AFJIC-T81A

INSTRUCTION MANUAL 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 cause undesired operation. iT81A/E MULTIBAND FM TRANSCEIVER IC-T81A/E Manual 98.12.16 4:39 PM Page A (1,1) Versions of the IC-T81A/E which display the “CE” sym- bol on the serial number seal, comply with the ETSI specification ETS300 684 (EMC product standard for Commercially Available Amateur Radio Equipment). ii IMPORTANT READ A L LINSTRUCTIONS carefully and com- pletely before using the transceiver. S AVE THIS INSTRUCTION MANUAL—This in- struction manual contains important operating instructions for the IC-T81A/E. EXPLICITDEFINITIONS The explicit definitions below apply to this instruction manual. CAUTIONS RWARNING! NEVER hold the transceiver so that the antenna is very close to, or touching exposed parts of the b o d y, especially the face or eyes, while transmitting. T h e transceiver will perform best if the microphone is 5 to 10 cm (2 to 4 in) away from the lips and the transceiver is vertical. RWARNING! NEVER operate the transceiver with a headset or other audio accessories at high volume levels. Hearing experts advise against continuous high volume op- eration. If you experience a ringing in your ears, reduce the volume or discontinue use. NEVER connect the transceiver to an AC outlet or to a power source of more than 16 V DC. Such a connection will damage the transceiver. NEVER connect the transceiver to a power source that is DC fused at more than 5 A. Accidental reverse connection will be protected by this fuse, higher fuse values will not give any protection against such accidents and the transceiver will be ruined. NEVER attempt to charge alkaline or dry cell batteries. Be- ware that external DC power connections will charge batteries inside the battery case. This will damage not only the battery case but also the transceiver. IC-T81A/E Manual 98.12.16 4:39 PM Page ii (1,1) iii DO NOT push the PTTwhen not actually desiring to trans- mit. Place unit in a secure place to avoid inadvertent use by chil- dren. DO NOT operate the transceiver near unshielded electri- cal blasting caps or in an explosive atmosphere. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). The use of non-Icom battery packs/chargers may impair transceiver performance and invalidate the warranty. Even when the transceiver power is OFF, a slight current still flows in the circuits. Remove the battery pack or case from the transceiver when not using it for a long time. Otherwise, the battery pack or installed Ni-Cd batteries will become ex- hausted. For USAonly: Caution: Changes or modifications to this transceiver, not ex- pressly approved by Icom Inc., could void your authority to operate this transceiver under FCC regulations. SUPPLIED ACCESSORIES Accessories included with the transceiver: ÀBattery pack (BP-199 or BP-200). . . . . . . . . . . . . . . . . 1 ÁAntenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ÂHandstrap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ÃBelt clip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 *Some versions are supplied with a wall charger. IC-T81A/E Manual 98.12.16 4:39 PM Page iii (1,1) iv IMPORTANT...................................................................................................ii EXPLICITDEFINITIONS................................................................................ii CAUTIONS.....................................................................................................ii SUPPLIED ACCESSORIES...........................................................................iii TABLE OF CONTENTS.................................................................................iv 