AFJIC-A110VHF-AM Aircraft Band Transceiver

iA110 VHF AIR BAND TRANSCEIVER INSTRUCTION MANUAL This device complies with Part 15 of theFCC Rules. Operation is subject to thecondition that this device does not causeharmful interference. i FOREWORDREAD ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL — This in- struction manual contains important operating instructions forthe IC-A110. EXPLICIT DEFINITIONSThe explicit definitions below apply to this instruction manual. CAUTIONSR WARNING! 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 thevolume level or discontinue use.NEVER connect the transceiver to an AC outlet or to a power source of more than 27 V DC. Such a connection willdamage the transceiver. NEVER connect the transceiver to a power source that is DC fused at more than 5 A. Accidental reverse connection willbe protected by this fuse, higher fuse values will not give anyprotection against such accidents and the transceiver will beruined. DO NOT push the PTT when not actually desiring to trans- mit. DO NOT operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –30°C (–22°F) or above WORD DEFINITION R WARNING Personal injury, fi re hazard or electric shock may occur. CAUTION Equipment damage may occur. NOTE If disregarded, inconvenience only. No riskof personal injury, fi re or electric shock. FCC caution: Changes or modifications to this transceiver, not expressly approved by Icom Inc., could void your authority tooperate this transceiver under FCC regulations. ii +60 ° C (+140 ° F). DO NOT place unit in a non-secure place to avoid inad- vertent use by children. DO NOT connect the transceiver to a power source using reverse polarity. This connection will not only blow fuses butalso may damage the transceiver. AVOID placing the transceiver in excessively dusty enviro- ments. AVOID placing the transceiver against walls. This will ob- struct heat disspation. AVOID the use of chemical agents such as benzine or al- cohol when cleaning, as they damage the transceiver sur-faces. BE CAREFUL! The transceiver will become hot when operating continuously for long periods. TABLE OF CONTENTSFOREWORD ........................................................................................... iEXPLICIT DEFINITIONS ......................................................................... iCAUTIONS .............................................................................................. iTABLE OF CONTENTS .......................................................................... ii1 PANEL DESCRIPTION ............................................................... 1 – 3  Panel description ............................................................................. 1 – 2  Function display .................................................................................... 3 2 BASIC OPERATION ................................................................... 4 – 5  Power ON ............................................................................................. 4  Channel selection .................................................................................. 4  Squelch function .................................................................................... 5  Side tone function .................................................................................. 5  LCD backlight control............................................................................. 5  Dial select function ................................................................................ 5 3 SCAN OPERATION ................................................................... 6 – 7  Scan operation ..................................................................................... 6  On-hook scan ....................................................................................... 7  Dualwatch ............................................................................................. 7 4 MEMORY PROGRAMMING ...................................................... 8 – 9  Programming a memory channel .......................................................... 8  Memory names...................................................................................... 