICIT DEFINITIONS ......................................................................... iPRECAUTIONS ...................................................................................... iiSUPPLIED ACCESSORIES .................................................................. iiiTABLE OF CONTENTS ......................................................................... iiiQUICK REFERENCE GUIDE ........................................................... I–XII■Installation ....................................................................................... I■Your ﬁrst contact ......................................................................... VIII■Repeater operation ........................................................................ X■Programming memory channels.................................................... XI1 PANEL DESCRIPTION ............................................................... 1–10■Front panel— controller ................................................................. 1■Function display ............................................................................. 3■Main unit ........................................................................................ 5■Microphone (HM-133) .................................................................... 7■Microphone keypad ........................................................................ 8■Optional microphones (HM-118N/TN/TAN)................................... 102 SETTING A FREQUENCY ........................................................ 11–15■Preparation ................................................................................... 11■Using the tuning dial .................................................................... 13■Using the [Y]/[Z] keys ................................................................. 13■Using the keypad ......................................................................... 13■Tuning step selection ................................................................... 14■Lock functions .............................................................................. 153 BASIC OPERATION ................................................................. 16–21■Receiving ..................................................................................... 16■Monitor function ........................................................................... 16■Squelch attenuator ....................................................................... 17■V/V, U/U simultaneous receive (Para-watch) ............................... 18■Sub band mute/sub band busy beep ........................................... 19■Transmitting ................................................................................. 20

12345678910111213141516171819iv■Selecting output power ................................................................ 20■One-touch PTT function ............................................................... 21■Audio mute function ..................................................................... 214 REPEATER OPERATION ......................................................... 22–28■General ........................................................................................ 22■Accessing a repeater ................................................................... 23■Subaudible tones ......................................................................... 25■Offset frequency .......................................................................... 27■Auto repeater (USA version only) ................................................ 285 MEMORY OPERATION ............................................................ 29–37■General description ...................................................................... 29■Memory channel selection ........................................................... 29■Programming a memory channel ................................................. 30■Transferring memory contents ..................................................... 32■Memory clearing .......................................................................... 34■Memory bank selection ................................................................ 35■Memory bank setting .................................................................... 36■Transferring bank contents .......................................................... 376 CALL CHANNEL OPERATION ................................................ 38–39■Call channel selection .................................................................. 38■Call channel transferring .............................................................. 38■Programming a call channel ........................................................ 397 SCAN OPERATION .................................................................. 40–45■Scan types ................................................................................... 40■Scan start/stop ............................................................................. 41■Scan edges programming ............................................................ 42■Skip channel setting ..................................................................... 44■Scan resume condition ................................................................ 458 PRIORITY WATCH .................................................................... 46–47■Priority watch types ...................................................................... 46■Priority watch operation ............................................................... 479 DTMF MEMORY ENCODER ..................................................... 48–51■Programming a DTMF code ......................................................... 48■Transmitting a DTMF code .......................................................... 50■DTMF speed ................................................................................ 5110 POCKET BEEP AND TONE SQUELCH ................................... 52–55■Pocket beep operation ................................................................. 52■Tone/DTCS squelch operation ..................................................... 54■Tone scan ..................................................................................... 5511 OTHER FUNCTIONS ................................................................ 56–72■Set mode ...................................................................................... 56■Initial set mode ............................................................................. 60■AM/FM narrow mode ................................................................... 64■Weather channel operation (USA version only) ........................... 65■Microphone keys .......................................................................... 66■Partial reset .................................................................................. 67■All reset ........................................................................................ 67■Data cloning ................................................................................. 68■Packet operation .......................................................................... 6912 MAINTENANCE ........................................................................ 73–74■Troubleshooting ........................................................................... 73■Fuse replacement ........................................................................ 7413 SPECIFICATIONS AND OPTIONS ........................................... 75–76■Speciﬁcations ............................................................................... 75■Options ......................................................................................... 7614 MODE ARRANGEMENT ........................................................... 77–78

IQUICK REFERENCE GUIDE■InstallationDPrecaution— magnetsRCAUTIONMagnets are used for the controller’s attachment to the mainunit.NEVER hold the whole unit by the controller only when carry-ing the transceiver. Carry the transceiver holding the mainunit. If held by the controller, the main unit may drop off andmay result in injury to the person carrying it or damage thetransceiver.NEVER attach the controller on the main unit’s top cover, par-ticularlly around the internal speaker grill. It may cause thecontents of the CPU and memory device could be deleted.NEVER put the controller near a clock, television set (CRTtype), magnetic compass and any magnetic/IC cards, creditcards, etc. It may cause the product to malfunction, and thecontent of the magnetic card could be deleted.Please note that the controller may drop off when a high im-pact or vibration is applied.DInstallation methods• Single body installation• The supplied mounting bracket can be used for the mainunit installation.Transceiver

IIQUICK REFERENCE GUIDE• Remote installation•The supplied remote controller bracket and separation cablecan be used for installation.•Optional OPC-1156 SEPARATION CABLE(3.5 m; 11.5 ft) isavailable for extend the separation cable.•Optional OPC-440 MICROPHONE CABLE(5.0 m; 16.4 ft) andOPC-647 (2.5 m; 8.2 ft) are available to extend the micro-phone cable.•Optional OPC-441 SPEAKER CABLE(5.0 m; 16.4 ft) is avail-able to extend the speaker cable.DLocationSelect a location which can support the weight of the trans-ceiver and does not interfere with driving. We recommend thelocations shown in the diagram below.NEVER place the transceiver or remote controller where nor-mal operation of the vehicle may be hindered or where itcould cause bodily injury.NEVER place the transceiver or remote controller where airbag deployment may be obstructed.DO NOT place the transceiver or remote controller where hotor cold air blows directly onto it.AVOID placing the transceiver or remote controller in directsunlight.ControllerMain unitMain unitMain unitMain bodyFront panelQuick reference guide

IIIQUICK REFERENCE GUIDEDUsing the mounting bracketqDrill 4 holes where the mounting bracket is to be installed.•Approx. 5.5–6 mm (1⁄4″) when using nuts; approx. 2–3 mm (1⁄8″)when using self-tapping screws.wInsert the supplied screws, nuts and washers through themounting bracket and tighten.eAdjust the angle for your suitable position.DController/Separation cable connectionTwo connection cables, conteoller cable (10 cm; 3.9 in) for sin-gle body installation and separation cable (3.4 m; 11.2 ft) for re-mote installation, are supplied with the IC-2820H.Connect the controller and the main unit using with the sup-plied connection cable as follows.IMPORTANT!— number of pinNumber of pin, between both side connectors of the connec-tion cable are different— one side is 6-pin, other side is 4-pin.You should connect the 6-pin connector to the main unit, andthe 4-pin connector to the controller.ControllerMain unit6-pin connector 4-pin connectorNutSpring washerWhen usingself-tappingscrewsFlat washer Mounting nutMountingbracket25˚

IVQUICK REFERENCE GUIDEDMicrophone connectionA microphone connector is available on the main unit frontpanel. Connect the supplied microphone connector as illus-trated below.Attach the supplied microphone connector plate after the mi-crophone connection, otherwise the controller will easilydropped off when the microphone cable is pulled during sin-gle body installation.DController’s attachmentYou can attach the controller of the IC-2820H in one of 2methods. • Example 1• Example 2Controller MicrophoneMain unitQuick reference guide

VDRemote installationThe supplied remote controller bracket is used for remote in-stallation.• Attach the remote controllerbracket onto a flat surfaceusing with 4 self-tappingscrews (2.6 mm(d)), or double-sticky tape, etc., as at left,then attach remote controllerto the bracket Hint!The supplied remote controller bracket may ﬁts to a mount-ing angle, such as for car TV set as below. Ask your car ac-cessory shop, if desired.DBattery connection☞RWARNING NEVER remove the fuse holders from theDC power cable.☞NEVER connect the transceiver directly to a 24 V battery.☞DO NOT use the cigarette lighter socket for power con-nections. (See p. ?? for details)Attach a rubber grommet when passing the DC power cablethrough a metal plate to prevent a short circuit.• CONNECTING TO A DC POWER SOURCEIC-2820HFuses20 Ablackred⊕−12 VGrommetNOTE: Use terminals for the cable connections.WARNING!NEVERremove thefuse holders.Crimp Solder12 Vbattery SuppliedDC power cable+ red_ blackRemote controller bracketQUICK REFERENCE GUIDE

VIQUICK REFERENCE GUIDEDDC power supply connectionUse a 13.8 V DC power supply with at least 15 A capacity. Make sure the ground terminal of the DC power supply isgrounded.• CONNECTING TO A DC POWER SUPPLYSee p. ?? for fuse replacement.DC powersupply 13.8 Vto anACoutletFuses20 Ablackred⊕−⊕−IC-2820HQuick reference guide