1ACCESSORYATTACHMENT...................................................................1 2PANELDESCRIPTION.........................................................................2–5 nSwitches, controls, keys and connectors...............................................2 nFunction display.....................................................................................4 3BATTERYPACKS AND CHARGING...................................................6–8 nBattery pack charging............................................................................6 nCharging precautions.............................................................................6 nAbout battery packs...............................................................................6 nCharging connections............................................................................7 nBattery case...........................................................................................8 4BASIC OPERATION...........................................................................9–14 nPower ON..............................................................................................9 nSetting a frequency................................................................................9 nSetting tuning steps.............................................................................10 nSelecting a memory channel................................................................11 nLock function........................................................................................11 nReceive and transmit...........................................................................11 nFM broadcast reception.......................................................................12 nAir band reception................................................................................12 nNarrow FM operation...........................................................................12 nRIT/VXOa function..…

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lcom America, Inc. February 4, 1999 Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Gentlemen: -7619 This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The Applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 12 USC 862, and no party to the application is , subject to a denial of federal benefits pursuant to that section. - Sincerely, ICOM America, Inc. Masaaki Takahashi Manager, New Product Development MT: smg First in Communications CANADA SALES/SERVICE OFFICE 3071 - #5 Road, Unit 9, Richmond, B.C., Canada V6X 2T4 (604) 273-7400 FAX (604) 273-1900

I lcom America, Inc. Corporate Headquarters 2380 116th Ave. N.E. Bellevue, Washington 98004 Phone: (425) 454-8155 Fax: (425) 454-l 509 Customer Service: (425) 454-7619 February 4, 1999 Federal Communications Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 , Attention: Authorization & Evaluation Division Applicant: ICOM INCORPORATED Equipment: FCC ID: AFJIC-T81A FCC Rules: Part 15.37 (B) (New) Gentlemen: The applicant hereby requests the commission’s authorization to place the label requested by Rule 2.925 under the battery cover of the AFJIC-T81A. The label shall be permanently affixed to the equipment and shall be readily visible to the purchaser at tie of purchase. Label content and location are as shown in the accompanying application. The lcom model IC-T81A is too small physically to support to the FCC ID# on the back of the radio, The only area available other than the battery pack is the area underneath the belt-clip where it would not be visible to the purchaser. As a result, we would like to place the FCC identification number underneath the battery pack when the radio is in operation The FCC ID number would be clearly visible to the user when the radio is purchased as the radio and battery pack will be separated and must be removed individually from the carton. Sincerely, Masaaki Takahashi Manager, New Product Development MT: smg First in Communications

