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DR138 - Maas Elektronik

1.
2. DR138 aus w AM FM DEMODULATION om ES ri jo yess DIAL K RE oot
3. Q210 ANT 2SC4226 136 173 9975MHz 7 212 0214 0216 0210 0211 0217 9209 9207 0203 9220 25 1875 25 4226 25 4226 DAN235E 25 3357 25 3078 RDO7 RFM70U12D 11407 5C PRE RX RF ANTSW LPF sw DRIVE gt 8c veo BUFF RF T R RE 552 gt gt 51 gt LOOP 4 0219 9201 250 FILTER 251243 53 9211 86 81 8R 8T 8T 0230 pow per 0231 pow per 742 4 0205 sw 2584215 2130 LMX1511TM Q213 19 200 4 19 200MHz DTA114EE 26 50 4 0221 vco 0205 0206 0204 25 1623 218 9202 0204 35318 5C _ 19 2904 2 2415 35 318 CONTROL 1 2904 15050 8 vco 9225 19 200MH4 P00 NOISE IF AMP MCF MX Joe ARE qe DTC144EE u DEMODULATOR o 8 O 5 0505 8 O P10 M
4. ART AUD IK k DIMEDET BUFFER AMP 5 1500 5545 T 150 3 ouse w 2 S08 IK NOUSE L 2 42 8573 AUDIO HPF 2 H Lon 9 103P 6575 FILTER 5526 542 Lc d R586 18016 018 5579 1 5 n 7 507 3 15 1 1544 I Ars it mu usec ador 34 gt mm m 3 15014 1571 1572 1 F R570 R563 255 19 2 1030 24 R524 525 2 DK 47 B gt 100R 10 1240 dcos fm lt gt 539 C540 AUDIO LPF 47400 22481 8280 IPTER e H 1503 R27 0 sc E510 8 10 DOK 10 gt 500 ic 8 E ER m om 128 mi 5 B 858 100K
5. u POWERLED FOVERORANEGTI9 2101UYOCE9 o 755011 m 5 T 2 5 4 SN Quo Vout Rb 3 TORT 4 4 2 IK ISR 1 2 3 10 BV IBP 2 1 2712 m gt 187 1 5 3333 l t 8888 IN 2999 5 1 AS 103 4 1 a 1 3 E 127 IK 2 100K 34 2 117 s BST 102P 20K Pa 7 10K I S 8 m g 88821121 36 5 3 gt PASS pi 1 5 SM Por 15 DCSWITCH T 13 TXC 1223 5 SCL SA 5 n Eig ag 5 ceo 2 IL EB 8 STE 752 2 M 2 2 2 858668888 55 156 T 3 2 3 E 16 10 PSI 5 7 a CIGSDG SE 1 P50 8 x HD 153 R u R9 Xy e DM 106 LED SC1623 2 DR SE MIC K us C3 3 022 4 965 5 AR PT 103P u v lt gt TOT 5 4 104 v EEN 9 x 4 7 NCODER EDO97120 BI 15A70 0 200 SEGM ss 2 1 SEGS SEG m SEN os 3 gt PH MCI 2 10 ime IX 5667 SEGUI 80
6. PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification Q7 SMT TRANSISTOR SOT 89 1 2SD1664 Q8 SMT DIGITAL TRANSISTOR EMT3 1 DTC144TE Q9 Q10 SMT DUAL DIGITAL TRANSISTOR SC 88A 2 NO USE U1 SMT IC TO 92 1 HT7550 1 U2 Z 10 SMT IC SQFP 64 1 R5F212A8SNFP U3 SMT IC SQFP 64 1 BL55076 U6 SMT IC SOP 8 1 AT24C128RM U1000 SMT IC SSOP24 1 NO USE 11 13 5 BEAD BLACK 0805 3 271 14 15 5 BEAD BLACK 0603 2 271 11000 11001 SMT FERRITE BEAD BLACK 0603 2 NO USE J1 ZU 10 FLAT CABLE CONNECTOR Erection type SIPM32 1 0 5S 1 32PB J2 ZU 10 JACK 1 NO USE J3 ZU 10 Mic Connector SKY8 1 HAND MIC INTERFACE J4 J5 SMT RESISTOR 0603 2 NO USE 46 5 SIP1 25M4H 1 NO USE 51 ZU 10 SWITCH 6 3 5 4 5 1 52 ZU 10 SWITCH 6 3 5 4 5 1 FUNC 53 ZU 100 DIAL 1 ENCODER 54 ZU 10 SWITCH 6 3 5 4 5 1 V M 55 ZU 10 SWITCH 6 3 5 4 5 1 MHz S6 ZU 10 SWITCH 6 3 5 4 5 1 TSQ S7 ZU 10 SWITCH 6 3 5 4 5 1 CALL 58 ZU 10 SWITCH 6 3 5 4 5 1 SQL W1 Z 10 VARIOUS RESISTOR 1 10K Y2 CRYSTAL 49S 1 19 200MHz Y1000 CRYSTAL 1 NO USE DR138 PARTS LIST MAIN UNIT Ref No Parts No Description of item Size LxW mm Qty Specification C100 C104 SMT CAPACITOR 0603 5 103 1090 105 109
7. w E APC VOLTAGE hoor poos NIE Nase D Wir e x RXVCO FREQ Lon DETECTOR Tor 1 CONTROL jon cs he SUNT Los ms mm D cu eH a 4 17 ow B 2 Ea D eu n DA ove 47 DP Quas 0356 0276 25 1623 I 2 sean D T 5 ji mm _ vs M 31 aco am ess Sie E mx 1 tu I stax mn oss 4 RT sw hea 2 cs m AN 6 E 2 LE cu gt Ta 3 2 04 20 5 Sagar FONT 04 pors Sow our m m jos 2 2R 4 1 47 i 10010 SOE we x ux 100 23 gt 1 123 3 2 En WU T cn 108 103P 100K WM tese gt aw mi 1566 Sir TEMPERATURE Source MX cd 022 yos lor DR mm P