VIIQUICK REFERENCE GUIDEDAntenna installation•Antenna locationTo obtain maximum performance from the transceiver, selecta high-quality antenna and mount it in a good location. It isnot necessary to use radials on a magnetic mount (“magmount”) antenna.•Antenna connectorThe antenna uses a PL-259 connector.•PL-259 CONNECTORqSlide the coupling ringdown. Strip the cablejacket and soft solder.wStrip the cable as shownat left. Soft solder the cen-ter conductor.eSlide the connector bodyon and solder it.rScrew the coupling ringonto the connector body.(10 mm ≈3⁄8 in)NOTE: There are many publications covering proper an-tennas and their installation. Check with your local dealerfor more information and recommendations.30 mm10 mm (soft solder)10 mm1–2 mmsolder solderSoftsolderCoupling ringTo antennafor diversityTo antennafor Tx/RxRoof-mount antenna(Drill a hole or use a magnetic mount.)Gutter-mount antennaTrunk-mountantenna

IXQUICK REFERENCE GUIDE3. Selecting the operating frequency bandThe IC-2820H has 2 m and 70 cm bands for each left andright band. The operating band can be exchanged betweenthem, and the same bands, V/V and U/U settings are alsopossible.➥Push and hold the desired band’s (left or right)[MAIN•BAND] for 1 sec. then rotate the appropriate band’s[DIAL].•Push the [MAIN•BAND] momentarily to return to frequency in-dication.4. Tune the frequencyThe tuning dial will allow you to dial in the frequency you wantto operate. Pages ?? and ?? will instruct you on how to setthe tuning speed.Using the HM-133You can directly enter the frequency with the HM-133 keypadfor the main band. [EXAMPLE]: Setting frequency to 145.3625 MHz.PushPushPushPushRotate the desired [DIAL].[DIAL][MAIN•BAND]Frequency band initial is displayed.

XQUICK REFERENCE GUIDE■Repeater operation1. Setting duplex Push desired band’s [MAIN•BAND] to select the main band.Push [DUP•MONI] once or twice to select minus duplex orplus duplex.•The USA version has an auto repeater function, therefore, settingduplex is not required.2. Repeater tone Push [TONE•DTMF] several times until “TONE” appears, ifthe repeater requires a subaudible tone to be accessed.Using the HM-133Plus or minus duplex selection and the repeater tone settingcan be made easily via HM-133.Push [DUP–7(TONE)] for minus duplex; [DUP+8(TSQLS)]for plus duplex selection, push [FUNC] then [DUP–7(TONE)]to turn the repeater tone ON.PushPush , then PushPush [TONE•DTMF].Push [DUP•MONI].Quick reference guide

XIQUICK REFERENCE GUIDE■Programming memory channelsThe IC-2820H has a total of 522 memory channels (including20 scan edges and 2 call channels) for storing often used operat-ing frequency, repeater settings, etc. Any memory channel can be recalled from either left or rightband.1. Setting a frequencyIn VFO mode, set the desired operating frequency with re-peater, tone and tuning steps, etc. ➥Push the desired band’s [V/MHz•SCAN] to select VFO.➥Rotate the same band’s [DIAL] to set the desired fre-quency.•Set other data, such as repeater tone, duplex information, tuningstep), if desired.2. Selecting a memory channel Push and hold the same band’s [M/CALL•MW] for 1 sec.,then rotate the same band’s [DIAL] to select the desiredmemory channel.•“X” indicator and memory channel number blink.3. Writing a memory channelPush and hold the same band’s [M/CALL•MW] for 1 sec. toprogram.•3 beeps sound•Return to VFO mode automatically after the program.•Memory channel number automatically increases when continuingto push the [M/CALL•MW] after programming.Push [M/CALL•MW] for 1 sec.

XIIQUICK REFERENCE GUIDEUsing the HM-133qPush [MR/CALL] to select memory mode.wPush [ENTC(T-OFF)] ﬁrst, then enter the desired memorychannel via the keypad.ePush [VFO/LOCK] to select VFO mode, then set the de-sired operating frequency, including offset direction, tonesettings, etc.➥Push [VFO/LOCK] to select VFO.➥Push [ENTC(T-OFF)] ﬁrst, then enter the desired oper-ating frequency via the keypad.•Set other data, such as repeater tone, duplex information, tun-ing step, if necessary.rPush [FUNC] then push and hold [CLRA(MW)] for 1 sec.to program.•3 beeps sound•Memory channel number automatically increases when continu-ing to push [CLRA(MW)] after programming.Push , then Quick reference guide

■Front panel— controllerqPOWER KEY [PWR]Push and hold for 1 sec. to turn power ON and OFF.wFUNCTION•LOCK KEY [FF•]➥Push to display the function guide. (p. ??)➥Push and hold for 1 sec. to turn the lock function ONand OFF. (p. ??)eOUTPUT POWER•PRIORITY KEY [LOW•PRIO]➥Each push changes the output power selection. (p. ??)➥Push and hold for 1 sec. to start a priority watch. (p. ??)rTONE•DTMF KEY [TONE•DTMF]➥Each push selects a tone function. (pgs. ??, ??)•TONE, TSQL , TSQL, TSQL-R, DTCS , DTCS, DTCS-R,DSQL , DSQL, CSQL , CSQL or tone function OFF canbe selected.➥Push and hold for 1 sec. to enter DTMF set mode.(p. ??)tDUPLEX•MONITOR KEY [DUP•MONI]➥Push to select DUP–, DUP+ and simplex (no indications)operation. (p. ??)➥Push and hold for 1 sec. to turn the monitor function ONand OFF. (p. ??)DUPMONITONEDTMFLOWPRIOM/CALLMWV/MHzSCANV/MHzSCANM/CALLMWBANDMAINBANDMAINDUAL BAND TRANSCEIVER i2820HFunction display (pgs. 3, 4)qertw1PANEL DESCRIPTION1*The keys wto tare forthe MAIN band only.

21PANEL DESCRIPTION12345678910111213141516171819ySQUELCH CONTROL [SQL]Varies the squelch level for left and right band. (p. ??)•The RF attenuator activates and increases the attenuation whenrotated clockwise to the center position and further. (p. ??)uVOLUME CONTROL [VOL] (p. ??)Adjusts the audio level for left or right band.iTUNING DIAL [DIAL]Selects the operating frequency (p. ??), memory channel(p. ??), the setting of the set mode item and the scanningdirection (p. ??) for left or right band.oMAIN•BAND KEY [MAIN•BAND]➥Push to select the main band. (p. ??)➥Push and hold for 1 sec. to enter band selectiion mode.(p. ??)!0VFO/MHz TUNING•SCAN KEY [V/MHz•SCAN]➥Push to select from VFO mode and 1 MHz (or 10 MHzfor some versions) tuning. (p. ??)➥Push and hold for 1 sec. to enter scan type selectionmode. (p. ??)•Cancels a scan when pushed during scan.!1MEMORY/CALL•MEMORY WRITE KEY [M/CALL•MW]➥Push to select and toggle memory, call and weatherchannel* modes. (pgs. ??, ??, ??, ??)*Weather channels available for USA versions only.➥Push and hold for 1 sec. to enter select memory writemode for memory channel programming. (pgs. ??, ??,??)DUPMONITONEDTMFLOWPRIOM/CALLMWV/MHzSCANV/MHzSCANM/CALLMWBANDMAINBANDMAINDUAL BAND TRANSCEIVER i2820HLeft band Right bandyuiyuioo!0 !0!1 !1*The same controls for both the left andright bands are arranged in symmetry.

31PANEL DESCRIPTION■Function displayqOPERATING MODE INDICATOR (p. ??)Shows the selected operating mode.•FM, FM-N, AM, AM-N and DV* are available, depending on op-erating band.*Available only when the optional UT-123 is installed.wDUPLEX INDICATORS (p. ??)“DUP+” appears when plus duplex, “DUP –” appears whenminus duplex (repeater) operation is selected.eNAME INDICATOR During memory mode operation, the programmed memoryor memory bank name is displayed.rTONE INDICATOR➥During FM mode operation:●●“TONE” appears while the repeater tone is in use.(p. ??)●●“TSQL” appears while the tone squelch function is inuse. (p. ??)●●“TSQL-R” appears while the reverse tone squelchfunction is in use. (p. ??)●●“DTCS” appears while the DTCS squelch function isin use. (p. ??)●●“DTCS-R” appears while the reverse DTCS squelchfunction is in use. (p. ??)qi@2!9!2@1!5!5 !4!4 !8!8 !6!7!6!7 @0!3 !9o!0!1!2!3ytqwrereqwu*The same indications for both the left and right bands are arranged.