9 5 OTHER FUNCTIONS ............................................................... 10-11  Initial set mode .............................................................................. 10-11 6 CONNECTION AND INSTALLATION .................................... 12 – 13  Rear panel and connections ............................................................... 12  Mounting ............................................................................................. 13  Supplied accessories........................................................................... 13 7 CLONING ...................................................................................... 14 8 SPECIFICATIONS ............................................................. 15-169 OPTIONS............................................................................ 17-18  OPC-871 HEADSET ADAPTER..................................................... 17-18  Panel description q TUNING [DIAL(TS)] ➥ Changes the operating frequency; memory channel inmemory mode; set mode contents in set mode, etc. ➥ Push to toggle the dimmer control ON or OFF. ➥ Push and hold for 1 sec. to select the Tuning Step [TS]; 1MHz or 10 kHz are available. (p. 5) w FUNCTION DISPLAY (p. 3) Displays the operating frequency, memory channel name, etc. e VOLUME UP [ Y ] DOWN [ Z ] KEY Adjusts the audio output level.r LOUD SPEAKER Front mounted loud speaker.t POWER SWITCH [POWER] Push and hold 500 m sec. to turn the p…

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iA110 VHF AIR BAND TRANSCEIVER INSTRUCTION MANUAL This device complies with Part 15 of theFCC Rules. Operation is subject to thecondition that this device does not causeharmful interference. i FOREWORDREAD ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL — This in- struction manual contains important operating instructions forthe IC-A110. EXPLICIT DEFINITIONSThe explicit definitions below apply to this instruction manual. CAUTIONSR WARNING! 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 thevolume level or discontinue use.NEVER connect the transceiver to an AC outlet or to a power source of more than 27 V DC. Such a connection willdamage the transceiver. NEVER connect the transceiver to a power source that is DC fused at more than 5 A. Accidental reverse connection willbe protected by this fuse, higher fuse values will not give anyprotection against such accidents and the transceiver will beruined. DO NOT push the PTT when not actually desiring to trans- mit. DO NOT operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –30°C (–22°F) or above WORD DEFINITION R WARNING Personal injury, fi re hazard or electric shock may occur. CAUTION Equipment damage may occur. NOTE If disregarded, inconvenience only. No riskof personal injury, fi re or electric shock. FCC caution: Changes or modifications to this transceiver, not expressly approved by Icom Inc., could void your authority tooperate this transceiver under FCC regulations. ii +60 ° C (+140 ° F). DO NOT place unit in a non-secure place to avoid inad- vertent use by children. DO NOT connect the transceiver to a power source using reverse polarity. This connection will not only blow fuses butalso may damage the transceiver. AVOID placing the transceiver in excessively dusty enviro- ments. AVOID placing the transceiver against walls. This will ob- struct heat disspation. AVOID the use of chemical agents such as benzine or al- cohol when cleaning, as they damage the transceiver sur-faces. BE CAREFUL! The transceiver will become hot when operating continuously for long periods. TABLE OF CONTENTSFOREWORD ........................................................................................... iEXPLICIT DEFINITIONS ......................................................................... iCAUTIONS .............................................................................................. iTABLE OF CONTENTS .......................................................................... ii1 PANEL DESCRIPTION ............................................................... 1 – 3  Panel description ............................................................................. 