8. 22 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R278 SMT RESISTOR 0603 1 47K 5 R279 R284 SMT RESISTOR 0603 6 NO USE R285 SMT RESISTOR 0603 1 100R 5 R286 SMT RESISTOR 0603 1 100K 5 R287 R289 SMT RESISTOR 0603 3 NO USE R290 SMT RESISTOR 0603 1 180R 5 R291 SMT RESISTOR 0603 1 330K 5 R292 SMT RESISTOR 0603 1 4 7 5 R293 R294 SMT RESISTOR 0603 2 NO USE R295 SMT RESISTOR 0603 1 2 2 5 R296 SMT RESISTOR 0603 1 180 5 R297 R299 SMT RESISTOR 0603 3 NO USE R300 SMT RESISTOR 0603 1 2 2 5 R301 SMT RESISTOR 0603 1 2K 5 R302 SMT RESISTOR 0603 1 2 2 5 R303 R304 SMT RESISTOR 0603 2 47K 5 R305 SMT RESISTOR 0603 1 4 7 5 R306 SMT RESISTOR 0603 1 47K 5 R307 SMT RESISTOR 0603 1 470R 5 R308 SMT RESISTOR 0603 1 68 5 R309 R310 SMT RESISTOR 0603 2 47K 5 R311 R312 SMT RESISTOR 0603 2 270R 5 R313 SMT RESISTOR 0603 1 560R 5 R314 SMT RESISTOR 0603 1 18 5 R315 R316 SMT RESISTOR 0603 2 22R 5 R317 SMT RESISTOR 0603 1 470K 5 R318 SMT RESISTOR 0603 1 5 6 5 R319 SMT RESISTOR 0603 1 3 9 5 23 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R320 SMT RESISTOR 0805 1 15R 5 R321 R322 SMT RESISTOR 0603 2 R323 SMT RES
9. 0603 5 102 10 50V 110 111 0603 2 104 10 112 113 0805 2 104 10 200 213 0603 14 103 10 50V 214 0603 1 USE 215 225 0603 11 103 10 226 0603 1 102 10 227 230 SMT 0603 4 104 10 231 0603 1 USE 232 237 0603 6 104 10 50V C238 SMT CAPACITOR 0805 1 104 10 50V C240 C242 SMT CAPACITOR 0603 3 104 10 50V C243 SMT CAPACITOR 0603 1 471 10 50V C244 SMT CAPACITOR 0603 1 103 1090 50V C245 C248 SMT CAPACITOR 0603 4 104 590 249 250 SMT CAPACITOR 0603 2 102 10 50V C251 SMT CAPACITOR 0603 1 33 5 50V C252 C265 SMT CAPACITOR 0603 13 102 10 50V C267 C268 SMT CAPACITOR 1206 2 102 10 50V C269 SMT CAPACITOR 0603 1 102 10 50V C270 SMT CAPACITOR 1206 1 102 10 50V C271 C280 SMT CAPACITOR 0603 10 102 10 50V C281 SMT CAPACITOR 0805 1 470 10 50V C282 SMT CAPACITOR 0603 1 470 10 50V C283 SMT CAPACITOR 0603 1 102 10 50V C284 SMT CAPACITOR 1206 1 102 10 50V DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C285 SMT CAPACITOR 0603 1 102 10 50V C286 SMT CAPACITOR 0603 1 104 10 287
10. L Tow m REGULA NE TOR RF AMP mol ous E 5 16 1 bw 3 ED sr M He A en vir 4 os 1 1 E x ous 2 3 Lov 1236 AMIM c Ma t Top ES 03 SST SWITCH pa pz ANT SWITCH Sr Dn II ax 3 B _ Lew DRIVE STAGE pe T SN Um nm Um E oa be FINALAMP Sic am D ax ai 1 BA gt 1 2 T 17 M x Peeve 1 fi 3 d 1024112501 T or wn E as au ce Genoes Tunas auzon RF AMP ig RESWITCH E i IB T eise i SP ots mi a fanaa ag 12741 ES Ros Efe x 2 ar cs M Los masan DP SP m E gt 17 i p 3 quo 2
11. M Lom E vat E w jur T i1 bs co on a ppe os Low NARROW b of 4 44 4 ex di 47 8 23773 5 g 8 5 5 E 17 M 1 Ez len 9 164 jon 8 5 PO E E en ES m IM lt 3 8 yen mus pon joo joos m x 21 S house j Ex 9 8 8 gt TE 1 MIXER poo _ 205 acres gm SUE 8 5 8 8 lt 5 AMM mer con jon joro e Em 12523 SWITCH y A INCUN OM ie all cu o9 gt m 5 9 29 5 es sr espe lt gt cu hoc DRO REDE 2 IFAMP VOLTAGE UM WIDENARROW E REGULATOR xx SWITCH gt amp MOS je tp Toi 125 5 102P WEE Es 3 ig PK gt ds 22 I p 7T ii x uz n rm cx 1 m exis Low ps ps cw m 5 Dri Ens wem VOLTAGE Rs
12. 0 1261 or less Adjacent channel selectivity Wide 70dB Narrow 60dB Intermodulation rejection ratio 60dB Spurious and image rejection ratio 70dB Audio Output 80 10 distortion 2W or higher 10 distortion Audio Output Impedance 80 DR138 CIRCUIT DESCRIPTION Frequency configuration The receiver utilizes double conversion The first IF is 38 850 MHz and the second IF is 450kHz The first local oscillator signal is supplied from the PLL circuit The circuit in the transmitter generates the necessary frequencies Fig 1 shows the frequencies V 450KHz MCF RF AF ANTSW L 4 38850MHz 0211 X2 MJLTIPLY RX a PLL MIC POWER wo AP MC AMP Fig 1 Frequency configuration TCXO 19200 The is double conversion super designed to operate in frequency range of 136 to 173 9975MHz The frequency configuration is shown in Fig 1 Front end RF amplifier An incoming signal from the antenna is applied to an RF amplifier Q206 after passing through a transmit receive switch circuit D210 are off and a band pass filter L206 L207 and varactor diodes D207 D208 After the signal is amplifie