41PANEL DESCRIPTION12345678910111213141516171819➥During DV* (Digital) mode operation:●●“DSQL” appears while the digital call sign squelchfunction is in use. (p. ??)●●“CSQL” appears while the digital code squelch func-tion is in use. (p. ??)➥“” appears with the “TSQL,” “DTCS,” “DSQL”* or “CSQL”* indicator while the pocket beep function is in use.(pgs. ??, ??)*Available only when the optional UT-123 is installed.tEMR MODE INDICATOR Appears when the EMR mode* operation is in use.*Available only when the optional UT-123 is installed.yGPS INDICATOR Appears while GPS function* is in use. (p. ??)*Available only when the optional UT-123 is installed.uSUB BAND REMOTE CONTROL INDICATOR (p. ??)Appears when the sub band remote control function is inuse. iBREAK-IN INDICATOR Appears when the break-in* operation is in use.*Available only when the optional UT-123 is installed.oAUTO POWER OFF INDICATOR Appears when the auto power OFF function is in use.!0KEY LOCK INDICATOR Appears when the key lock function is activated. (p. ??)!1DTMF INDICATOR Appears while DTMF memory function is in use.(p. ??)!2FREQUENCY READOUTShows the operating frequency, set mode contents, etc.•Frequency decimal point blinks while scanning. (p. ??)!3PRIORITY INDICATOR Appears while priority watch is activated, blinks while pri-ority watch is paused. (p. ??)!4MEMORY CHANNEL NUMBER INDICATORS ➥Shows the selected memory channel number. (p. ??)➥Shows the selected bank initial. (p. ??)➥“C” appears when the call channel is selected. (p. ??)!5SKIP INDICATOR (p. ??)➥“≈” appears when the displayed memory channel isspeciﬁed as a skip channel.➥“P≈” appears when the displayed frequency is speciﬁedas a program skip frequency.!6MEMORY INDICATOR (pgs. ??, ??)Appears when memory mode is selected.!7WEATHER CHANNEL INDICATOR (p. ??)“WX” appears when the weather channel is selected.*Available with the USA version only.!8S/RF INDICATORS➥Shows the relative signal strength while receiving sig-nals. (p. ??)➥Shows the output power level while transmitting. (p. ??)

51PANEL DESCRIPTION■Function display— continued!9OUTPUT POWER INDICATORS“LOW” appears when low output power; “MID” appearswhen middle output power, “HI” appears when high outputpower is selected.@0BUSY INDICATOR ➥Appears when a signal is being received or the squelchis open. (p. ??)➥Blinks while the monitor function is activated. (p. ??)@1AUDIO MUTE INDICATOR Appears when the audio mute (p. ??)or sub band mute(p. ??)function is in use.@2MAIN INDICATOR (p. ??)Indicates the main band for transmit and function control. qi@2!9!2@1!5!5 !4!4 !8!8 !6!7!6!7 @0!3 !9o!0!1!2!3ytqwrereqwu*The same indications for both the left and right bands are arranged.

61PANEL DESCRIPTION12345678910111213141516171819@3FREQUENCY MARKER (p. ??)Shows the selected frequency in the band scope.@4CENTER FREQUENCY MARKERShows the center frequency of the band scope. @5BAND SCOPE INDICATOR When the band scope function is in use, shows the bandconditions.@3@4@5Function guide indications (pgs. ??–??)

71PANEL DESCRIPTION■Function guide indicationsThe function guide indications allow you to simplifying a widevariety of function operation DFunction guideqMODE KEY [MODE](V/MHz•SCAN) (p. ??)Push to select an operating mode from FM, FM-N, AM,AM-N and DV* in main band.*Available only when the optional UT-123 is installed.wTUNING STEP KEY [TS](M/CALL•MW) (p. ??)Push to display the tuning step selection mode.•5.0,* 6.25,* 10, 12.5, 15,* 20, 25, 30 and 50 kHz steps are avail-able. *Not selectable in 900 MHz band.eBAND SCOPE KEY [SCP](DUP•MONI) (p. ??)➥Push to display the simple band scope and sweeps 1time.➥Push and hold for 1 sec. to display the simple bandscope and sweeps continuously.•Push [SCP](DUP•MONI) momentarily to cancel the sweep.rSCAN SKIP KEY [SKIP](TONE•DTMF) (p. ??)During in memory mode, push to select the scan skip con-dition for the selected memory channel.•“≈” appears when memory skip, “P≈” appears when programskip selection. tMEMORY NAME INDICATION KEY [M.N](LOW•PRIO)(p. ??)Push select the memory name indication condition.•Memory name, frequency and OFF selections are available.ySINGLE WATCH KEY [SNGL](M/CALL•MW) (p. ??)Push select the single watch mode.•Push [DUAL](M/CALL•MW)(for right band) to select the dualwatch mode.uMENU MODE KEY [MENU](V/MHz•SCAN) (p. ??)Push select the menu mode indication.DFunction guide 2The function guide 2 indications appear only when the op-tional UT-123 is installed and DV mode is selected.iCALL SIGN SELECT KEY [CS](V/MHz•SCAN) (p. ??)Push to display the call sign selection screen.oRECEIVED CALL SIGN RECORD KEY[CD](M/CALL•MW) (p. ??)Push to display the received call sign record screen.!0CQ KEY [CQ](DUP•MONI) (p. ??)Push to set “CQCQCQ” as the station call sign for the call.io!0!1!2!3uqwertyu

81PANEL DESCRIPTION12345678910111213141516171819!1CALL SIGN SET KEY [R>CS](TONE•DTMF) (p. ??)Push to copy and set the previously received station callsign as the station call sign for the call.!2DV MESSAGE KEY [MSG](LOW•PRIO) (p. ??)Push to display the DV message screen.!3VOICE MEMORY KEY [REC](V/MHz•SCAN) (p. ??)Push to display the DV voice memory record screen.DFunction guide 3*The function guide 3 indications appear only when the op-tional UT-123 is installed.!4DATA KEY [DATA](V/MHz•SCAN) (p. ??)Push to toggle the GPS data communication ON and OFF.•“G•D” appears when the GPS data communication is set to ON.!5POSITION INFORMATION KEY [POSI](M/CALL•MW)(p. ??)Push to display the position information screen.!6GPS DATA STORE KEY [G-WR](DUP•MONI) (p. ??)Push and hold for 1 sec. to store the received position in-formation.!7GPS MEMORY RECALL KEY [GMR](TONE•DTMF)(p. ??)Push to select the GPS memory screen to display thestored positon information.!8DV MESSAGE KEY [MSG](LOW•PRIO) (p. ??)Push to display the DV message screen.!4 !5 !6 !7 !8 u

91PANEL DESCRIPTION■Main unitqCONTROLLER CONNECTOR [CONTROLLER] (p. V)Connects the controller unit with the supplied cable.wDATA JACK [DATA]Connect to a PC via optional data communication cableOPC-1529 for slow-speed data communication in DV* modeoperation.*Available only when the optional UT-123 is installed.eGPS ANTENNA SOCKET [GPS ANT] (p. V)Connects the GPS antenna supplied with the optional UT-123.rPACKET JACKS [PACKET] (p. V)Connect a TNC (Terminal Node Controller), etc. for data com-munications. The receiver can support 9600 bps packetcommunication (AFSK).tMICROPHONE CONNECTOR [MIC]Connects the supplied or an optional microphone. q+8 V DC output (Max. 10 mA)wChannel up/downe8 V control INrPTTtGND (microphone ground)yMIC (microphone input)uGNDiData INyANTENNA CONNECTOR [ANT1]Connects a 50 Ωantenna with a PL-259 connector and a50 Ωcoaxial cable for transmission and reception.ANTENNA INFORMATIONFor radio communications, the antenna is of critical impor-tance, to maximize your output power and receiver sensi-tivity. The transceiver accepts a 50 Ωantenna and lessthan 1:1.5 of Voltage Standing Wave Ratio (VSWR). HighSWR values not only may damage the transceiver but alsolead to TVI or BCI problems.qiqwr te!1uio!0y

101PANEL DESCRIPTION12345678910111213141516171819uCOOLING FAN Rotates while transmitting. Also rotates while receiving depending on the setting inset mode. (p. ??)iANTENNA CONNECTOR [ANT2]Connects a 50 Ωantenna with a PL-259 connector and a50 Ωcoaxial cable for diversity reception.oEXTERNAL SPEAKER JACK 1 [SP-1]Connects an 8 Ωspeaker. Outputs both left and rightbands audio when no external speaker is connected to[SP-2]. See the table below for details.•Audio output power is more than 2.4 W.!0EXTERNAL SPEAKER JACK 2 [SP-2]Connects an 8 Ωspeaker. Outputs right band’s audio only. •Audio output power is more than 2.4 W.!1POWER RECEPTACLE [DC13.8V]Accepts 13.8 V DC ±15% with the supplied DC powercable.☞NOTE: DO NOT use a cigarette lighter socket as apower source when operating in a vehicle. The plugmay cause voltage drops and ignition noise may be su-perimposed onto transmit or receive audio.• Speaker informationConnected Left band audio Right band audiospeakerNo external Internal speaker (mixed audio)speakers[SP-1] only External speaker (mixed audio)[SP-2] only Internal speaker External speaker2 external External speaker via External speaker viaspeakers [SP-1] [SP-2]