lcom America, Inc, Corporate Headquarters 2380 116th Ave. N.E. Bellevue, Washington 98004 Phone: (425) 454-8155 Fax: (425) 454-l 509 Customer Service: (425) 454-7619 Application for Equipment Certification FCC Identifier AFJIC-T81A February 4, 1999 Scanning Receiver Statement for Compliance with s 2.1033 (b) (12) The equipment under application herein incorporates a scanning receiver. Accordingly,15.121 of the Commission’s rules applies. The equipment under application herein is incapable of operating (tuning), or being readily altered by the user to operate within the frequency bands allocated to the Domestic Public cellular Radio Telecommunications Service (“Cellular Radio Service”). The equipment is also incapable of converting digital cellular transmissions to analog voice audio. The receiver portion of the equipment under application herein scans five bands 50-54MHz, 76-108MHz, 118-174MHz, 400-470MHz, and 1240-1300MHz, and the receiver does not scan the bands used by the Cellular Radio Service, 824-849 and 869-894MHz. The receiver portion of the equipment under application cannot be altered to enable it to scan the Cellular Radio Service bands by means of clipping the leads of or installing a diode, resistor and/or jumper wire, or other such simple component. Nor can the receiver be made to scan the Cellular Radio Service bans by replacing a plug-in semiconductor chip, since no such plug-in chips are utilized. The semiconductor chips that are utilized in the equipment cannot be erased and reprogrammed. The equipment has no circuitry capable of connecting any digital signals into analog voice audio. Sincerely yours, Masaaki Takahashi Manager, New Product Development First in Communications C,>‘i’,kDA SA, ---3SERVICE OFF;, E 3071 - #5 Road, Unit 9, Richmond, B.C., Canada V6X 2T4 (604) 273-7400 FAX (604) 273-1900

CPU LCD EEPROM INITIAL MATRIX KEY MIC RESET MUTE AF REG AMP SW LED DRIVER LED DRIVER +3CPU REG +3C REG 5.039MHz X1:CR-639 UN9115 DS3: LT1EPS3A IC1 M38267M8LGP BA4510FBA4510F IC201: TA7368F Q201:2SB1201 Q202:XP1501 S-81332HG-KC MC1: S2: JPM1990-2013R REG COMMON RX TX TX SENS SP1: CS028014-12 2SB1462 TP70N00E2015F-1903 LIGHT NOISE SENS IC2: Q3: Q1: Q361:2SJ364 IC142: S-80928ALMP-DAR IC141: Q142:XP1501 Q145:2SB1132 IC301:IC301: Q303: EM-140 (CHASSIS) BANDSW BAMDSW BANDSW 50MHz 144MHz 430MHz Q306:2SJ364 Q305:2SJ364 Q304:2SJ364 FILTER NJM2902VIC241: CTCIN AFVOL IC202:M5222FP IC203:TA75S01F MOD Q308:XP5601 D3:MA2S111 DC-DC DC-DC FX-2135 -5B2 LOGIC BLOCK AF Q302: DEV SW Q307:UN9214 Q143:UN9213 CLONE SW CLONEIN CLONEOUT Q141:UN9210 D141:MA2S111 HV SENS HV CPUHV D151:MA8100 D152:MA2S111 Q151:2SD2216 THERM SW IC4:TC4W53FU THERMC THERM(TX) THERM(RX) REG R3C R3 BANDSW 1200MHz DATA,CK,DAST FSET TUNE PSET 2nd IF IC MODE SW MODE SW VOL IF 2nd LO DS1: Q751:XP1501 Q752:2SD2216 Q754:2SD2216 D701:1SS364D702:1SS364 FI701:PBFC450R15DR IC701:TA31136FN IC5:M62368GP Q309:2SJ364 Q7:XP1501 Q8:2SB1132 X24320-2.5 XP4315 CL-200YG-C-TS 450KHz TO RF BUS UN9214 IC3:XC6371A500PR R+3 SPREMOTE DS4:LM-1728B D2:MA729 ABCDEFGHIJ CDEFABGHIJ ..1998 ICOMIcom Inc REVISIONS DIAGRAM 1 2 3 4 5 6.. .. .. .. .. ..7 8 9 10 11 12.. .. .. .. .. ..MODEL DWN.NO. DATEAPPD.CHKD. DWN.BY: 1 2 3 4 5 6 1 2 3 4 5 6 PLL,I/O DATA PTT +3C CTCOUT BEEP PLL,I/O DATA VCCVCC AF MUTE AMP AF LPF MIC D/A BPF DET AM 6 5 4 3 2 1 B C DE FG HI JA A B CD EF GH IJ 1 2 3 6 5 4 REVISSIONS 1 2 3 4 5 6 7 8 9 12 10 11 