1 – 2  Function display .................................................................................... 3 2 BASIC OPERATION ................................................................... 4 – 5  Power ON ............................................................................................. 4  Channel selection .................................................................................. 4  Squelch function .................................................................................... 5  Side tone function .................................................................................. 5  LCD backlight control............................................................................. 5  Dial select function ................................................................................ 5 3 SCAN OPERATION ................................................................... 6 – 7  Scan operation ..................................................................................... 6  On-hook scan ....................................................................................... 7  Dualwatch ............................................................................................. 7 4 MEMORY PROGRAMMING ...................................................... 8 – 9  Programming a memory channel .......................................................... 8  Memory names...................................................................................... 9 5 OTHER FUNCTIONS ............................................................... 10-11  Initial set mode .............................................................................. 10-11 6 CONNECTION AND INSTALLATION .................................... 12 – 13  Rear panel and connections ............................................................... 12  Mounting ............................................................................................. 13  Supplied accessories........................................................................... 13 7 CLONING ...................................................................................... 14 8 SPECIFICATIONS ............................................................. 15-169 OPTIONS............................................................................ 17-18  OPC-871 HEADSET ADAPTER..................................................... 17-18  Panel description q TUNING [DIAL(TS)] ➥ Changes the operating frequency; memory channel inmemory mode; set mode contents in set mode, etc. ➥ Push to toggle the dimmer control ON or OFF. ➥ Push and hold for 1 sec. to select the Tuning Step [TS]; 1MHz or 10 kHz are available. (p. 5) w FUNCTION DISPLAY (p. 3) Displays the operating frequency, memory channel name, etc. e VOLUME UP [ Y ] DOWN [ Z ] KEY Adjusts the audio output level.r LOUD SPEAKER Front mounted loud speaker.t POWER SWITCH [POWER] Push and hold 500 m sec. to turn the p…

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IF AGC RF AGC TUNE RSSI TRC SQLI DC POWER SUPPLY PSWC 5B1 CPU ABCD EFGIJKLMN ABCDEFGHIJKLMN H 1 2 3 4 5 6 7 8 9 10 1 ICOM Icom Inc REVIS IONS DIAGRAM 1 2 3 4 5 6.. .. .. .. .. ..7 8 9 10 11 12 .. .. .. .. .. .. MODEL DWN.No. DATEAPPD. CHKD. DWN.BY: AX-2270 BLOCK RMUTE R/T TMUTE LEDC1 LEDC2DS1 HLC7453-012400 FRONT UNIT +8V TRC RX RX/TX TX DATA BUS NOTES FISW EXTMIC EPTT +5V PTTS LCD SP HANG MIC PTT +8V CLONE I/O AF OUT TMUT VCO DC-DC CONVERTOR TX:118.0~136.975MHz RX:79.15~98.125MHz 2nd IF=450KHz 13.8V or 24.0V CPU5V BEE P 8V VCC TX & RX=118.0~136.975MHz +5V MOD AF MOD V 8V +5V 1st MIX AF MUTE 1st IF=38.85MHz 12.8MHz 2nd Lo:38.4MHz 1st Lo :79.15MHz~98.125MHz T8 +5V 2 3 4 5 6 7 8 9 10 1999.11.09 D5: MA111 D15: MA111 D62: SB07-03C IC1 TX:118.0~136.975MHz D66: SB07-03C PSWC SMUTE D14: MA8036L HD6433823A19D D51~D52 1SV271 X2 D43: 1SS352 Q2 3SK184 Q51 MRF137 AMP PWR Q42 2SC4403 AMP PRE IC11:NJM2107F SQL CONT R110 MIC LEVEL ADJ J7 EXT SP LPF D38 1SV271 RX ATT D6,D37 HVU350 X2 RF BPF D7,D8 HVU350 X2 RF BPF D28 1SV307 FIL SW D29 1SV307 FIL SW D30 1SV307 FIL SW D31 1SV307 FIL SW Q7 2SC4211 AM DET Q16 2SC4116 RIPPLE FIL LOOP FIL R59 TUNE ADJ R121 MOD ADJ Q58 XP1113 VCO R/T SW Q4 XP4315 R/T