111PANEL DESCRIPTION■Microphone (HM-133*)qVFO/LOCK KEY [VFO/LOCK]➥Push to select VFO mode. (p. 12)➥Push and hold for 1 sec. to turn the lock function ONand OFF. (p. 15)wPTT SWITCH➥Push and hold to transmit; release to receive.➥Switches between transmitting and receiving while theone-touch PTT function is in use. (p. 21)eUP/DOWN KEYS [Y]/[Z]➥Push either key to change operating frequency, mem-ory channel, set mode setting, etc. (pgs. 13, 29, 56)➥Push and hold either key for 1 sec. to start scanning.(p. 41)rACTIVITY INDICATOR➥Lights red while any key, except [FUNC] and [DTMF-S],is pushed, or while transmitting.➥Lights green while the one-touch PTT function is in use.tKEYPAD (pgs. 8, 9)yFUNCTION INDICATOR➥Lights orange while [FUNC] is activated—indicates thesecondary function of keys can be accessed.➥Lights green when [DTMF-S] is activated—DTMF sig-nals can be transmitted with the keypad.u2nd FUNCTION KEY [FUNC] iDTMF SELECT KEY [DTMF-S] (p. 50)oFUNCTION KEYS [F-1]/[F-2] (p. 66)Program and recall your desired transceiver conditions.!0BAND KEY [BAND] (p. 11)Push to select main band between left and right bands. !1MEMORY/CALL KEY [MR/CALL]➥Push to select memory mode. (p. 12)➥Push and hold for 1 sec. to select call channel. (p. 38)✔Important!All keys on the microphone function for the main band only. Mic elementqertwyuio!0!1

■Microphone keypad121PANEL DESCRIPTION12345678910111213141516171819KEY FUNCTION SECONDARY FUNCTION ( +key) OTHER FUNCTIONSSwitches between opening and closing thesquelch. (p. 16)Starts and stops scanning. (p. 41)Starts and stops priority watch. (p. 47)Selects high output power. (p. 20)Selects mid. output power. (p. 20)Selects low output power (p. 20)Selects minus duplex operation. (p. 24)Selects plus duplex operation. (p. 24)Selects simplex operation. (p. 24)Increases audio output level. (p. 16)In VFO mode enters operating band select-ing condition. (p. 12)In memory mode enters bank selectingcondition. (p. 35)Starts and stops tone scanning. (p. 55)Turns the one-touch PTT function ON andOFF. (p. 21)Turns the DTCS squelch ON. (p. 53)Turns the DTCS pocket beep function ON.(p. 53)Turns the DTMF memory encoder functionON. (p. 49)Turns the subaudible tone encoder ON.(p. 24)Turns the CTCSS pocket beep functionON. (p. 53)Turns the tone squelch function ON.(p. 53)Sends a 1750 Hz tone signal while pushingand holding. (p. 26)After pushing :Transmits the appropriateDTMF code. (pgs. 26, 50)When the DTMF memory en-coder is activated, push [0] to[9] to transmit the appropriateDTMF memory contents .(p. 50)

131PANEL DESCRIPTION➥Cancels frequency entry. (p. 13)➥Cancels the scan or priority watch. (pgs. 41, 47)➥Exit set mode. (p. 56)➥Enters set mode (p. 56)➥Advances the set mode selection orderafter entering set mode. (p. 56)➥Sets the keypad for numeral input.(p. 13)➥Reverses the set mode selection orderafter entering set mode. (p. 56)Adjusts the squelch level increments.(p. 16)Decreases audio output level. (p. 16)Adjusts the squelch level decrement. (p. 16)➥Selects a memory channel for program-ming. (p. 31)➥Advances the memory channel numberwhen continuously pushed after pro-gramming is completed. (p. 31)DTMF memory encoder function OFF.(p. 50)Turns the subaudible tone encoder, pocketbeep or CTCSS/DTCS tone squelch OFF.(pgs. 24, 53)Mutes the audio. (p. 21)•Mute function is released when any oper-ation is performed.Sends a 1750 Hz tone signal for 0.5 sec.(p. 26)Locks the digit keys on the keypad (includ-ing the A to D, # and Mkeys. (p. 15)After pushing :Transmits the appropriateDTMF code. (pgs. 26, 50)KEY FUNCTION SECONDARY FUNCTION ( +key) OTHER FUNCTIONS

■Optional Microphone (HM-154)qPTT SWITCHPush and hold to transmit; release to receive.wUP/DOWN KEYS [UP]/[DN]➥Push either key to change operating frequency, mem-ory channel, set mode setting, etc. (pgs. 13, 29, 56)➥Push and hold either key for 1 sec. to start scanning.(p. 41)eUP/DN LOCK SWITCHSlide to toggle [UP]/[DN] keys function ON and OFF.wqONOFFe141PANEL DESCRIPTION12345678910111213141516171819*A different microphonemay be supplied de-pending on version.

15SETTING A FREQUENCY2■PreparationDTurning power ON/OFF➥Push and hold [PWR] for 1 sec. to turn power ON andOFF.DMAIN bandThe IC-2820H can receive 144 MHz and 430(440) MHz bandsignals simultaneously. To activate all functions access or tochange frequency via the microphone, you must designateone band as the main band. The transceiver transmits a sig-nal on the main band only.➥Push the desired band’s [MAIN•BAND] to select the mainband.•“Q” indicates the main band.➥Push [BAND] to toggle the main band betweenleft and right bands.DOperating frequency band selectionIn the default condition, or after resetting the CPU, 2 m bandis assigned in the left band, 70 cm band is assigned in theright band. However, the 2 m band can also be assigned intothe right, and 70 cm band can also be assigned into the leftband.qPush and hold the desired band’s [MAIN•BAND] for 1 sec.•Frequency band initial appears.wRotate the same band’s [DIAL] to select the desired fre-quency band.•Pushing [Y]/[Z] on the microphone also selects the band.ePush the [MAIN•BAND] to return to frequency indication inthe selected frequency band.[DIAL][MAIN•BAND]Frequency band initial is displayed.BAND[MAIN•BAND][PWR]Note that in this manual, sections beginning with a micro-phone icon (as at left), designate operation via the HM-133microphone.

162SETTING A FREQUENCY12345678910111213141516171819zPush [BAND] to select main band.xPush and hold [BAND] for 1 sec. to enter fre-quency band selecting condition.•The frequency band is displayed.cPush [Y]/[Z] to select the desired frequencyband.vPush [CLRA(MW)] to exit the condition, and re-turn to frequency indication.✔About extra frequency bands— USA and General versions onlyIn addition to the 2 m and 70 cm ham bands, the IC-2820HUSA and General versions have extra frequency bands foreach left and right bands as follow.See the speciﬁcations for the available frequency bands fordetails.*The frequency band initials are default indication only. Once the op-erating frequency is set in the band, the initial indication will bechanged. ✔: Available, —: Not availableDVFO and memory modesThe transceiver has 2 basic operating modes: VFO mode andmemory mode. Select VFO mode ﬁrst to set an operating fre-quency.➥Push the desired band’s [V/MHz•SCAN] to select VFOmode.•When VFO mode is already selected, the digit below 10 MHz(the digit below 1 MHz or 100 kHz disappear depending on ver-sions) disappear. In this case, push [V/MHz•SCAN] again (ortwice or 3 times depending on version).➥Push [M/CALL•MW] to select memory mode.•“X” indicator appears when memory mode is selected.➥Push [VFO/LOCK] to select VFO mode.➥Push [MR/CALL] to select memory mode.•The microphone controls the main band only. Push[BAND] to toggle the main band, then push[VFO/LOCK] or [MR/CALL], if necessary.VFO/LOCK[M/CALL•MW]VFO mode is selected. “X” indicator appears whenmemory mode is selected.[V/MHz•SCAN]BANK[Y]/[Z]Frequency Left band Right bandband initial*127 ✔✔136 ✔✔146 ✔✔220 ✔—375 ✔✔440 ✔✔500 ✔✔900 —✔