13. 41 150 48 9 9 4 EJ EVDO RNC XN 5 x Tol 65 To 12 27 Ts TRI TSQ 51 gt p XO ACC PS Ter 5 7 gt PLATRCIOD Po m 8 65 12 20 eg o s gt gt L e IK 151 14 35 hag 1020 102 102 102P 102 102P A ZA C IC 25925 PI s m S TR pa EEEEEEE H 1 IK XIN PI5 RD m ANGECHTI9 2 d 3522002 au 5 P 85 3 5 gt gt RO9464GO FE20CS 0 A 108 A 103 000 RSPIPASSNP IC 5 Pi 82 gt BLUETOOTH INTERFACE L 25T 2 4PWB 4 4 PN 25 i 2 M PH DIR RANGEJEII9 2101UYOC EU R52 11 5 PIT ak 1 t SBB Pie 5 UART PIS CRANGE HI19 2101UYOC E9 6 R4 4 MCC Pii T 1 1008 211 ms 2 3 10 Deer lt AK E H NET MEN xx E E RANG HTI9 2101UYOCE9 102 123 KEYBL 8 2514 DICIMEE 32 SCHEMATIC DIAGRAM
14. 288 0603 2 102 10 289 0603 1 82P 5 50 290 0603 1 15 5 50V 291 292 0603 2 USE 293 0603 1 18 5 50V 294 0805 1 47 5 50V 295 0603 1 USE 296 0603 1 18 5 50 C297 SMT CAPACITOR 0603 1 2P 0 1P 50V C298 SMT CAPACITOR 0603 1 1 5P 0 1P 50V C299 SMT CAPACITOR 0603 1 4P 0 1P 50V C300 C302 SMT CAPACITOR 0603 3 10P 0 25P 50V C303 SMT CAPACITOR 0603 1 6P 0 1P 50V C304 C305 SMT CAPACITOR 0603 2 10P 0 25P 50V C306 SMT CAPACITOR 0603 1 10 0 25 50V C307 SMT CAPACITOR 0603 1 2P 0 1P 50V C308 C309 SMT CAPACITOR 0603 2 NO USE C310 C311 SMT CAPACITOR 1210 2 NO USE C312 C313 SMT CAPACITOR 1206 2 NO USE C314 SMT CAPACITOR 1210 1 NO USE C315 C317 SMT CAPACITOR 0603 3 NO USE C318 C319 SMT CAPACITOR 1206 2 NO USE C320 SMT CAPACITOR 0603 1 103 10 50V C321 SMT CAPACITOR 0603 1 22 5 50V C322 SMT CAPACITOR 0603 1 47 5 50 C323 SMT CAPACITOR 1206 1 22P 5 50V DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C324 SMT CAPACITOR 0603 1 5P 0 1P 50V C325 SMT CAPACITOR 0603 1 13P 5 50V C326 C338 SMT CAPACITOR 0603 13 471 10 50V C339 SMT CAPACITOR 0603 1 682 10 50V C340 SM
15. 7 PC board views 010 oi IOR 39 O 981 501 Q 0 138 DR138 PC board views 2 gt 3 5 EN M A e E 40 DR 138 438 series Mechanical Parts Val Model Instruction Manual LCD Panel Main Unit LCD Unit DR 138 PS0665 PS0665A 20 1008 ZADM138 ZADL138 DR 438 PS0665A ZDP1012 ZADM438 ZADL438 UpDown Key Connect Cable ZFP1006 ZUA1004 Hook Screw Hook ZAA1005 ZFM1002 Mic Main Cable ZUA1003 ZEY1000 EMS74 Rear Case 7 1007 Main Unit ZUP1021 EMS74 PTT Switch ZFP1005 ANT CN ZUE1000 lt Bracket ZFM1001 16key Rubber ZFG1007 EMS74 Front Case VE N ZKM1006 gt Y OX i ack Screws gt Esa CNN NN NN NS lt 1000 EMS74 Front Switch gt 7 1004 N e ES Mn Rear Screw A Tapping Screws ZAJ1001 D
16. T 24 lt 4A R560 52 AD s 82226 ae NM902 Was NM90 SPLATTER 3P 0 FILT 470R R583 E 80 15 LA4600 150K pus TK mie 8 goo 18506 2 gt 3503 SPM v 8 8 2 da 3 1 1521 5 3 5 1522 aos ee ei 75 38 SUD MICMUTE ed 7K al e 104P 58 I 52 ON 8 2 lo 33OuFDSV I0 16 SPKSRS6 5 3 1 250 2 519 35 mE 1520 pi B 2 EX _ 77 5 SUBB 2 SUBO 2 x 3 2 AUDIO AMP 34 SCHEMATIC DIAGRAM ED B 100 2581386 SBE MC7808 8C MC78L05 5 4 4 4 4 4 48V 4 4 4 3 MAIN DC13 8V C100 C105 RO 106 0101 A A 103P 102P pio 500 102 1101 21 103 z 102 lt 102 E103 zd 1_ E104 227 4704 75 10516 c107 lt 10 47 0uF 25V 10 16 CI110 9 103P 474 25 C111 47uB25V 101 102 102 104P 104P a xd 4 4 GND 21 lt 108 R100 102P VOLTAGE VOLTAGE REGULATOR REGULATOR CURRENT 0102 VEM 0106 8R 2SB624 2SB1132 8T PROTECTION 4 3 T 4 E 4 4 4 lt 12 lt 4 104P 2 103P 1101 R105 E105 0103 47K 47uB25V LICII48 5 1 1