APPD.CHKD.DWN.BY:DATE..MODEL DWN.NO. .. . . . . . . . . . . .. . . . . . . . . . . ICOMIcom Inc. FX-2135 -5B1 MODE SW MODE SW TUNE CTRL X5 T4 REG I/O I/O DC SW CHGCHG CTRL LEVEL CONV APCAPC SENS VGGC PSET TUNE +3C+3TXCT4 CHGC HV VCC TO BATT DATA DATA,CK,IOSTRB IF(TO LOGIC) RF,VCO BLOCK DIAGRAM TCXOMODE SW 2ndLO LOCKV PLST1,2 PDA1,2,CK, D51:MA2S077 D52:MA2S077 D402:MA2S077 D403:MA2S077 D302:MA2S077 D303:MA2S077 Q922:2SK3075 Q921:MRF9745 Q138:MXR9745Q132:2SC5454 Q131:2SC5195 D804:MA2S077 D805:MA2S077 D806:MA2S077 D807:MA2S077 D802:MA2S077 D803:MA2S077 Q136:2SC3356Q135:2SC5107 Q134:2SC3356 Q133:2SC4403 Q824:2SC5195 Q823:2SC5107 Q822:2SC5107 Q821:2SC4403 Q807:2SC5107 Q341:2SC4215 Q342:2SC4215 Q343:2SC4226Q813:2SC5107 IC801:UPD3140GS Q804:2SK880 Q805:2SC4117 Q811:2SK880 Q812:2SC4117 D721:1SS364 X1:CR-638 Q721:2SC4215 Q829:UN921E Q828:UN911D Q827:UN921E Q826:UN911D Q825:UN921E Q816:2SC4228 Q912:UN9215 Q913:XP6401 Q51:2SC5319 IC51:UPC2748T LFL30-13C1270B060 LFL30-13C1270B060 Q401:2SC5195EFCH435MWNP1 D306:MA2SV05 Q301:3SK291 D309:MA2SV05 D310:MA2SV05 D202:MA2S304 Q201:3SK292 D203:MA2S304 Q101:2SC5195 D106:HVU350 D107:HVU350 IC601:UPC2757T D601:1SS364FI601:FL-299D602:1SS364 FI602:SFECV13.35MA Q701:2SC4215 Q901:UN9211 Q902:2SD2216 Q903:2SB1132 D901:MA133 IC5:S-81332HG-KC Q1:2SD2216 Q2:XP1501 Q3:2SB1132 IC2:BU4094BCFV IC3:BU4094BCFV Q9:XP4601 Q5:UN9210 Q4:2SB1132 D5:MA133 D6:SB07-03C D4:MA2S728 Q6:HAT1024R Q311:2SC5195 Q312:2SC5195 Q301:2SC5195 Q302:2SC5195 D301:1SV282 D311:MA2SV05 D302:MA2S077 Q321:2SC5195 Q322:2SC5195 D322:HVU350 D321:MA2S077Q323:2SC5195 Q313:2SC5195 D312:1SS364 Q350:2SC5006 D351:1SV270 D352:MA2S077 Q351:2SC5195 Q353:2SC5195Q354:2SC5195 13.8MHz 69.45MHz 13.35MHz TO LOGIC TX:50-54MHz VCO BOARD SHIFT SW MOD SHIFTC Q803:2SK880 50<-> 53.995 50<-> 53.995 144<-> 148 118<-> 173.995 400<-> 469.995 430<-> 450 RX FREQUENCY 1240<->1300 1240<->1300 76<-> 107.995 RX-Lo FREQUENCY 119.45<-> 123.445 89.35<-> 121.345 187.45<-> 243.445 330.55<-> 400.545 1170.55<->1230.55 TX/RX FREQUENCY RX FREQUENCY:WFM BAND RX FREQUENCY: 144MHz BAND RX FREQUENCY: 430MHz BAND RX FREQUENCY: 1200MHz BAND COMMON RX TX BUS 50MHz BAND 144MHz BAND WFM BAND 430MHz BAND 1200MHz BAND 1200MHz BAND 430MHz BAND 144NHz BAND WFM BAND 50MHz BAND 50MHz BAND 144MHz BAND 430MHz BAND 1200MHz BAND 50MHz BAND TX FREQUENCY: TX FREQUENCY: 144MHz BAND TX FREQUENCY: 430MHz BAND TX FREQUENCY:1200MHz BAND TX-Lo FREQUENCY TX FREQUENCY/ TX-Lo FREQUENCY: TX-Lo FREQUENCY: TX-Lo FREQUENCY: TX-Lo FREQUENCY: 50MHz BAND 430MHzBAND 1200MHz BAND 50/144MHz BAND RX FREQUENCY:50MHz BAND RX-Lo FREQUENCY: 50MHz BAND WFM BAND 430MHz BAND 1200MHz BAND 144MHz BAND RX-Lo FREQUENCY: 50MHz/WFM/ 144MHz BAND RX-Lo FREQUENCY: 1200MHz BAND RX-Lo FREQUENCY: 430MHz BAND IC901:NJM3404AV D101:1SV308 D102:1SV308 IC501:UPC2748T IC802:TB31242FN FI51: FI52: FI401: Q819: UN9211 HPFLPF LPF LPF LPF HPF HPF ANT SW ANT SW ANT SW ANT SW HPF HPF HPF LPF LPF LPF AMP PWR AMP IVERD AMP YGR AMP YGR AMP YGR BUFFBUFF BUFF BUFF AMP LO AMP LO AMP LO AMP LO SW TX/RX SW TX/RX SW TX/RX AMP RF AMP RF AMP RF AMP RF AMP RF AMP RF BPF BPF BPF BPFBPF BPF BPF BPF XTAL BPF BUFF LPFHPF x2 BUFF BUFF BUFF BUFF PLL IC PLL IC LOOP FIL LOOP FIL LOOP FIL BUFF REG +3 AMP IF BUFF LPF x2 HPFLPF BUFF LEVEL CONV AMP RF ANT BPF CERAMIC

lcom America, Inc. Coiporate Headquarters 2380 116th Ave. N.E. Bellevue, Washington 98004 Phone: (425) 454-8155 Fax: (425) 454-l 509 Customer Service: (425) 454-7619 February 4,1999 Federal Communications Commission EQUIPMENT APPROVAL SERVICES PO Box 358315 Pittsburgh, PA 15251-3315 Attention: Authorization & Evaluation Division Applicant: ICOM INCORPORATED Equipment: FCC ID: AFJIC-T81A FCC Rules: Part 15.37 (B) (New) Gentlemen: On behalf of the Applicant, enclosed please find the Application Form, Test Data Report and all pertinent documentation, the whole for certification of the referenced equipment as shown. Filing fees were sent with Fee Processing Form. Should you need any further information, kindly contact the writer who is authorized to act for the Applicant. MT: sg Enclosures