172SETTING A FREQUENCY■Using the tuning dialqRotate the desired band’s [DIAL] to set the frequency.•If VFO mode is not selected, push the same band’s[V/MHz•SCAN] to select VFO mode.•The frequency changes in the selected tuning steps. (p. ??)wTo change the frequency in 1 MHz (10 MHz for some versions)steps, push [V/MHz•SCAN], then rotate [DIAL].•Pushing and holding [V/MHz•SCAN] for 1 sec. starts scan func-tion. If scan starts, push [V/MHz•SCAN] again to cancel it.■Using the [Y]/[Z] keys➥Push [Y] or [Z] to select the desired frequency.•Push [BAND] to select the desired band (left or right)as the main band in advance.•Pushing and holding [Y]/[Z] for 1 sec. activates ascan. If scan starts, push [Y]/[Z] or [CLRA(MW)] tocancel it.■Using the keypadThe frequency can be directly set via numeral keys on the mi-crophone.zPush [BAND] to select the desired band (left orright) as the main band.•Push [VFO/LOCK] to select VFO mode, if necessary.xPush [ENTC(T-OFF)] to activate the keypad fordigit input.cPush 6 keys to input a frequency.•When a digit is mistakenly input, push [ENTC(T-OFF)]to clear the input, then repeat input from the 1st digit.•Pushing [CLRA(MW)] clears input digits and retrievesthe frequency.PushPushPushPush[EXAMPLE]: Setting frequency to 145.3625 MHz.ENTCYZWhile 1 MHz tuning step is selected, the digit below 100kHz disappear.While 10 MHz tuning step is selected, the digit below 1 MHz disappear.[V/MHz•SCAN][DIAL]

182SETTING A FREQUENCY12345678910111213141516171819■Tuning step selectionTuning steps are the minimum frequency change incrementswhen you rotate [DIAL] or push [Y]/[Z] on the microphone.Independent tuning step for the left and right, as well as eachfrequency bands can be set for individual tuning convenience.The following tuning steps are available.•5 kHz* •6.25 kHz* •10 kHz •12.5 kHz•15 kHz* •20 kHz •25 kHz •30 kHz•50 kHz*Not selectable in 900 MHz band.☞NOTE: For convenience, select a tuning step that matchesthe frequency intervals of repeaters in your area.qPush the desired band’s [MAIN•BAND] to select the mainband.•Push the same band’s [V/MHz•SCAN] to select VFO mode, ifnecessary.wPush [F•]to display the function guide.ePush [TS](M/CALL•MW) (Left band’s) to enter tuning stepset mode.rRotate the same band’s [DIAL] to select the desired tun-ing step.tPush [F•]to exit tuning step set mode.[TS](M/CALL•MW) [F• ]

192SETTING A FREQUENCY■Lock functionsTo prevent accidental frequency changes and unnecessaryfunction access, use the lock function. The transceiver has 2different lock functions.DFrequency lockThis function locks dials and keys electronically and can beused together with the microphone lock function.➥Push and hold [F•]for 1 sec. to turn the lock functionON and OFF.•[PTT], [DUP•MONI] (monitor function only), [VOL], [SQL] and[MAIN•BAND] (main band selection only) can be used while thechannel lock function is in use. Also, TONE-1, TONE-2, DTMFtones or DTMF memory contents can be transmitted from the mi-crophone.➥Push and hold [VFO/LOCK] for 1 sec. toturn the lock function ON and OFF.DMicrophone keypad lockThis function locks the microphone keypad.➥Push [FUNC] then [SQLZD(16KEY-L)] to turnthe microphone keypad lock function ON andOFF.•[PTT], [VFO/LOCK], [MR/CALL], [BAND], [Y], [Z],[F-1], [F-2], [DTMF-S] and [FUNC] on the micro-phone can be used.•All keys on the transceiver can be used.•The keypad lock function is released when thepower is turned OFF then ON again.16KEY-LVFO/LOCK[F• ] “ ” appear while the lock function is activated.

203BASIC OPERATION12345678910111213141516171819■ReceivingqSet the audio level for the main band.➥Push the desired band’s [MAIN•BAND].➥Push and hold [DUP•MONI] for 1 sec. to open thesquelch.➥Rotate the main band’s [VOL] to adjust the audio level.➥Push the [DUP•MONI] to close the squelch.wSet the squelch level.➥Rotate the main band’s [SQL] fully counterclockwise inadvance, then rotate the [SQL] clockwise until the noisejust disappears.•When interference due to strong signals is received, rotatethe [SQL] clockwise again for attenuator operation. (p. 17)eSet the operating frequency in the main band. (pgs. 11–13)rWhen receiving a signal on the set frequency, squelchopens and the transceiver emits audio.•“BUSY” appears and the S/RFindicator shows the relativesignal strength for the re-ceived signal.✔CONVENIENT!The main band’s audio and squelch level can alsobe adjusted with [VOLY(TONE-1)]/[VOLZ0(TONE-2)]and [SQLYD(MUTE)]/[SQLZ#(16KEY-L)], respectively.•“VOL” for audio or “SQL” for squelch appears during set.■Transmitting☞NOTE: To prevent interference, listen on the channel be-fore transmitting by pushing and holding [DUP•MONI] for1 sec., or [MONI1(BANK)] on the microphone.qSelect the main band. (p. 11)wSet the operating frequency. (pgs. 11–13)•Select output power if desired. See section at right for details.ePush and hold [PTT] to transmit.•“$” appears.•The S/RF indicator shows the output power selection.•A one-touch PTT function is available. See p. ?? for details.•“ ” appears on the sub band screen according to the se-lected frequency band.rSpeak into the microphone using your normal voice level.•DO NOT hold the microphone too close to your mouth or speaktoo loudly. This may distort the signal.tRelease [PTT] to return to receive.IMPORTANT! (for 50 W transmission):The IC-2820H is equipped with protection circuit to protectthe power amplifier circuit from high SWR (Standing WaveRatio) and temperature. When a high SWR antenna or noantenna is connected, or when the transceiver temperaturebecomes extremely high, the transceiver reduces transmitoutput power to 15 W (approx.) automatically. CAUTION: Transmitting without an antenna will damagethe transceiver.Show set level.SQLY/ZD/#VOLY/ZM/0Appears when receiving a signal.

213BASIC OPERATION■Selecting output powerThe transceiver has 3 output power levels to suit your oper-ating requirements. Low output powers during short-distancecommunications may reduce the possibility of interference toother stations and will reduce current consumption.➥Push [LOW•PRIO] several times to select the outputpower.*approx.•The output power can be changed while transmitting.The microphone can also be used to select output power.➥Push [HIGH4(DTCS)] for high output power;[MID5(DTCSS)] for middle output power; and[LOW6(DTMF)] for low output power.•The output power can be changed via the microphoneduring receive only.■Operating mode selectionOperating modes are determined by the modulation of theradio signals. The transceiver has total 5 operating modes(FM, FM-N, AM, AM-N and DV modes). The mode selection isstored independently for each band and memory channel.Typically, AM mode is used for the air band (118–136.995 MHz).qPush [F•]to display the function guide.wPush [MODE](V/MHz•SCAN) (Left band’s) several times toselect the desired operating mode from FM, FM-N, AM,AM-N and DV.**DV mode is available only when the optional UT-123 is installed.HIGH4MID5LOW6S/RF INDICATOR POWER OUTPUTVHF/UHF Taiwan50 W/50 W 25 W15 W*/15 W* 15 W*5 W*/5 W* 5 W*High:Mid:Low:

223BASIC OPERATION12345678910111213141516171819■Squelch attenuatorThe transceiver has an RF attenuator related to the squelchlevel setting. Approx. 10 dB attenuation is obtained at maxi-mum setting. The squelch attenuator allows you to set a minimum signallevel needed to open the squelch. The attenuator function canbe deactivated in set mode.➥Rotate [SQL] clockwise past the 12 o’clock position to ac-tivate the squelch attenuator.•Attenuation level can be adjusted up to 10 dB (approx.) between12 o’clock and fully clockwise position.NOTE: The squelch attenuator functions even when themonitor function is in use. Thus set the [SQL] controlwithin 10 to 12 o’clock position is recommended whenusing the monitor function.DSquelch attenuator settingqPush [F•]to display the function guide.wPush [MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.eRotate the main band’s [DIAL] to select “SET MODE,”then push [MAIN•BAND] to enter set mode.rRotate [DIAL] to select “AUTO ATT” then push[MAIN•BAND].tRotate [DIAL] to turn the squelch attenuator function ONand OFF, then push [MAIN•BAND]•Select “OFF” to deactivate the squelch attenuator function.yPush [BACK](V/MHz•SCAN) (Right bnd’s) 2 times to exit setmode.[F• ][MENU]Squelch isopen.SquelchattenuatorSquelch threshold Shallow DeepNoise squelch