CONT IC2 S-80942ANNP RESET IC3 TC7W04FU I/O BUFF Q2: 2SA1622 Q3: 2SC4211 I/O BUFF IC29 BA08FP +8V REG Q22: 2SC4211 Q23: 2SB1132 +5V CURRENT AMP Q33 XP4315 R/T CONT FI4 CFG450H CERAMIC BPF IC4 25LC160T-1/SN EEPROM J6 ACC 1 2 3 4 5 6 7 SP D27: MA111 Q52: 2SA1622 PTT CONT IC17 TC4W53FU W/N SW IC18 TC4W53FU W/N SW IC19 NJM2902V LPF IC22 TC4W53FU MOD/AF SW D10,D11 MA77 X2 R/T SW IC5 BU4094BC EXPAND IC7 S-81350HG +5V REG Q71: DTC144EE Q70: DTB123EK T8 SW IC26 TA78L05F +5 REG D56 DE5SC6M DC-DC DET D35: MA8330 Q82: 2SC4081 +8V REG D26 DE5SC6M DC-DC DET LINE FILTER LINE FILTER Q92,Q93 2SK2414 X2 AF POWER AMP Q87,Q88 2SK2414 X2 POWER AMP Q90 2SA1471 POWER SW IC45 NJM072BM REF,V CONTROL LPF D1~D3 UM9401F X3 ANT SW IC28 TC4S66F AF MUTE IC4:BA3308F AMP ALC Q91 2SK2414 DC-DC CONVERT AMP IC15 MC33063AD DC-DC CONVERT CONTROL IC46 MC33063AD DC-DC CONVERT CONTROL Q72: XP4315 Q53: DTB123EK R8 SW Q59:2SC4226 RX VCO D65:HVU350 Q89 XP1501AB POWER SW CTRL D44: MA8051 IC40: TA31136FN 2nd IF IC FI3 CFWM450D CERAMIC BPF T1 ST-82P IMPE- CONVERT DANCE IC31 TA75S01F LPF IC13 TC9260F E-VOL Q77 2SD1819A AMP AGC Q78 2SD1819A AMP AGC FI1 FL-306 XTAL BPF Q74: 2SB798 Q75: 2SC4081 S MUTE Q86: XP4315 Q98 2SA1586 PWR CNT D4,D5 RB706F X2 PWR DET IC50 TA75S01F APC CNT D57: SB07-03C IC47: HIP4081A FET DRIVER D55: SB07-03C IC43: HIP4081A FET DRIVER X1 CR-658 TCXO (12.8MHz) Q99 2SC4116 T MUTE AMP Q79 2SK880 TUNE BUFF Q83,Q84 2SC4215 X2 TRIPLER AMP X1 PBRC3.68AR (3.68MHz) Q96: DTC144EU Q97: DTC144EU SP OUT CONT IC48 TC4W53FU MOD/AF SW Q94 FW215 SP OUT SW IC30 TC4S66F S MUTE SW IC16 TC4W53FU IN/EXT MIC SW FI2 FL-307 XTAL BPF D53.D54: MA2S11 Q73: 2SC4081 BUFF Q69 DTB123EK BUFF Q68 XP4315 BUFF Q1 3SK184 AMP RF S1 DIAL VCC +5V R8 T8 IC37 TDA7233D AMP AF IC42 TA75S01F AMP AF D50: 1SV271 Q3: 2SC4215 AMP IF Q4~Q5 2SC4215 X2 AMP IF Q20 2SK3074 PRE DRIVE Q11 2SC4081 AMP APC Q15 2SC4228 BUFF Q14 2SC4403 BUFF Q12 2SC4403 BUFF Q43 2SC4226 BUFF Q1: DTA143ZU Q7: DTC114EU BUFF Q5: DTA143ZU Q6: DTC114EU BUFF IC2 TB31207AFN PLL IC Q21 2SK3075 PRE DRIVE R336 EXT MIC LEVEL ADJ J2 MIC CONNECTOR 1 2 3 4 5 6 7 8 DS2~DS7 CL-170Y-CD X6 LCD BACK LIGHT D6 DA204U PROTECT Q6 2SC4215 AMP IF Q44:2SC4226 TX VCO D64: HVU350 IC47A HIP4081A FET DRIVER R150 POWER ADJ IC51 TA75S01F HPF W1 + - 1 2 Q101: DTC144EU Q100: FW215 SP MUTE IC41 TA8208H AMP PWR S2 VUP S3 VDN S4 V/M S5 SCAN S6 PRI S7 SQL S8 POWER TS IC5 TA75S01F AMP AF IC44 uPC311 AMP AF Q102 2SC4081 POWER SW CTRL D36 DSA3A1 PROTECT IC6:TC4S66F Q80:DTA144EU R MUTE Q81:DTC144EU

Size=33mm×11mm

Circuit Description. 1. The MAIN Unit: Reception The input signal from the antenna connector passes through the low-pass filter (L2,L3, L48, C1~C6, C330~C331), and is applied to the antenna switching circuit. The antenna switching circuit uses a /4 type diode switch that does not consume any electric current when receiving. When receiving, all of the diodes (D1~D3) are turned off and operate as a low-pass filter. The input signal passes through this low-pass filter (L4, L5, C7~C9, C362), and is applied to the RF amplifier circuit. The input signal passes through the AGC interlocking RF attenuators (D38, Q73, L52, R295 which attenuate when there is excessive input), then pass through the band-pass filters (L8, L27, C10, C21, C164, C165) and tunable varactor bandpass filters (D6, D37, L9, L49, C23, C342, C405, C406), which suppress unwanted out-of-band signals. Then, the signal is applied to the RF amplifier (Q1). The amplified signal passes through the tunable varactor bandpass filters (D7, D8, L10, L11, C28, C31, C407,C533), and is input into the first gate of the 1st-mixer circuit (Q2). The 1 st Lo has been input into the second gate of (Q2), and mixes the received signal frequencies to a 38.85 MHz 1 st IF signal. The 1 st IF suppresses unwanted out-of-band signals in either Wide Mode (FI1) or Narrow Mode (FI2), then is amplified in the IF amp (Q3) and applied to the IF IC (IC 40) pin 16. The IF IC contains the 2 nd mixer. The applied signal from pin 16 is mixed with a tripled frequency from the PLL IC reference oscillator (X1 12.8 MHz) at (Q83, Q84), that is used for the 2 nd Lo signal (38.4 MHz), for a conversion to a 450 kHz 2 nd IF signal that is output from pin 3. That