17. 1 39K 5 R582 SMT RESISTOR 0603 1 680K 5 R583 SMT RESISTOR 0603 1 150 590 R584 SMT RESISTOR 0603 1 6 8K 5 R585 SMT RESISTOR 0603 1 8 2K 5 R586 SMT RESISTOR 0603 1 10K 5 R587 SMT RESISTOR 0603 1 560R 5 R588 SMT RESISTOR 0603 1 150 590 26 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R800 R807 SMT RESISTOR 0603 8 NO USE RT200 SMT RESISTOR ARRAY 0603 1 100K D100 SURGE ABSORBER 1 ZSA5A27 D200 D201 SMT DIODE SOT 416 2 DAN235E D202 SMT CAPACITOR 0603 1 390P 5 50V D203 SMT DIODE SOT 416 1 DAN235E D204 SMT CAPACITOR 0603 1 390 5 50V D205 D208 SMT VARIABLE CAPACITANCE DIODE SC 79 4 HVC376B D210 C211 DIODE DO 35 2 L407CDB D212 D213 SMT DIODE 1206 2 NO USE D214 SMT DIODE SOT 523 1 155362 0215 SMT VARIABLE CAPACITANCE DIODE 0603 1 NO USE D216 SMT VARIABLE CAPACITANCE DIODE 0805 1 NO USE D217 SMT VARIABLE CAPACITANCE DIODE 0805 1 1SV324 V8 D218 SMT VARIABLE CAPACITANCE DIODE 0805 1 NO USE D219 D220 SMT VARIABLE CAPACITANCE DIODE 0805 2 1SV324 V8 D221 SMT VARIABLE CAPACITANCE DIODE 0805 1 NO USE D222 SMT VARIABLE CAPACITANCE DIODE 0805 1 1SV324 V8 D223 SMT VARIABLE CAPACITANCE DIODE 0805 1 NO USE D224 D225 SMT DIODE 0805 2 1SS355 D226 D227 SMT DIODE SC 79 2 MA2S111 D228 SMT DIODE 0805 1 NO USE D229 SMT ZENER DIODE 0805 1 8 2V D230 D231 SMT DIODE SC 70 2 MA742 D232
18. SMT VARIABLE CAPACITANCE DIODE 0805 1 1SV214 D233 D234 SMT DIODE SC 79 2 NO USE D500 SMT DIODE SOT323 1 NO USE D501 SMT DIODE SC70 1 1SS372 27 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification D502 SMT DIODE SOT 416 1 DAN222 Q100 SMT TRANSISTOR SC 62 1 2SB1386 Q101 SMT TRANSISTOR SOT 23 1 2SB624 Q102 SMT TRANSISTOR SC 62 1 2SB1132 Q103 Q104 SMT DIGITAL TRANSISTOR SC70 2 DTC114EU Q105 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE Q106 Q107 SMT DUAL DIGITAL TRANSISTOR SC 88A 2 UMC4N Q108 SMT DIGITAL TRANSISTOR EMT3 1 DTC114EE Q200 Q201 SMT DUAL DIGITAL TRANSISTOR SC 88A 2 UMC4N Q202 SMT DUAL DIGITAL TRANSISTOR SC 88A 1 NO USE Q203 SMT DIGITAL TRANSISTOR EMT3 1 DTA114YE Q204 SMT TRANSISTOR SC 70 1 2SC4215 Q205 Q206 SMT FET SOT 143 2 3SK318 Q207 SMT TRANSISTOR SC 70 1 2SC4226 Q208 SMT TRANSISTOR SC 70 1 NO USE Q209 Q210 SMT TRANSISTOR SC 70 2 2SC4226 Q211 SMT TRANSISTOR SC 70 1 2SC4215 Q212 SMT FET SOT 89 1 2SK3078A Q213 SMT DIGITAL TRANSISTOR EMT3 1 DTA114EE Q214 Z 10 SMT FET PLD 1 RD07 Q216 Z 10 SMT FET TO500 1 RFM70U12D Q217 Q218 SMT FET SOT 323 2 2SK1875 Q219 SMT FET SOT 523 1 2SJ243 Q220 SMT TRANSISTOR SOT 89 1 2SC3357 Q221 SMT TRANSISTOR SOT 23 1 2SC1623 Q223 Q224 SMT TRANSISTOR SOT 523 2 NO USE Q225 SMT TRANSISTOR EMT3 1 2SC4617 Q500 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE 28 DR
19. 1 R103 R106 33 DC SWITCH 1102 10K DC SWITCH VAM 0107 4 3 0108 0104 1 L2 DICII4FE 1010114147 lt 113 104 2 DICIA4EE 5 1 TEM Ec 138 AF 138VHF RF 138 AF Sch 138VHF RF Sch PLL CLOCK LINE PLL CLOCK LINE 8TXCONTROL PLL DATA LINE _ PLL DATA LINE PLL STB ENABLE gt PLL STB ENABLE C 8RX CONTROL PLL LD LIN PLL LD LINE II AMIMCONIROL SQUELCH DED lt SQUH CH DET MEX MODAUDIO 2 MODAUDIO POWER CONIROL AMSW _ 1 MSW 138 SCRAMBLER S RAV SEN 5 MODSUB MODSUB RX N ej RXIN WIDE NARROW gt WIDHNARROW RX OUT gt RXOUT RSSI c TXIN TXJN XXIX gt XXIX TXOUT gt FREQOONT FREQCONT CTRL lt ASQ 7 AF SQ TEM T TEMP 35 DR138 BLOCK DIAGRAM DR138
20. 103P E 6 BD 14 REFEREN 2 1535 104P en 2 285 ea BB 1 Bon 5 VOLTAGE 4 4 100K 100K ex gt 2 1512 102 0 100 1 RSSI 15 c 100K 103 11521 505 516 m55 15280 CTCSS DCS LPF A IK 390K 20K p 77 4 N FILTER Gad 1501 gt 523 104 AWN i 1818 ie 100K ae 10480 E EM VI RD Em 2 M tus H BU 2 osr 1517 BU R503 ni Ma 16 ni 4 I 21 w Tos x COPMANDER 22uE 16V 1515 ELEM 103P R548 515 1549 6 10 Hb RESET pluo 12 di R517 103P T 1516 IK DAT I mm 1502 BI 58 N Bw SUB 9 Vino LIS Im 1uB16V 10K lt 1 E x rnvo 3 NS gt DIGITAL RO lt 135914914 POTENTIOMETER 8 AWN Eg wn Bis MIC AMP WIENSEROV A R547 E e IDC 5 C K AMSW 5903 1507 47381206 1 4 KX RVIX 1545 P 13 MILL l 253 P 111 CLOCK LIN M PLL DATA INE 10400 150K ML SIB ENABLE 3320 R539 5044 10480 PLL LD LINE 152P0 100K 4 3 a 546