233BASIC OPERATIONThe IC-2820H can simultaneously receive two signals on thesame band, such as 144 MHz band, using the para-watchfunction.qPush and hold either the left or right band’s [MAIN•BAND]for 1 sec. to select the frequency band selecting condition.wRotate the same band’s [DIAL] to select the desired fre-quency band.ePush the [MAIN•BAND] to return to frequency indication.rSet the desired frequency.tRepeat the steps qto rfor the other band (left or right).To activate the para-watch function from the HM-133, enterthe desired frequencies for each the left and right bands usingthe direct frequency input capability via the keypad; or per-form the following operation.zPush [BAND] to select the desired band (left orright) as the main band.•Push [VFO/LOCK] to select VFO mode, if necessary.xPush [ENTC(T-OFF)] to activate the keypad fordigit input.cPush 6 keys to input a frequency.•When a digit is mistakenly input, push [ENTC(T-OFF)]to clear the input, then repeat input from the 1st digit.vPush [VFO/LOCK] to change main band, thenrepeat the steps zto cfor the other band.NOTE:•Memory channels are common for the left and right band.•Transmitting during the para-watch operation is possible.However, the sub band’s reception is deactivated duringtransmit as shown in the example at left.ENTC[Example]Can be switched between VHF and UHF■V/V, U/U simultaneous receive (Para-watch)

243BASIC OPERATION12345678910111213141516171819■Sub band mute/busy beepThe sub band mute function automatically cuts out sub bandaudio signals when both main and sub band signals are re-ceived simultaneously.While operating on the main band, a beep sounds to informyou that a signal was received on the sub band. qPush [F•]to display the function guide.wPush [MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.eRotate [DIAL] to select “SOUNDS” then push[MAIN•BAND].rRotate [DIAL] to select “SUB BAND MUTE” or “SUBBAND BEEP” then push [MAIN•BAND].tRotate [DIAL] to turn the sub band mute or sub band beepfunction ON and OFF then push [MAIN•BAND].•Select “OFF” to deactivate the squelch attenuator function.yPush [BACK](V/MHz•SCAN) (Right bnd’s) 2 times to exit setmode.■Monitor functionThis function is used to listen to weak signals without disturb-ing the squelch setting. ➥After pushing [MAIN•BAND],push and hold [DUP•MONI]for 1 sec. to open the squelch.•“BUSY” blinks.•Push [DUP•MONI] again to cancel the function.➥Push [MONI1(BANK)] to open the squelch.•Push [BAND] to select the desired band (left or right)as the main band in advance. •Push [MONI1(BANK)] again to cancel the function.NOTE: When the [SQL] adjustment is set too far clock-wise, (12–5 o’clock position) the squelch attenuator is acti-vated. To monitor weak signals on the operating frequency,deactivate the squelch attenuator function. See pg. ?? fordetails.MONI1[DUP•MONI][F• ][MENU]

253BASIC OPERATION■Single band operationDDSingle band/Dualwatch operationDualwatch operation monitors two frequencies simultane-ously. The IC-2820H has two independent receiver circuits:left band, and right band (available frequencies, operating modeand functions are different depending on bands).Single band operation is useful when only one frequency isbeing watched. qPush [F•]to display the function guide.wPush [SNGL](M/CALL•MW) (Right band’s) to select thesignle band operation mode.•Both left and right band’s [DIAL], [MAIN•BAND], [VOL], [SQL],[V/MHz•SCAN] and [M/CALL•MW] can be used for operation.ePush [F•]to display the function guide, then push[DUAL](M/CALL•MW) (Right band’s) to return to dual watchoperation mode.DDDiversity operationThe diversity receiving compares the receiving signal strengthfrom two different antennas, ANT1 and ANT2, and automati-cally selects the strongest signal. This feature is useful whenyou are listening in a moving vehicle or the transmitting sta-tion itself is moving. Diversity receiving is available in127 MHz, 136 MHz, 146 MHz, 375 MHz, 440 MHz and500 MHz bands only.qPush [F•]to display the function guide.wPush [MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.eRotate [DIAL] to select “SET MODE” then push[MAIN•BAND] to enter set mode.rRotate [DIAL] to select “DIVERSITY” then push[MAIN•BAND].tRotate [DIAL] to select ON, then push [MAIN•BAND].yPush [BACK](V/MHz•SCAN) (Right band’s) to exit setmode.

263BASIC OPERATION12345678910111213141516171819When the diversity operation is in use, connect the samegrade antenna, connected to [ANT1], shuld be connectedto [ANT2].➥During single band operation with the diversity function ON,the diversity indicator appears as below.With the squelch open in FM mode while receiving a weaksignal, diversity receiving does not work properly.■One-touch PTT functionThe PTT switch can be operated as a one-touch PTT switch(each push toggles between transmit/receive). Using thisfunction you can transmit without pushing and holding thePTT switch.To prevent accidental, continuous transmissions with thisfunction, the transceiver has a time-out timer. See p. ?? fordetails.zPush [FUNC] then [PRIO3(PTT-M)] to turn theone-touch PTT function ON.•The activity indicator lights green.xPush [PTT] to transmit and push again to re-ceive.•A beep sounds when transmission is started and along beep sounds when returning to receive.cPush [FUNC] then [PRIO3(PTT-M)] to turn theone-touch PTT function OFF.•The activity indicator goes out.PTT-MWhile [ANT2] is selected;While [ANT2] is selected;Diversity indicator appears. [M/CALL•MW]

273BASIC OPERATION■Audio mute functionThis function temporarily mutes the audio without disturbingthe volume setting. (microphone only)➥Push [FUNC] then [SQLYD(MUTE)] to muteaudio signals.•The “” indicators appear.•Push [CLRA(MW)] (or any other key) to cancel thefunction.■Band scopeThe band scope function allows you to visually check a spec-iﬁed frequency range around the center frequency. About the sweep steps: The speciﬁed tuning step in eachfrequency band (in VFO mode) or programmed tuning step(in memory mode) is used during sweep.Sweep markerBand scope indicationSweep step indicationThe highlighted cursor indication[M/CALL•MW][DUP•MONI][F• ] [DIAL] “ ” indicators appearMUTE

283BASIC OPERATION12345678910111213141516171819DDSingle sweepqSet the desired frequency as band scope center frequency.wPush [F•]to display the function guide.ePush [SCP](DUP•MONI) to start a single sweep.•1 short beep sounds.•Signal conditions (strengths) appear starting from the lower edgeof the range.rRotate [DIAL] to set the highlighted cursor to the desiredsignal and set the frequency of the signal.tPush [F•]to display the function guide, then push[CLR](LOW•PRIO) to clear the band scope indication.DDContinuous sweepqSet the desired frequency as band scope center frequency.wPush [F•]to display the function guide.ePush and hold [SCP](DUP•MONI) for 1 sec. to start con-tinuous sweep.•1 short and 1 long beeps sound.•Signal conditions (strengths) appear starting from the center ofthe range.rTo stop sweeping, push [F•]to display the functionguide, then push [SCP](DUP•MONI).tPush [F•]to display the function guide, then push[CLR](LOW•PRIO) to clear the band scope indication.The receive audio during sweeping can be muted insounds set mode. See page 102 for details.DDMonitoring a signalIf you find a signal that you want to monitor during/aftersweep, you can monitor the signal with the following opera-tion. qPush [F•]to display the function guide, then push[SCP](DUP•MONI) to cancel the continuousl sweep, if nec-essary.wRotate [DIAL] to tune into the desired signal.ePush [CENT](TONE•DTMF) to return to the center fre-quency.

REPEATER OPERATION429■GeneralRepeaters allow you to extend the operational range of yourradio because a repeater has much higher output power thanthe typical transceiver.Normally, a repeater has indipendent frequencies for each re-ceiver and transmitter.A subaudible tone may also be required to access a repeaterReference amateur radio hand books and local ham maga-zines for details of local repeaters such as repeater input/out-put frequencies and locations.•Repeater operation ﬂow chart•The IC-2820H USA version has the auto repeater function. Thus thesteps 3 and 4 may not be necessary, depending on the setting.•Repeater settings can be stored into a memory channel. Step 3:Set the duplex (shifting) direction (– duplex or +duplex).- Set the offset frequency (shifting value), if required.Step 4:Set the subaudible tone (repeater tone) encoder function ON.- Set the subaudible tone frequency, if required.Step 1:Set the desired band to operate the repeater.Step 2:Set the desired receive frequency (repeater output frequency).Repeater example;Receives the 444.540 MHz signal and the detected audio signals are transmitted on 449.540 MHz simul-taneously.Station A:Tx: 444.540 MHzRx: 449.540 MHzStation B:Tx: 444.540 MHzRx: 449.540 MHz