output signal passes through ceramic filters (Wide Mode=FI3, Narrow Mode=FI4) that suppress unwanted out-of-band signals, which after being amplified in the 2 nd IF AMP (Q4~Q6), are applied to the AM detector section at (Q7). Depending on the current flowing in (Q7), the (Q77) IF AGC AMP and the (Q78) RF AGC AMP are activated, and the gain is controlled. The (Q4) output is also applied to the IF IC pin 5. The IF IC RSSI and (Q78) AGC AMP output is synthesized by the OP amplifier (IC11), and turned into a squelch signal. The AF output detected in (Q7) passes through the low-pass filter (IC31), then through the (IC22) MOD/AF switch and, after being amplified in the AF AMP (IC42), passes through the RMUTE (IC6) where the AF level is adjusted by the electronic volume (IC13). It then passes through the mute SW (IC30), and is branched into speaker and ACC. The speaker passes through the AF mute SW (IC28) and AF/MOD SW (IC48), then is applied to the buffer amplifier and the FET driver (IC47) pin 5, which drives the power MOS FET (Q92, Q93) and then is power amplified in the AF amplifier. That output passes through the SP SW (Q94) and is output from the SP jack (J7), but if no SP is connected to (J7), the (J7) plug-in switch switches to the internal SP, conducts level adjustment (R209,R445,R446) and is power amplified in the AF amplifier to drive the internal SP. The other ACC is power amplified in the AF AMP (IC37) to drive the ACC speaker (headset etc.). The bandpass filter conducts tracking with the varactor. The tuning voltage added to the varactor power amplifies (Q79) the PLL lock voltage at the high impedance input FET, so that it does not affect the PLL circuit. With these circuits, it is possible to obtain a good image ratio across wide bandwidths. Transmission The Lo produced in the VCO is amplified in the buffer amplifier (Q14, Q15), then passes through the Lo SW (D10, D11) and is power amplified to the necessary level in the PA in the YGR (Q42). The amplified signal is power amplified in the PRE DRIVE (Q20, Q21) and POWER AMP (Q51), then passes through the APC detector circuit (D4, D5, L6, C12~C17) and ANT SW (D3), then the higher harmonics are attenuated in the LPF and applied to the ANT. The APC compares the detector circuit's voltage and the APC set voltage (R150) in the differential amplifier (IC50), then with the (Q11, Q98) APC driver, controls the PRE DRIVE (Q20, Q21) amplification so that the APC set voltage and detector voltage are the same, which stabilizes the power output. PLL The PLL loop consists of the VCO and (IC2). The VCO output is applied to the buffer amplifier at (Q14, Q15), and becomes the Lo. The other output is amplified in the (Q12) AMP, and applied to the PLL IC. In the PLL IC, the reference oscillator (X1) oscillates at 12.8 MHz. This is divided into frequencies of 25kHz from the CPU data (front unit IC1), and this is phased with the same data from the CPU in the VCO of 25kHz divided frequencies. The lock voltage outputs only the difference of these from the charger pump. The lock voltage from (IC2) becomes DC in the (R61, R62, C59, C60) loop filter, and is output in the VCO LV line. VCO The VCO contains separate transmitting and receiving circuits. The transmitting circuit consists of the (Q44) oscillating circuit and the varactor diode (D64). The oscillating frequency is changed by the DC bias in the oscillating circuit's cathode (D64). The receiving circuit consists of the (Q59) oscillating circuit and the varactor diodes (D65). The oscillating frequency is changed by the DC bias in the oscillating circuit's cathode (D65). The transmission output is applied to the buffer circuit (Q43), and becomes the VCO output. Transmission/reception VCO is operated by switching. That switching is conducted by matching the VCO power operation in (Q58). Modulation Circuit The microphone signal passes through the IN/EXIT SW (IC16), and after the mic sensitivity (R110) has been set, the gain is controlled in the ALC AMP (IC4), and then it passes through the MOD/AF (IC22) and splatter filter (IC19). After it passes through MOD/AF SW (IC48) and the modulation has been set in (R121), it is power amplified in the AF AMP (IC44) FET driver (IC47) and power MOS FET (Q92, Q93), and then is modulated in the tra…