21. 138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification Q502 SMT TRANSISTOR SC 70 1 2SC4181 U100 10 SMT IC TO 220 1 MC7808 U101 10 SMT IC TO 92 1 MC78L05 U200 SMT IC SSOP16 1 TA31136F U201 10 SMT IC TO 92 1 MC78L05 U202 SMT IC SSOP8 1 LM2904V U203 10 SMT IC TO 220 4 1 KIA278R06PI U204 SMT IC SSOP8 1 LM2904V U205 10 SMT IC SSOP20 1 LMX1511TM U500 SMT IC SOP16 1 MC33111 U501 U504 SMT IC SSOP14 4 NJM2902 U505 SMT IC SSOP24 1 M62364F U506 10 SMT IC SIP10F 1 LA4600 U800 SMT IC SSOP16 1 NO USE L200 SMT SMALL FIXED INDUCTOR 0603 1 68NH L201 SMT WIRE WOUND INDUCTOR 0805 1 560NH L202 SMT WIRE WOUND INDUCTOR 0805 1 330NH L203 SMT SMALL FIXED INDUCTOR 0603 1 NO USE L204 L207 SMT AIR CORE COIL 4 8T L208 SMT RESISTOR 0805 1 OR L209 SMT RESISTOR 0603 1 OR L210 SMT SMALL FIXED INDUCTOR 0603 1 82NH L211 SMT SMALL FIXED INDUCTOR 0603 1 100NH L212 SMT WIRE WOUND INDUCTOR 0805 1 68NH L213 L214 SMT WIRE WOUND INDUCTOR 0805 2 NO USE L215 SMT WIRE WOUND INDUCTOR 0805 1 56NH L216 L217 SMT FERRITE BEAD BLACK 0805 2 30T L218 SMT SMALL FIXED INDUCTOR 0603 1 10NH 29 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification L219 SMT SMALL FIXED INDUCTOR 0603 1 22NH L220 SMT AIR COR
22. 14 102 10 50V C21 SMT CAPACITOR 0603 1 103 10 50V C22 SMT CAPACITOR 0603 1 104 10 23 0603 1 103 10 24 0603 1 102 10 25 27 SMT 0603 3 103 10 28 0603 1 102 10 29 0603 1 104 10 C30 SMT CAPACITOR 0603 1 103 10 C31 SMT CAPACITOR 0603 1 NO USE C32 SMT CAPACITOR 0603 1 105 10 50V C33 C34 SMT CAPACITOR 0603 2 473 10 50V C35 C36 SMT CAPACITOR 0603 2 273 10 50V C37 SMT CAPACITOR 0603 1 225 10 50V C38 SMT CAPACITOR 0603 1 103 10 50V C39 SMT CAPACITOR 0603 1 102 10 50V C40 SMT CAPACITOR 0603 1 22P 5 50V C41 SMT CAPACITOR 0603 1 102 10 50V C42 SMT CAPACITOR 0603 1 20P 5 50V C43 C44 SMT CAPACITOR 0603 2 103 10 50V C45 SMT CAPACITOR 0603 1 102 10 50V C46 SMT RESISTOR 0603 1 68K 5 10 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C48 SMT CAPACITOR 0603 1 100 5 50V C49 SMT CAPACITOR 0603 1 225 10 50V C50 SMT CAPACITOR 0603 1 104 10 50V C51 SMT CAPACITOR 0603 1 8P 0 1P 50V C52 SMT CAPACITOR 0603 1 103 10 50V C53 SMT CAPACITOR 0603 1 102 10 50V C54 C55 SMT CAPACITOR 0603 2 102 10 50V C1000 C1016 SMT CAPACITOR 0603 17 NOUSE E1 ELECTRO 4x8 1 22uF25V E2 ELECTRO 4x8 1 47uF 10V E3 SMT TANTALUM CAPACI
23. 2902 C 4 05 0502 0502 i a103 E DAN222 RESET U20 0104 586 BACKLIGHT 3SC4148 1 MC78L05 DTC114EU P06 P27 11460 im E roe AGC P P05 l AGC sw DET P20 P51 10 5 sw 25 20 P07 sw 9 21 52 02 P11 a lt P23 60 7 624 61 RSF212A8SNFP 1 1 002 25 06 2SC1623 155372 26 6 883 258624 07 250468 P62 DS1 54 8R lt AVR 0107 0106 60 NEL 4 como 3 Poy UMC4N UMC4N LCD DRIVE m 0108 0203 ut P54 HT7550 1 Pow LED N 2 36073 VAM lt sw VFM sw 00112 66 KIA278RO6PI D8 ES WOT C 9 5M AR sw 09 8155076 02008 a 2 z BE DEN tarssoir 2 2 0105 DTC114EE Y D6 DTC114EE js 1501 BUFFER 07 155372 AVR RESET RESET 3 77 Wi DIMEDET AMP HSC277 27 sw oe 16 NOUSE 5 SW P23 10K L 19 200MM7 2 U101 DTC114EE B UART MC78L05 DTC144EE 5M 36 DR138 DR138 PC board views 2 ES oe 212 i 2 e 0 3 91 n2 P