304REPEATER OPERATION12345678910111213141516171819■Accessing a repeaterqSet the receive frequency (repeater output frequency) onthe main band. (pgs. ??–??)wPush [DUP•MONI] one or two times, to select minus du-plex or plus duplex.•“DUP–” or “DUP+” appears to indicate the transmit frequency forminus shift or plus shift, respectively.•When the auto repeater function is turned ON (available for theUSA version only), steps wand eare not necessary. (p. ??)ePush [TONE•DTMF] several times to turn ON the subaudi-ble tone encoder, according to repeater requirements.•“TONE” appears •88.5 Hz is set as the default; refer to p. ?? for tone frequency set-tings.•When the repeater requires a different tone system, see p. ??.rPush and hold [PTT] to transmit.•The displayed frequency automatically changes to the transmitfrequency (repeater input frequency).•If “OFF” appears, conﬁrm that the offset frequency (p. ??) is setcorrectly.tRelease [PTT] to receive.yPush [DUP•MONI] to check whether the other station’stransmit signal can be received directly.uTo return to simplex operation, push [DUP•MONI] once ortwice, to clear the “DUP–” or “DUP+” indicator.iTo turn OFF the subaudible tone encoder, push[TONE•DTMF] several times until no tone indicators ap-pear.While receiving While transmitting[TONE•DTMF]“TONE” appear[DUP•MONI]“DUP–” or “DUP+” appear

314REPEATER OPERATIONzSet the receive frequency (repeater output fre-quency) on the main band. (pgs. 11–13)xPush [DUP–7(TONE)] to select minus duplex;push [DUP+ 8(TSQLS)] to select plus duplex.cPush [FUNC] then [DUP–7(TONE)] to turn ONthe subaudible tone encoder according to re-peater requirements.•Refer to p. 25 for the tone frequency setting.•When the repeater requires a different tone system,see p. 26.vPush and hold [PTT] to transmit.bRelease [PTT] to receive.nPush [MONI1(BANK)] to check whether theother station’s transmit signal can be receiveddirectly.mPush [SIMP9(TSQL)] to return to simplex opera-tion.•“DUP” or “DUP–” indicator disappears.,To turn OFF the subaudible tone encoder, push[FUNC] then [ENTC(T-OFF)].SIMP9Push ,then .PushPushDUP–7DUP+8

324REPEATER OPERATION12345678910111213141516171819■Subaudible tones (Encoder function)DSubaudible tonesqSelect the main band, mode/channel you wish to set thesubaudible tones to, such as VFO mode or memory/callchannel.wPush [F•]to display the function guide.ePush [MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.rRotate [DIAL] to select “DUP/TONE…” then push[MAIN•BAND].tRotate [DIAL] to select “REPEATER TONE” then push[MAIN•BAND].yRotate [DIAL] to select and set the desired subaudible fre-quency, then push [MAIN•BAND].uPush [BACK](V/MHz•SCAN) (Right band’s) twice to exitDUP/TONE set mode.☞NOTE: The subaudible tone encoder frequency can be setin a memory/call channel temporarily. However, the set fre-quency is cleared once another memory channel or VFOmode is selected. To store the tone frequency permanently,overwrite the channel information.zSet the main band, mode/channel you wish toset the subaudible tones to, such as VFO modeor memory/call channel.•The subaudible tone frequency is independently pro-grammed into each mode or channel.xPush [SETB(D-OFF)] to enter MENU screen.cPush [Y] or [Z] to select “DUP/TONE…” thenpush [SETB(D-OFF)].vPush [Y] or [Z] to select “REPEATER TONE”then push [SETB(D-OFF)].bPush [Y] or [Z] to select the desired subaudibletone frequency then push [SETB(D-OFF)].nPush [CLRA(MW)] to return VFO mode.•Subaudible tone frequency list (unit: Hz)67.069.371.974.477.079.782.585.488.591.594.897.4100.0103.5107.2110.9114.8118.8123.0127.3131.8136.5141.3146.2151.4156.7159.8162.2165.5167.9171.3173.8177.3179.9183.5186.2189.9192.8196.6199.5203.5206.5210.7218.1225.7229.1233.6241.8250.3254.1Push SETB[V/MHz•SCAN] [F• ] [DIAL] [MAIN•BAND]

334REPEATER OPERATIONDDTMF tones➥Push [DTMF-S], then push the keys of the de-sired DTMF digits.•The function indicator lights green.•0–9, A–D, ✱(E) and #(F) are available.•When “1” is displayed, cancel the DTMF memoryencoder in advance. (p. 50)•Push [DTMF-S] again to return the keypad to nor-mal function control.✔For your convenient!The transceiver has 16 DTMF memory channels for au-topatch operation. See p. 48 for details.D1750 Hz toneThe microphone has 1750 Hz tone capability, used for ringtone when calling, etc.zPush [FUNC].•The function indicator lights orange.xPush [✱(TONE-1)] to transmit a 1750 Hz tonecall signal for 0.5 sec.; push and hold[0(TONE-2)] to transmit a 1750 Hz tone callsignal for an arbitrary period.•The function indicator goes out automatically.Push ,then or .TONE-1TONE-2then push desired keys.Push ,DTMF-S

344REPEATER OPERATION12345678910111213141516171819■Offset frequencyWhen communicating through a repeater, the transmit fre-quency is shifted from the receive frequency by an amountdetermined by the offset frequency. Independent offset frequencies can be set for each operatingfrequency band.qPush [MAIN•BAND] to select the desired band (left or right)as the main band.wSelect the desired mode/channel you wish to set the offsetfrequency to, such as VFO mode or memory/call channel.rPush [F•]to display the function guide then push[MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.tRotate the [DIAL] to select “DUP/TONE…”, then push[MAIN•BAND].yRotate the [DIAL] to select “OFFSET FREQ” item, thenpush [MAIN•BAND].uRotate the main band’s [DIAL] to set the desired offset fre-quency.iPush [BACK](V/MHz•SCAN) (Right band’s) twice to exitDUP/TONE set mode.zPush [BAND] to select the desired band (left orright) as the main band.•Enter the desired frequency via the keypad if neces-sary.xSelect the desired mode/channel you wish toset the offset frequency to, such as VFO modeor memory/call channel.•The offset frequency can be independently pro-grammed into each mode or channel.cPush [SETB(D-OFF)] to enter MENU screen.vPush[Y] or [Z] to select “DUP/TONE…” thenpush [SETB(D-OFF)].vPush[Y] or [Z] to select “OFFSET FREQ” thenpush [SETB(D-OFF)].bPush [Y] or [Z] to set the desired offset.•Direct frequency entry from the keypad is not possi-ble.nPush [CLRA(MW)] to exit set mode.☞NOTE: The offset frequency can be set in amemory/call channel temporarily. However, theset frequency is cleared once another memorychannel or VFO mode is selected. To store theoffset frequency permanently, overwrite thechannel information.SETB[V/MHz•SCAN] [F• ] [DIAL] [MAIN•BAND]

354REPEATER OPERATIONThe U.S.A. and Korean versions automatically use standardrepeater settings (duplex ON/OFF, duplex direction, tone encoderON/OFF) when the operating frequency falls within or outsideof the general repeater output frequency range. The offsetand repeater tone frequencies are not changed by the autorepeater function, reset these frequencies, if necessary.DFrequency range and offset direction•U.S.A. version•Korean versionqPush [F•]to display the function guide.wPush [MENU](V/MHz•SCAN) (Right band’s) to enter MENUscreen.eRotate [DIAL] to select “SET MODE” then push[MAIN•BAND].rRotate [DIAL] to select “AUTO REPEATER” then push[MAIN•BAND].tRotate [DIAL] to select the auto repeater setting.[U.S.A. version]:•“ON1”: Activates duplex only. (default)•“ON2”: Activates duplex and tone.•“OFF”: Auto repeater function is turned OFF.[Korean version]:•“ON”: Activates duplex and tone. (default)•“OFF”: Auto repeater function is turned OFF.yPush [BACK](V/MHz•SCAN) (Right band’s) twice to exitfrom set mode.Auto Repeater set: ON1(USA version)FREQUENCY RANGE SHIFT DIRECTION439.000–440.000 MHz “DUP–” appearsFREQUENCY RANGE SHIFT DIRECTION147.000–147.395 MHz “DUP+” appears442.000–444.995 MHz “DUP+” appears447.000–449.995 MHz “DUP–” appears145.200–145.495 MHz146.610–146.995 MHz “DUP–” appears■Auto repeater U.S.A./KOREAN versions only