4 - 1 SECTION 4CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 DUPLEXER CIRCUIT (RF UNIT) The transceiver has a duplexer (low-pass and high-pass fil- ters) on the frist stage from the antenna connector to sepa- rate the signals into below UHF and SHF signals. The high- pass filter (L51–L55, C41–C46 and C48–C50) is for SHF (1200 MHz) signal and the low-pass filter (C9, C10, C12–C14 and L7–L9) is for below UHF (50 MHz, 144 MHz, 440 MHz and WFM) signals. The filtered SHF signal is applied to the low-pass fileter (C51–C54, L56 and L57). The RF signals below UHF pass through the duplexer circuit and are separated into VHF (50 MHz, 144 MHz and WFM band) and UHF (440 MHz band) signals. The high-pass fil- ter (C4–C8, L5, L6) is for UHF (440 MHz band) signal and the low-pass filter (C15–C20, L10–L12) is for VHF (50 MHz, 144 MHz and WFM band) signals. The VHF signals are applied to the another duplexer circuit for separation into 50 MHz and above WFM band signals. The high-pass filter (C21–C24, C84 and L13–L15) is for 144 MHz and WFM band signals and the low-pass filter (C27–C33 and L16–L18) is for 50 MHz band signal. The separated signals are applied to each RF circuits. 4-1-2 ANTENNA SWITCHING CIRCUITS (RF UNIT) The antenna switching circuit functions as a low-pass filter while receiving. However, its impeadance becomes very high while transmitting by applying a current to D101 and D102 (50 MHz), D302 and D303 (144MHz and WFM), D402 and D403 (440 MHz), D51 and D52 (1200 MHz). Thus, transmit signals are blocked from entering the receiv- er circuits. The antenna switching circuit employs a 1/4λ type diode switching system. The passed signals are then applied to each RF amplifier circuit. 4-1-3 50 MHz BAND RF CIRCUIT (RF UNIT) The RF circuit amplifies signals within the range of frequen- cy coverage and filters out-of-band signals. The signals from the antenna switching circuit (D101 and D102) are amplified at the RF amplifier (Q101). The ampli- fied signals pass through the tunable bandpass filter (L108–L110, C115, C117, C120, D106, D107) to suppress out-of-band signals, and are then applied to the 1st mixer circuit (IC601, pin 1). 4-1-4 144 MHz AND WFM BANDS RF CIRCUITS (RF UNIT) The signal from the antenna switching circuit (D302, D303) are applied to the each band-pass fileters and RF amplifier. • RF signals 144 MHz band The 144 MHz band signals are applied to the RF amplifier (Q301) via the tunable bandpass filter (L303, L304, C306, D306). The amplified signals pass through the tunable band- pass filter (C318–C321, D309, D310, L305, L306), and are then applied to the 1st mixer circuit (IC601, pin 1). • RF CIRCUIT 1st mixer HPFLPF ANT SW RF BPF RF BPF ANT SHF band (1200 MHz) LPF ANT SW RF BPF RF UHF band (440 MHz) HPF HPF ANT SW BPF RF BPF VHF band (144 MHz) LPF BPF RF BPF WFM band (RX only) ANT SW RF BPF VHF band (50 MHz) LPF IC601 1st LO BPF XTAL BPF CERAMIC D601 Mode SW D602 Mode SW FM mode FI601 69.45 NHz WFM mode FI602 13.35 NHz LEVEL CONV. D51, D52Q51FI51IC51FI52 D402, D403Q401FI401IC501 D302, D303D306Q301D309, D310 D202Q201 D203 Q101 D106, D107 D101, D102 to IF amp. (Q701) Q9 "TUNE" signal from IC5, pin 11 (LOGIC unit) 4 - 2 • RF signals WFM band The WFM band signals are applied to the RF amplifier (Q201) via the tunable band-pass filter (D202). The ampli- fied signals pass through the tunable bandpass filter (D203), and are then applied to the 1st mixer circuit (IC601, pin 1). Varactor diodes (D106, D107, D202, D203, D306, D309, D310) are employed by the tunable bandpass filter to tune the center frequency of the bandpass filter. These diodes are controlled by the PLL lock voltage and obtain good image response rejection. 