24. 5 50V C383 SMT CAPACITOR 1210 1 82P 5 50V C384 C385 SMT CAPACITOR 1206 2 12P 5 50V C386 SMT CAPACITOR 0603 1 15P 5 50V C387 SMT CAPACITOR 1210 1 120P 5 50V C388 C392 SMT CAPACITOR 0603 5 NO USE C393 SMT CAPACITOR 1206 1 1 0 1 50V C394 SMT CAPACITOR 0603 1 5P 0 1P 50V C395 SMT CAPACITOR 0603 1 NO USE C396 SMT CAPACITOR 0603 1 9P 0 25P 50V C397 SMT CAPACITOR 0603 1 15P 5 50V C398 C401 SMT CAPACITOR 0603 4 0 5P 0 1P 50V C402 SMT CAPACITOR 0603 1 12P 5 50V C403 SMT CAPACITOR 0603 1 0 75P 0 1P 50V C404 SMT CAPACITOR 0603 1 33P 5 50V C405 SMT CAPACITOR 0603 1 18P 5 50V C406 SMT CAPACITOR 0603 1 103 10 407 0603 1 27P 5 50V C408 SMT CAPACITOR 0603 1 2P 0 1P 50V C409 SMT CAPACITOR 0603 1 30 5 50V DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C410 C411 SMT CAPACITOR 0603 2 47P 5 50V C500 C509 SMT CAPACITOR 0603 10 103 10 50V C510 C515 SMT CAPACITOR 0603 5 102 10 50V C516 C519 SMT CAPACITOR 0603 4 104 10 50V C520 C526 SMT CAPACITOR 0603 7 104 5 527 0603 1 82P 5 50 C528 C530 SMT CAPACITOR 0603 3 NO USE C531 SMT CAPACITOR 0603 1 39P 5 C532 SMT CAPACITOR 0603 1 33P45 50V C533 SMT CAPACITOR 0603 1 680 10 50V C534 SMT CAPACITOR 0805 1 474 10 50V C535 SMT CAPACITOR 0805 1 474 5 50 C536 C537
25. 6 SEGI PIT IX Gal SEGI NOUSE JR62 30 T SEGIT gt si SE Lo MENU gt p ms 0 5 SEG I ADJUASIMENT M 1j m s 253 2 E m SECT ES HFK 5606 ms AUR 1 5 5 SEGS SEGE y v 2 TXLED TK 39 88 00 2 202292 55076 _ 7 RM POL elo les z E SEES 1 _ 8 8 1 t K UARTPART xv m 2 IRs 11 m n act R UART TA75SDIF 102P P86 m IOR 2 md IK PSS STEREO 566 JRas 104P TK ca ISK 105 R72 100p 3 1 4 Pio Ds XII 1 ESSE PU gt e UART_2 e e e o Drone 10 T 1181 yea ge 2852 2 105 2 10K 155577 262 A 285 154 es Rs 19 32572225 tox l 1 1 9 9 6322 s 3202 8381 2 gt 272 SK a wuss s 1 MODE gt H i 11 Px 4 5 REST PH 5 29 PH SL CALL 3 PLAINCOUE 4 x 4 REST REST promo PS 7 gt 32 131 FUNC S IDE INTERFACE P
26. 62364F 3 8 1 XF200 XF201 P13 O D A 38 85 2 82 02 863 CONV D A D A E 8R 8R 5 CONV 9505 O ma CONV 1 2902 0 4 0200 0201 0205 0206 RFBPF RFBPF TEMPERATURE D M62364F1578 8 1 DAN235E DAN235E TUNE PROTECTION CONV 1 0505 pat CF200 BUFFER 207 208 sw sw 1 4 62364 1 8 0505 NARROW HVC376 FILTER 62364 4 8R gt DCANP lt 9504 n MIM2902 3 4 4 1 z U202 5 0 UART 0505 ae NARROW EE WDE 1M2904V A 2 ko 641 14623 64 6 8 CON W 2 U501 U501 U502 U500 U505 0506 3 7 U504 1 NJM2902 A 4 NJM2902 B 4 NJM2902 MC33111 M62364F 7 8 8 8 DTC144EE LA4600 2902 2 4 MIC p60 1 gt 1502 1 BUFFER ai a sw _ 04 Lod MIC Qs 9505 0504 6 2147017 DTC114EE AT24C128RM 2SC1623 M62364F 2 8 NJM2902 1 4 4 4 4 4 ARSQ SP O 010 PANDER M 5C P63 2 P61 SBE 77 T us E 1 rn EEPRO 5M 5c RX A lt seo DIMF DET 0100 0100 C pea Gin 2 s KEYBACKLIGHT EESDT ee REFERENCE Q102 MC7808 2581386 pes M 20285 VOLTAGE 2581132 ere 25 28325 EEPCK Em sc P62 021 6 gt 0501 8T sw gt sw CTCSS DCS U503 8 UART POT NM2902 NIM
27. CITOR A type 1 6 8uF 20 16V E212 SMT TANTALUM CAPACITOR A type 1 0 68uF 20 35V E500 E509 SMT TANTALUM CAPACITOR A type 10 1uF 20 16V E510 E513 SMT TANTALUM CAPACITOR A type 4 10uF 20 10V E514 SMT TANTALUM CAPACITOR A type 1 NO USE E515 SMT TANTALUM CAPACITOR A type 1 10uF 20 10V E516 SMT TANTALUM CAPACITOR A type 1 4 7uF 20 6 3V E517 SMT TANTALUM CAPACITOR A type 1 2 2UF 20 16V E518 SMT CAPACITOR 1206 1 473 10 50V E519 ELECTRO 4x8 1 4 7 uF16V E520 ELECTRO 4x8 1 10 uF16V E521 ELECTRO 8x15 1 330uF25V E522 SMT TANTALUM CAPACITOR A type 1 2 2UF 20 10V E523 SMT TANTALUM CAPACITOR A type 1 2 2UF 20 16V 20 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R100 SMT RESISTOR 2010 1 470R 5 R101 SMT RESISTOR 0603 1 4 7K 5 R102 SMT RESISTOR 0603 1 10K 5 R103 SMT RESISTOR 0603 1 3 3 5 R104 R105 SMT RESISTOR 0603 2 47K 5 R106 SMT RESISTOR 0805 1 1K 5 R200 SMT RESISTOR 0603 1 15K 5 R201 SMT RESISTOR 0603 1 22K 5 R202 SMT RESISTOR 0603 1 18K 5 R203 SMT RESISTOR 0603 1 3 3 5 R204 R210 SMT RESISTOR 0603 7 10K 5 R211 SMT RESISTOR 0603 1 270K 5 R212 SMT RESISTOR 0603 1 27K 5 R213 SMT RESISTOR 0603 1 10K 5 R214 SMT RESISTOR 0603 1 15K 5 R215 R216 SMT RESISTOR 0603 2 10K 5 R217 SMT RESISTOR 0603 1 100K 5 R218 SMT RESISTOR 0603 1 47K 5 R219 R220 SMT RESISTOR 0603 2 10K 5 R221 SMT RESISTO