364REPEATER OPERATION12345678910111213141516171819

37MEMORY OPERATION5■General descriptionThe transceiver has 522 memory channels including 20 scanedge memory channels (10 pairs), and 2 call channels. Eachof these channels can be individually programmed with oper-ating frequency (pgs. ??–??), duplex direction (p. ??) and offset(p. ??), subaudible tone encoder or tone squelch and its tonefrequency (pgs. ??, ??, ??, ??) and skip information* (p. ??). In addition, a total of 26 memory banks, A to Z, are availablefor usage by group, etc.*except for scan edge memory channels.■Memory channel selectionDUsing the tuning dialqPush the desired band’s[M/CALL•MW] severaltimes to select memorymode.•“X” indicator appearwRotate the same band’s[DIAL] to select the de-sired memory channel.•Programmed memorychannels only can be se-lected.DUsing the [Y]/[Z] keyszPush [BAND] to select the desired band asthe main band.xPush [MR/CALL] to select memory mode.cPush [Y] or [Z] to select and set the desiredmemory channel.•Pushing and holding [Y]/[Z] for 1 sec. activatesa scan.•If scan is activated, push [Y]/[Z] again or push[CLRA(MW)] to stop it.DUsing the keypadzPush [BAND] to select the desired band asthe main band.xPush [MR/CALL] to select memory mode.cPush [ENTC(T-OFF)] to activate the keypadfor numeral input.vPush 3 appropriate digit keys to input a chan-nel number. •Blank channel can be selected.•Push only 1 appropriate digit key, [VOLY0(TONE-2)] to [SIMP9(16-KEY-L)]] then push [MM(TONE-1)]or [SQLZ#(16KEY-L)] to select scan edge chan-nels. “MM” and “#” can be used for “A” and “b” re-spectively.MR/CALLY/ZMR/CALLY/Z[M/CALL•MW][DIAL]åXßappears

VFO settings, including MENU group’s contents such as sub-audible tone frequency, offset, can be programmed into amemory channel.qSet the desired frequency in the desired band (left or right). ➥Push the desired band’s [V/MHz•SCAN] to select VFOmode.➥Set the frequency using the same band’s [DIAL].➥Set other data (e.g. tone frequency, duplex information, etc.)if required.wPush and hold the same band’s [M/CALL•MW] for 1 sec.•2 beeps sound•“X” indicator and the memory channel number blink.eRotate the [DIAL] to select the memory channel to be pro-grammed.•Memory channels not yet programmed are blank.rPush and hold the same band’s [M/CALL•MW] for 1 sec.to program.•3 beeps sound•Memory channel number automatically increases when contin-uing to push [M/CALL•MW] after programming.✔CONVENIENTMemory programming can be performed in versatile wayse.g. memory channel to the same (or different) memory chan-nel, memory channel to the call channel, etc.385MEMORY OPERATION12345678910111213141516171819■Programming a memory channel[EXAMPLE]: Programming 145.870 MHz into memory channel 20 (blank channel) via the controller.Push Rotate for setting frequency, etc. Push and hold for 1 sec.Rotate Push and hold for 1 sec. and continue to push ➠Beep“V/MHzSCANM/CALLMWM/CALLMWBANDMAINBANDMAINBeepBeepBeep“““““BeepBeep“““““

DProgramming a memory channel via the microphoneThe microphone can also be used to program mem-ory channels.zSet the desired frequency in VFO mode.➥Push [VFO/LOCK] to select VFO mode.➥Set the frequency using the keypad.➥Set other data (e.g. offset frequency, duplex direction, sub-audible tone encoder ON/OFF and its frequency), if neces-sary.xPush [MR/CALL] to enter memory mode.cPush [ENTC(T-OFF)], then set the desired memory chan-nel using the keypad.vPush [VFO/LOCK] to select VFO mode.bPush [FUNC] then push and hold [CLRA(MW)] for 1 sec. toprogram.➥3 beeps may sound and the VFO contents (including thesubaudible tone frequency, etc.) are programmed.➥Memory channel number increases when continuing topush [CLRA(MW)] after programming.MW395MEMORY OPERATION[EXAMPLE]: Programming 145.870 MHz into memory channel 20 (blank channel) via the microphone.Beep“Beep“BeepBeepBeep“““““Push ,Push then for 1 sec. and continue to push ➠MR/CALLPush then Push Push

405MEMORY OPERATION12345678910111213141516171819■Memory bank selectionThe IC-2820H has a total of 26 banks (A to Z). All memorychannels, regular, scan edges and call channels are assignedinto the desired bank for easy memory management.qPush the desired band’s [M/CALL•MW] several times toselect memory mode, if desired.wPush and hold the same band’s [MAIN•BAND] for 1 sec. • The memory channel number blinks.eRotate the same band’s [DIAL] to select the desired bank,A to Z.•Banks that have no programmed contents are skipped.rPush the [MAIN•BAND] to set the bank group.•Bank initial and bank channel stop blinking.tRotate the same band’s [DIAL] to select the bank channel.yTo return to regular memory mode, push and hold the[MAIN•BAND] for 1 sec. then rotate the [DIAL] to selectmemory channel number indication.zPush [MR/CALL] to select memory mode, if de-sired.xPush [FUNC] then [MONI1(BANK)] to selectmemory bank condition.Or, push and hold [BAND] for 1 sec. to selectmemory bank condition.•Memory channel blinkscPush [Y]/[Z] to select the desired bank, A to Z.•Only programmed memory bank can be selected.vPush [CLRA(MW)] to set the bank.Or, push [BAND] to set the bank.•Bank initial and bank channel stops blinking.bPush [Y]/[Z] to select the desired contents inthe bank.•No channel numbers are displayed for memory bankoperation.nTo return to regular memory condition, push[FUNC], [MONI1(BANK)] then push [Y]/[Z] toselect memory channel number indication.Or, push and hold [BAND] for 1 sec., then push[Y]/[Z] to select memory channel number indi-cation.BANK[Y]/[Z]Bank initial and bankchannel blinkEnter the memory bank condition mode.[MAIN•BAND]

415MEMORY OPERATION■Memory bank settingqPush the desired band’s [M/CALL•MW] several times toselect memory mode, then rotate the same band’s [DIAL]to select the desired memory channel.wPush and hold the same band’s [M/CALL•MW] for 1 sec. •“X” and memory number indication blinks.ePush [SEL](V/MHz•SCAN) (Left band’s) several times to se-lect “BANK” setting stand-by condition.•“X” indicator blinks.rPush [EDIT](M/CALL•MW) (Right band’s) to edit.•“X” and 1st digit blink.tRotate the same band’s [DIAL] to select the desired bankgroup.•A to Z bank groups available.yPush [>](M/CALL•MW) (Left band’s) then rotate [DIAL] toselect the desired bank channel.•“X” and last 2 digits blink.uPush [BACK](V/MHz•SCAN) (Right band’s) to set the bankinitial and channel number.•“X” indicator blinks.iPush and hold [S.MW](M/CALL•MW) (Left band’s) for 1 sec.to overwrite the memory channel to store the memory banksettings.oRepeat steps qto ito set another memory channel intothe same or another bank.

$425MEMORY OPERATION12345678910111213141516171819■Programming memory/bank/scan nameEach memory channel can be programmed with an alphanu-meric channel name for easy recognition and can be indi-cated independently by channel. Names can be a maximumof 8 characters— see the table right below for available char-acters.qSelect the desired memory channel to be programmed.➥Push [M/CALL•MW] several times to select memorymode, then rotate the same band’s [DIAL] to select thedesired memory channel.wPush and hold the same band’s [M/CALL•MW] for 1 sec.to enter select memory write mode.•“X” indicator and the memory channel number blink.ePush [SEL](V/MHz•SCAN) (Left band’s) several times to se-lect programming the name conditions.“BANK”: The memory bank “B NAME”: The bank name (appears only when the selectedmemory bank is edited into a bank)“M NAME”: The memory name“S NAME”: The scan name (appears only when a scan edgechannel is selected)•Frequency readouts disappear.rPush [EDIT](M/CALL•MW) (Right band’s) to edit.•“X” indicator and cursor blinks.tRotate the same band’s [DIAL] to select the desired char-acter.•The selected character blinks.•Push [Aa](TONE•DTMF) to turn the character group from al-phabetical characters capital letters or lower case letters.•Push [12](M/CALL•MW) (Right band’s) to turn the character groupfrom numbers or symbols.•Push [>](M/CALL•MW) (Left band’s) to move the cursor right;push [<](V/MHz•SCAN) (Left band’s) to move the cursor left. •Push [CLR](DUP/MONI) to clear the selected character.yRepeat steps eand tuntil the desired channel name isprogrammed.uPush [BACK](V/MHz•SCAN) (Right band’s) to set the name.yPush and hold [S.MW](M/CALL•MW) (Right band’s) for1 sec. to overwrite the memory channel to store the mem-ory name.NOTE: Only one bank name can be programmed intoeach bank. Therefore, the previously programmed bankname will be displayed when bank name indication is se-lected. Also, the programmed bank name is assigned forthe other bank channels automatically.DDAvailable charactersABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789(Space)! ''#$%&'()*+,-./:;<=>?@[\]^_`{|}~$

ICOM orporated 297000 Scanning Receiver User Manual

ICOM Incorporated Scanning Receiver Users Manual

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