4-1-5 440 MHz BAND RF CIRCUIT (RF UNIT) The signals from the antenna switching circuit (D402 and D403) are amplified at the RF amplifier (Q401). The ampli- fied signals pass through the bandpass filter (FI401), and are then applied to the 1st mixer circuit (IC601, pin 1) after being amplified at another RF amplifier (IC501). 4-1-6 1200 MHz BAND RF CIRCUIT (RF UNIT) The signals from the antenna switching circuit (D51 and D52) are amplified at the RF amplifier (Q51). The amplified signals pass through the bandpass filter (FI51), and are then applied to the RF amplifier (IC51). The amplified signal is applied to the 1st mixer circuit (IC601, pin 1) via the band- pass filter (FI52). 4-1-7 1ST MIXER CIRCUIT (RF UNIT) The 1st mixer circuit converts the received RF signals into a fixed frequency of the 1st IF signal with a 1st LO output fre- quency. By changing the PLL frequency, only the desired frequency will pass through at the next stage of the 1st mixer. 1st mixer circuit produces the different 1st IF signal for WFM and other band signals. • 50, 144, 440 and 1200 MHz band The applied RF signals are mixed with 1st LO signals at the 1st mixer (IC601) to produce a 69.45 MHz 1st IF signal. The 1st IF signal is output from the 1st mixer (IC601, pin 6), and then passed through the crystal bandpass filter (FI601) to suppress unwanted harmonic components. The filtered 1st IF signal is applied to the IF amplifier (IC701). The amplified signal is applied to the 2nd mixer circuit (LOGIC unit; IC701, pin 16). • WFM band The RF signals are mixed with 1st LO signals at the 1st mixer (IC601) to produce a 13.35 MHz 1st IF signal. The 1st IF signal is output from the 1st mixer (IC601, pin 6), and then passed through the 1st IF filter (FI602) to suppress unwant- ed harmonic components. The filtered signal is applied to the 2nd mixer circuit (LOGIC unit; IC701, pin 16). The 1st LO signals are gererated at the VCO circuit which consists of Q301, Q302, D301, Q311, Q312, D302, D311 for 50 MHz, 144 MHz and WFM, Q321, Q322, D321, D322 for 440 MHz, Q350, D351, D352 for 1200 MHz on the VCO unit. • The 1st LO signal for 50, 144, 440, WFM band The 1st LO signals which are generated on the VCO unit are applied to the buffer-amplifier (Q313 and D312 for 50 MHz, 144 MHz and WFM, Q323 for 440 MHz). The…

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5 - 1 AD-92SMA Optional SMA–BNC adaptor 1/8" (3.5 mm) 3-conductor plug 68 kΩ - + to [SP] jack Audio generator AC millivoltmeter Power supply 13.5 V / 3 A to [MIC] jack FM Deviation meter Attenuator 40 dB or 50 dB RF power meter 10 W/50 Ω Frequency counter Standard signal generator CAUTION: to the antenna connector DO NOT transmit while an SSG is connected to the antenna connector. JIG 5-1 PREPARATION ‘‘ REQUIRED TEST EQUIPMENT ‘‘ ENTERING THE ADJUSTMENT MODE qConnect a 68 kΩterminator to the [SP] jack. wPush and hold the [SQL] key, and then turn power ON. Note: The frequency of wide range appears at the display using this operation. n CONNECTION EQUIPMENT DC power supply RF power meter (terminated type) Frequency counter FM deviation meter GRADE AND RANGE Output voltage: 13.5 V DC Current capacity: 3 A or more Measuring range: 1–10 W Frequency range: 28–1500 MHz Impedance: 50 Ω SWR: Less than 1.2 : 1 Frequency range: 0.1–1500 MHz Frequency accuracy : ±1 ppm or better