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IC-A110 Adjustment procedures IC-A110 Ad justment proceduresIC-A110 Adjustment procedures IC-A110 Adjustment procedures Adjustment AdjustmentAdjustment AdjustmentNo NoNo No Adjustment Condition & tuning Adjustment Condition & tuningAdjustment Condition & tuning Adjustment Condition & tuningValue ValueValue ValueREF No REF NoREF No REF No CK. CK.CK. CK. POINT POINTPOINT POINT [Adjustment condition]Power supply voltage 13.75V Vdd Voltage Adjustment1 Q51 Drain is adjusted to 13.5±0.2V with R392 (MAIN) under the receiving condition. 13.5± 0.2V MAIN R392 Q51 Drain Lock Voltage Adjustment1 Indication frequency is made 118.000MHz, and a digital tester is put on CP2 (LV). CP2 (LV) 2 It is adjusted to the business that a lock voltage becomes 0.5±0.05V with L41 (VCO) at the time of the reception. 0.5± 0.05V L41 (VCO) 3 It is adjusted so that a lock voltage may become 0.5±0.05V with L40 (VCO) at the time of the transmission. 0.5± 0.05V L40 (VCO) Tune Voltage Adjustment1 The degital multi meter is put on CP1 (TUNE), and adjusted so that tune voltage may become 0.7±0.05V with R59 (MAIN). 0.7± 0.05V R59 (MAIN) CP1 (TUNE) Frequency Adjustment1 The power meter, an irregular occasion meter, a frequency counter are connected at the end of the antenna. 2 Indication frequency is made 136.975MHz, and a message is transmitted. 3 It is adjusted so that frequency may be 136.975MHz± 400Hz with X1 (MAIN) with seeing a frequency counter. 136.975M Hz± 400Hz X1 (MAIN) Antenna terminal RF Power Adjustment1 made 127.525MHz. 2 A message is transmitted with 127.525MHz without irregularity. 3 It is adjusted so that transmitting output may become 9±0.5W with R150 (MAIN) with seeing the power meter.9±0.5W R150 (MAIN) Antenna terminal RF Power balance Adjustment1 A message is transmitted over and under the band, and it confirms that transmitting output is within the range of 7 - 10W. Re-adjustment is done if it is not within the range.7～10W Antenna terminal Deviation Adjustment[Adjustment condition] Adjustment frequency : Moduration Analyzer MOD : P- HPF/LPF : DE-EMP : OFF 1 R110, R121 (MAIN) are fitted to the center. 2 1kHz inputs the proper string wave of Vrms 10m from the microphone terminal, and it is made transmitting condition. It is R121 (MAIN), and it is adjusted so that a degree of irregularity may be 90%.90% R121 (MAIN) Antenna terminal 3 20dB going down (1m Vrms) makes it do the level of the microphone terminal, and it is R110 (MAIN), and it is adjusted so that a degree of irregularity may be 30%.30% R110 (MAIN) Antenna terminal Head set adjustment 1kHz inputs the signal of Vrms 25m with AG from EXTMIC (J6 : MAIN), and it is set so that irregularity may be 30% with 36 (MAIN) in the center frequency.30% R336 (MAIN) Antenna terminal RF BPF adjustment[Adjustment condition] SG level 0dBu (1kHz 30% MOD) *) A level is made to change if necessary. 1 The outside SP, multimeter are connected with SG, the SP terminal in the antenna terminal, and the core position of L9, L49, L10, L11 is preset with in the bottom. 2 Frequency is moved around 118MHz, and L9, L49, L10, L11 (MAIN) are adjusted so that AF output may become the biggest.AF MAX. L9,L49, L10,L11 (MAIN) EXT.SP 3 Frequency is made 136.975MHz, and R59 (MAIN) is adjusted so that AF output may become the biggest.AF MAX. R59 (MAIN) EXT.SP Squelch adjustment1 The neighborhood of 118MHz is inputted to either memory. 2 The power is turned on, and made the adjustment mode with pushing SQL, TS, SCAN key. 3 It is fitted to the memory ch which wrote frequency for the SQL adjustment that it was written first. 4 It confirms that indication is "sqADJ02", and a signal without the irregularity of -15dBu is inputted in the same frequency than SG.-15dBuDS1 5 SCAN key is pushed, and close level is set.SCAN 6 It confirms that indication is "sqADJ25", and the signal of the 15dBu irregular-less is inputted from SG.15dBuDS1 7 SCAN key is pushed, and a open level is set.SCAN 8 A power supply is turned off, and it gets out of the adjustment mode. *) 4 - 5 are repeated unless a power supply is turned off.