28. CO for direct FM modulation See Fig 13 TCXO MOD DCS CTCSS X200 U205 Txo Tif 02 CPU U505 U504 D A 2T 5T DTMF ZSTM vco FILTER Fig 13 Encode circuit Decode DCS CTCSS DTMF 2T 5T The signal from AFWN entering into AF signal and higher audio frequencies output by pin 1 of U501 A are cut by low pass filter U503 and amplified then led to pin 51 of CPU The input signal is compared with the programmed tone frequency code in the CPU The squelch will open when they match The signal DTMF DET goes to 002 52 of CPU U2 The DTMF 2T 5T input signal from the DTMF DET goes to compared U2008 The compared signal goes to the CPU for processing and be decoded within the CPU U2 See Fig 14 DTMF DET U2008 DTMF 2T 5T COMPARATOR 002 AMP U2 CPU U503 DCS CTCSS AFWN gt 001 BUFFER AMP FILTER Fig 14 Decode circuit DR138 CIRCUIT DESCRIPTION m D A Converter The D A converter U505 is used to adjust MO modulation AF volume TV voltage FC reference voltage and PC POWER CONTROL voltage level Adjustment values are sent from the CPU as serial data The D A converter has a resolution of 256 and the following relationship is valid Power Supply Circuit When the POWER switch on the display unit is pressed the power port on the display unit w
29. DR 138 Service Manual Specifications Circuit Description Parts list Schematic Diagram Block Diagram PC Board View Mechanical Parts ALINCO INC DR138 SPECIFICATIONS General Frequency Range RX 136 174MHz TX 136 174MHz Number of channels 200 Operation mode FM 16 Wide 11 Narrow PLL Stepping 2 5 5 6 25 8 33 10 12 5 20 25 30 50KHz Antenna Impedance 500 Working temperature 20 C 60 Power Supply 13 8V DC 15 11 7 15 8 Grounding Method Negative ground Current Drain Less than 300mA on standby Less than 600mA on receive Less than 10A on transmit Frequency Stability 2 5ppm Dimensions W x H x D Dimensions including protrusions 145 x 47 x 190 mm Weight Including microphone Approx 1 2kg TRANSMITTER Power Output High 60W Mid 25W Low About 10W Modulation Reactance modulation Maximum frequency deviation Wide 5kHz Narrow 2 5 2 Spurious emission 60dB Adjacent channel power Wide 70dB Narrow 60dB Noise and hum ratio Wide 40dB Narrow 36dB Microphone Impedance 1KQ RECEIVER Receiver circuitry Double conversion superheterodyne Intermediate Frequency 1st 2nd 38 85MHz 450kHz Sensitivity 124 SINAD Wide 0 251 or less Narrow 0 35 or less Squelch Sensitivity
30. E COIL 1 3T L221 SMT AIR CORE COIL 1 2T L222 AIR CORE COIL 1 9 5T L223 SMT WIRE WOUND INDUCTOR 0805 1 NO USE L224 AIR CORE COIL 1 1T L225 AIR CORE COIL 1 2 5T L226 L229 AIR CORE COIL 4 4 5T L230 L231 SMT WIRE WOUND INDUCTOR 0805 2 NO USE L232 SMT AIR CORE COIL 1 NO USE L233 L234 SMT SMALL FIXED INDUCTOR 0603 2 10uH 1235 WIRE WOUND INDUCTOR 0805 1 33NH L236 SMT WIRE WOUND INDUCTOR 0603 1 100NH L237 L238 SMT SMALL FIXED INDUCTOR 0603 2 10uH L239 SMT WIRE WOUND INDUCTOR 0603 1 220NH L240 L241 SMT FERRITE BEAD BLACK 0603 2 271T L242 SMT RESISTOR 0603 1 4 7K 5 L243 SMT FERRITE BEAD BLACK 0603 1 271T L244 SMT SMALL FIXED INDUCTOR BLOVE 2520 1 10uH L245 L246 AIR CORE COIL 2 9 5T L247 SMT WIRE WOUND INDUCTOR 0805 1 47NH L248 SMT SMALL FIXED INDUCTOR 0603 1 22NH L249 L250 SMT FERRITE BEAD BLACK 0603 2 271T L251 L252 SMT SMALL FIXED INDUCTOR 0603 2 560NH CB200 CERAMIC FILTER 1 C24 CF200 Z 10 CERAMIC FILTER 1 CFW450G CF201 Z 10 CERAMIC FILTER 1 CFW450E 200 5 CAPACITOR 1206 1 5P 0 25P 50V 30 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification CV201 SMT CAPACITOR 1206 1 6P 0 25P 50V J500 ZU 10 FLAT CABLE CONNECTOR Erection type SIPM32 1 0 5S 1 32PB J501 ZU 10 MIC SOCKET 3 5mm SD 3 5A 1 PHONE DC J502 ZU 10 JACK 1 SP JACK J503 JACK SIP 6 1 5mm 1 CON6 J504 JACK SIP 2 2 0mm 1 CON2 LS500 SPEAKER 1 SPK 8R 56 VR200 SMT VARIOUS RESISTOR