Sensitivity: 100 mV or better Frequency range: 30–1500 MHz Measuring range: 0 to ±10 kHz EQUIPMENT DC voltmeter Audio generator Standard signal generator (SSG) Oscilloscope AC millivoltmeter Attenuator GRADE AND RANGE Input impedance: 50 kΩ/V DC or better Frequency range: 300–3000 Hz Measuring range: 1–500 mV Frequency range: 28–1300 MHz Output level: 0.1 μV–32 mV (–127 to –17 dBm) Frequency range: DC–20 MHz Measuring range: 0.01–20 V Measuring range: 10 mV–10 V Power attenuation: 40 or 50 dB SECTION 5ADJUSTMENT PROCEDURES 5 - 2 5-2 PLL ADJUSTMENT The following adjustment must be performed at “ADJUSTMENT MODE”. PLL LOCK VOLTAGE REFERENCE FREQUENCY DETECTER OUTPUT VOLTAGE ADJUSTMENT ADJUSTMENTADJUSTMENT CONDITION MEASUREMENT VALUE POINT UNITLOCATIONUNITADJUST 1 2 3 4 5 6 7 8 1 1 • Displayed frequency : 51.000 MHz • Receiving • Transmitting • Displayed frequency : 88.000 MHz • Receiving • Displayed frequency : 145.000 MHz • Receiving • Transmitting • Displayed frequency : 440.000 MHz • Receiving • Transmitting • Displayed frequency : 1270.000 MHz • Receiving • Transmitting • Displayed frequency : 1270.000 MHz • Transmitting • Displayed frequency : 445.000 MHz [USA-1] only 435.000 MHz [ohter] • Connect an SSG to the antenna connector and set as: Level: 1 mV *(–47dBm) Modulation: OFF • Receiving RF To p Pannel LOGIC Connect the DC voltmeter or an oscilloscope to VLV. Connect the DC voltmeter or an oscilloscope to 6MLV. Connect the DC voltmeter or an oscilloscope to VLV. Connect the DC voltmeter or an oscilloscope to ULV. Connect the DC voltmeter or an oscilloscope to 12LV. Loosely couple the frequency counter to the antenna con- nector. Connect a digital- voltmeter to the check point Q. 0.8 V – 1.8 V 1.8 V – 2.8 V 1.4 V – 2.4 V 1.5 V – 2.5 V 1.5 V – 2.5 V 2.0 V – 2.5 V 2.0 V – 2.5 V 1.9 V – 2.9 V 1270.0000 MHz 1.0 V To p panel LOGIC Verify Push and hold the [SQL] key, then turn the [DIAL] L702 *This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit. 5 - 3 PLL lock voltage check point (for 50 MHz RX, WFM and 144 MHz) 12LV VLV ULV PLL lock voltage check point (for 440 MHz) PLL lock voltage check point (for 1200 MHz) • RF UNIT BOTTOM VIEW 6MLV PLL lock voltage check point (for 50 MHz TX) • RF UNIT TOP VIEW L702 Detector Output voltage adjustment • LOGIC UNIT TOP VIEW Q Detector Output voltage check point 5 - 4 5-3 RECEIVER ADJUSTMENT The following adjustment must be performed at “ADJUSTMENT MODE”. 50 MHz SENSITIVITY WFM SENSITIVITY AM SENSITIVITY VHF SENSITIVITY ADJUSTMENT ADJUSTMENTADJUSTMENT CONDITION MEASUREMENT VALUE POINT UNITLOCATIONUNITADJUST 1 2 1 2 1 2 1 2 • Displayed frequency : 50.000 MHz • Connect an SSG to the antenna connector and a SINAD meter with an 8 Ωload to the [SP] jack. • Set an SSG as : Level: 1 μV *(–107 dBm) Deviation: ± 3.5 kHz Modulation: 1 kHz • Receiving • Displayed frequency : 54.000 MHz [EUR], [UK], [ITA] • Receiving • Displayed frequency : 76.000 MHz [SEA], [USA-1] 88.000 MHz [EUR], [UK], [ITA], [AUS] • Set an SSG as : Level: 3.2 μV * (–97 dBm) Deviation: ± 52.5 kHz Modulation: 1 kHz • Receiving • Displayed frequency : 107.000 MHz • Receiving • Displayed frequency : 108.000 MHz • Set an SSG as : Frequency: 108.000 MHz Level: 1.0 μV *(AM) (–107 dBm) Modulation: 1 kHz Mod. depth: 30 % • Receiving • Displayed frequency : 135.980 MHz • Set an SSG as : Frequency: 135.980 MHz • Receiving • Displayed frequency : 136.000 MHz • Set an SSG as : Level: 3.2 μV * (–97 dBm) Deviation: ± 3.5 kHz Modulation: 1 kHz • Receiving • Displayed frequency : 160.000 MHz • Receiving LOGIC LOGIC LOGIC LOGIC Connect a multime- ter to check point SD. Connect a multime- ter to check point SD. Connect a multime- ter to check point