IC-A110 Adjustment procedures IC-A110 Ad justment proceduresIC-A110 Adjustment procedures IC-A110 Adjustment procedures Adjustment AdjustmentAdjustment AdjustmentNo NoNo No Adjustment Condition & tuning Adjustment Condition & tuningAdjustment Condition & tuning Adjustment Condition & tuningValue ValueValue ValueREF No REF NoREF No REF No CK. CK.CK. CK. POINT POINTPOINT POINT [Adjustment condition]Power supply voltage 13.75V Vdd Voltage Adjustment1 Q51 Drain is adjusted to 13.5±0.2V with R392 (MAIN) under the receiving condition. 13.5± 0.2V MAIN R392 Q51 Drain Lock Voltage Adjustment1 Indication frequency is made 118.000MHz, and a digital tester is put on CP2 (LV). CP2 (LV) 2 It is adjusted to the business that a lock voltage becomes 0.5±0.05V with L41 (VCO) at the time of the reception. 0.5± 0.05V L41 (VCO) 3 It is adjusted so that a lock voltage may become 0.5±0.05V with L40 (VCO) at the time of the transmission. 0.5± 0.05V L40 (VCO) Tune Voltage Adjustment1 The degital multi meter is put on CP1 (TUNE), and adjusted so that tune voltage may become 0.7±0.05V with R59 (MAIN). 0.7± 0.05V R59 (MAIN) CP1 (TUNE) Frequency Adjustment1 The power meter, an irregular occasion meter, a frequency counter are connected at the end of the antenna. 2 Indication frequency is made 136.975MHz, and a message is transmitted. 3 It is adjusted so that frequency may be 136.975MHz± 400Hz with X1 (MAIN) with seeing a frequency counter. 136.975M Hz± 400Hz X1 (MAIN) Antenna terminal RF Power Adjustment1 made 127.525MHz. 2 A message is transmitted with 127.525MHz without irregularity. 3 It is adjusted so that transmitting output may become 9±0.5W with R150 (MAIN) with seeing the power meter.9±0.5W R150 (MAIN) Antenna terminal RF Power balance Adjustment1 A message is transmitted over and under the band, and it confirms that transmitting output is within the range of 7 - 10W. Re-adjustment is done if it is not within the range.7～10W Antenna terminal Deviation Adjustment[Adjustment condition] Adjustment frequency : Moduration Analyzer MOD : P- HPF/LPF : DE-EMP : OFF 1 R110, R121 (MAIN) are fitted to the center. 2 1kHz inputs the proper string wave of Vrms 10m from the microphone terminal, and it is made transmitting condition. It is R121 (MAIN), and it is adjusted so that a degree of irregularity may be 90%.90% R121 (MAIN) Antenna terminal 3 20dB going down (1m Vrms) makes it do the level of the microphone terminal, and it is R110 (MAIN), and it is adjusted so that a degree of irregularity may be 30%.30% R110 (MAIN) Antenna terminal Head set adjustment 1kHz inputs the signal of Vrms 25m with AG from EXTMIC (J6 : MAIN), and it is set so that irregularity may be 30% with 36 (MAIN) in the center frequency.30% R336 (MAIN) Antenna terminal RF BPF adjustment[Adjustment condition] SG level 0dBu (1kHz 30% MOD) *) A level is made to change if necessary. 1 The outside SP, multimeter are connected with SG, the SP terminal in the antenna terminal, and the core position of L9, L49, L10, L11 is preset with in the bottom. 2 Frequency is moved around 118MHz, and L9, L49, L10, L11 (MAIN) are adjusted so that AF output may become the biggest.AF MAX. L9,L49, L10,L11 (MAIN) EXT.SP 3 Frequency is made 136.975MHz, and R59 (MAIN) is adjusted so that AF output may become the biggest.AF MAX. R59 (MAIN) EXT.SP Squelch adjustment1 The neighborhood of 118MHz is inputted to either memory. 2 The power is turned on, and made the adjustment mode with pushing SQL, TS, SCAN key. 3 It is fitted to the memory ch which wrote frequency for the SQL adjustment that it was written first. 4 It confirms that indication is "sqADJ02", and a signal without the irregularity of -15dBu is inputted in the same frequency than SG.-15dBuDS1 5 SCAN key is pushed, and close level is set.SCAN 6 It confirms that indication is "sqADJ25", and the signal of the 15dBu irregular-less is inputted from SG.15dBuDS1 7 SCAN key is pushed, and a open level is set.SCAN 8 A power supply is turned off, and it gets out of the adjustment mode. *) 4 - 5 are repeated unless a power supply is turned off.

REVISSIONS 1 2 3 4 5 6 7 8 9 12 10 11 APPD. CHKD. DWN.BY:DATEMODEL DWN.NO. .. . . . . . . . . . . .. . . . . . . . . . . ICOMIcom Inc. ABCD E…

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