SD. Connect a multime- ter to check point SD. Maximum voltage Maximum voltage Maximum voltage Maximum voltage To p panel To p panel To p panel To p panel *This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit. [DIAL] [DIAL] [DIAL] [DIAL] 5 - 5 • LOGIC UNIT TOP VIEW 50 MHz, WFM BAND, AIR BAND and 145 MHz Sensitivity check point SD 5 - 6 RECEIVER ADJUSTMENT (Continued) The following adjustment must be performed on the normal mode after “SENSITIVITY ADJUSTMENT” in SECTION 5-3. *This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit. S-METER (50 MHz band) (WFM band) (144 MHz band) ADJUSTMENTADJUSTMENT CONDITION MEASUREMENT VALUE ADJUSTMENT UNITLOCATION 1 2 3 4 5 6 7 8 • Displayed frequency : 51.000 MHz [EUR], [UK], [ITA] 52.000 MHz [AUS], [SEA], [USA-1] • Connect the SSG to the antenna connector and set as: Level: 1 μV * (– 107 dBm) Modulation: 1 kHz Deviation: ± 3.5 kHz • Connect a terminator to the [SP] jack. • Receiving • Set an SSG output level for the S-meter to S3. • Receiving • Increase an SSG output level. • Receiving • Displayed frequency : 92.000 MHz [SEA], [USA-1] 98.000 MHz [EUR], [UK],[ITA], [AUS] • Connect the SSG to the antenna connector and set as: Level: 2 μV * (– 101 dBm) Modulati…

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REVISSIONS 1 2 3 4 5 6 7 8 9 12 10 11 APPD. CHKD.DWN.BY: DATE..MODEL DWN.NO. .. . . . . . . . . . . .. . . . . . . . . . . ICOM Icom Inc. ABCD EFGHIJKLMN 1 2 3 4 5 6 7 8 9 10 1 ABCDEFGHIJKLMN 2 3 4 5 6 7 8 10 9 BAND1BAND2 BAND3BAND4 RXF1 TXFH RXF2 TXFL REMOTE IFS Inh50 TXF50 PTT IOSTDASTTHERMCLOCKV VIN PLST2PLST1TXCR3C POWER CHGC DATA/FCC PDA1/ULPDA2/UL CK SQL CLONEINAFON TXInh50 FX-2135 A5-6 1 LOGIC SCHEMATIC DIAGRAM CLONEIN 2NDLO R+3 +3C PSET THERM IOST +3C DATA PDA2/ULCK AGC TUNE LOCKVVHVCO PLST1UVCO TXC BDET 12VCO WFM MODAM PLST2R+3 CHGC HV6MVCO DC-DC WFM +3C+3C+3C R+3 DATA CK DAST PSET R3C FSET TUNE AFOUTAFO INTSP SPREMOTE VCC +3C AFON AFON DC-DC VCC +3C KSD1 MOD KSD2 CLONEINVIN LOCKVTHERMC BDET PDA2/UL DAST IOST PLST2 PLST1TXCR3C CHGC DATACK CK HV SPREMOTE VCC VIN R+3 AGC AM EURDEV VHVCO UVCO6MVCO R+3 12VCO +3C VCC WFM R+3 VCC PSET MOD IFIN HV FSET EURDEV 2NDLO THERMC TXC DATA CKTXC AM CHGC WFM PDA1/UL PDA1/UL KSD0 POWER POWER KR3KR3 SEG36 SEG24 SEG47 COM4 KS4 KS4 SEG41SEG42 COM1 SEG22 SEG34 BLED KS2 COM2 SEG35 PTT SEG37SEG27 SEG41 SEG46 SBATT I1 I1 SEG42 SEG50 SEG51 COM2 CONT NOISE KS0 KR0 KR0 MICC SEG45 SEG23 SEG39 PCON KS1 KR3 SEG38 RM/MM SEG31SEG37 +3CPU CPUHV SEG23 SEG43 SEG48 NOISE BEEP KR2KR2 SEG29 CTCIN RM/MM SEG31 PCON ESIO SEG51 CTCOUT SEG30 KR1KR1 SEG36 SEG45 COM1 BPCPI SD SD SEG40SEG24SEG44SEG25SEG43 DIUK SEG28 PTT RM/MM TCON SEG49 COM4 KSD4 KSD3 KR3 KSD5 SEG38 SEG52 CLONEOUT CTCIN SEG47 +3CPU SEG33SEG21 SEG21 COM3 KS2 SD SEG29SEG22DICK ESIO COM3 CPUHV KR0 SEG26 SEG50 SEG33 TCON SEG35 SEG49 KR1 SEG52 DICK KS3 SEG32 LIGHT CTCOUT KR2 KS3 SEG27SEG48 CONT DIUD SEG28 BEEP DICK SEG30 SEG26 SEG40 SEG44 SEG32SEG34SEG46 CLONEOUT KS1 SEG39SEG25 DIUD RESET MICC KS0 I2 KS5 I2 KS5 GND GND GND GND GND GND GND R144 4.7K R145 10K R143 10K C145 0.001 R201 10 IC201 TA7368F 1 2 3 4 56 7 8 9 10 R202 150 R207 1M R208 10K R209 1K C201 0.047 C203 47P C205 47 + C249 0.01 C250 0.01 C245 0.1 R246 120K C246 0.1 C4 27P R15 10K C310 470P C312 470P C313 0.0047 C314 0.001 R301 56K R303 27K R304 56K R305 100 R306 100K R313 100K R314 100 R315 47K R320 33K D143 MA2S111 Q145 2SB1132 R361 4.7K R362 1M R206 4.7K C209 0.001 R141 15K R363 470K Q361 2SJ364 R316 470 C318 0.01 Q305 2SJ364 C320 0.001 C321 0.001 C322 0.001 R330 470K D141 MA2S111 R146 1M Q151 2SD2216 D58 MA6S121 S1008 3 S1018 * S1019 0 S1020 # IC202 M5222FP 1 2 3 45 6 7 8 Q141 UN9210 MC1 …

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