31. ISTOR 0603 1 8 2K 5 R324 SMT RESISTOR 0805 1 330R 5 R325 SMT RESISTOR 1206 1 330R 5 R326 SMT RESISTOR 0603 1 560R 5 R327 SMT RESISTOR 0603 1 NO USE R328 SMT RESISTOR 0603 1 3 9 5 R329 SMT RESISTOR 0603 1 NO USE R330 SMT RESISTOR 0603 1 47K 5 R331 SMT RESISTOR 0603 1 100K 5 R332 SMT RESISTOR 0603 1 10 590 R333 SMT RESISTOR 0603 1 100R 5 R334 SMT RESISTOR 0603 1 100K 5 R335 SMT RESISTOR 0603 1 4 7 5 R336 SMT RESISTOR 0603 1 2 2 5 R337 SMT RESISTOR 1206 1 33R 5 R338 SMT RESISTOR 0603 1 330R 5 R339 SMT RESISTOR 0603 1 220K 5 R340 SMT RESISTOR 0603 1 270K 5 R341 SMT RESISTOR 0603 1 15K 5 R342 SMT RESISTOR 0603 1 R343 SMT RESISTOR 0603 1 220K 5 R344 SMT RESISTOR 0603 1 4 7K 5 R345 SMT RESISTOR 0603 1 NO USE R346 SMT RESISTOR 0805 1 330R 5 R500 SMT RESISTOR 0603 1 470R 5 R501 SMT RESISTOR 0603 1 6 8 5 24 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R502 R506 SMT RESISTOR 0603 5 10K 5 R507 SMT RESISTOR 0603 1 3 3 5 R508 R510 SMT RESISTOR 0603 2 47K 5 R510 SMT RESISTOR 0603 1 22K 5 R511 R517 SMT RESISTOR 0603 7 1K 5 R518 SMT RESISTOR 0603 1 10K 5 R519 SMT RESISTOR 0603 1 2 2K 5 R520 SMT RESISTOR 0603 1 1K 5 R521 SMT RESISTOR 0603 1 20K 5 R522 SMT RESISTOR 0603 1 22K 5 R523 SMT RESISTOR 0603 1 1 5 590 R524 SMT RESISTOR 0603 1 100R 5
32. R 0603 1 1K 5 R222 SMT RESISTOR 0603 1 NO USE R223 R224 SMT RESISTOR 0603 2 22K 5 R225 SMT RESISTOR 0603 1 47K 5 R226 R227 SMT RESISTOR 0603 2 22K 5 R228 SMT RESISTOR 0603 1 12K 5 R229 SMT RESISTOR 0603 1 820R 5 R230 SMT RESISTOR 0603 1 1 5 R231 SMT RESISTOR 0603 1 470R 5 21 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R232 SMT RESISTOR 0603 1 NO USE R233 R235 SMT RESISTOR 0603 3 470R 5 R236 SMT RESISTOR 0603 1 100R 5 R237 SMT RESISTOR 0603 1 10R 5 R238 SMT RESISTOR 0603 1 150R 5 R239 SMT RESISTOR 0603 1 NO USE R240 SMT RESISTOR 0603 1 100R 5 R241 SMT RESISTOR 0603 1 NO USE R242 R243 SMT RESISTOR 0603 2 100R 5 R244 SMT RESISTOR 0603 1 220R 5 R245 SMT RESISTOR 2010 1 100R 5 R246 SMT RESISTOR 0603 1 220R 5 R247 R249 SMT RESISTOR 0603 3 100 5 R250 SMT RESISTOR 0603 1 39K 5 R251 R256 SMT RESISTOR 0603 6 100 5 R257 SMT RESISTOR 0603 1 300K 5 R258 R260 SMT RESISTOR 0603 3 100K 5 R261 SMT RESISTOR 0603 1 680R 5 R262 SMT RESISTOR 0603 1 560R 5 R263 R265 SMT RESISTOR 0603 3 1 5 R266 SMT RESISTOR 0603 1 NO USE R267 SMT RESISTOR 0603 1 560R 5 R268 R270 SMT RESISTOR 0603 3 1 5 R271 SMT RESISTOR 0603 1 6 8 5 R272 R273 SMT RESISTOR 0603 2 220R 5 R274 SMT RESISTOR 0603 1 18K 5 R275 SMT RESISTOR 0603 1 NO USE R276 R277 SMT RESISTOR 0603 2 470K 5
33. R525 SMT RESISTOR 0603 1 100 5 R526 SMT RESISTOR 0603 1 180K 5 R527 R528 SMT RESISTOR 0603 2 100 5 R529 SMT RESISTOR 0603 1 24K 5 R530 R539 SMT RESISTOR 0603 10 100 5 R540 SMT RESISTOR 0603 1 NO USE R541 SMT RESISTOR 0603 1 1K 5 R542 R544 SMT RESISTOR 0603 3 NO USE R545 SMT RESISTOR 0603 1 12K 5 R546 SMT CAPACITOR 0603 1 473 10 50V R547 SMT RESISTOR 0603 1 27K 5 R548 R550 SMT RESISTOR 0603 3 2 2K 5 R551 SMT RESISTOR 0603 1 3 9K 5 R552 R553 SMT RESISTOR 0603 2 1M 5 R554 R559 SMT RESISTOR 0603 6 R560 SMT RESISTOR 0603 1 18K 5 25 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R561 SMT RESISTOR 0603 1 120 590 R562 SMT RESISTOR 0603 1 33K 5 R563 SMT RESISTOR 0603 1 470 5 R564 SMT RESISTOR 0603 1 390K 5 R565 SMT RESISTOR 0603 1 33K 5 R566 SMT RESISTOR 0603 1 56 5 R567 SMT RESISTOR 0603 1 120 5 R568 SMT RESISTOR 0603 1 56 5 R569 SMT RESISTOR 0603 1 12K 5 R570 SMT RESISTOR 0603 1 68K 5 R571 SMT RESISTOR 0603 1 25 5 1 R572 SMT RESISTOR 0603 1 5 11 1 R573 SMT RESISTOR 0603 1 634K 1 R574 SMT RESISTOR 0603 1 15 8 190 R575 SMT RESISTOR 0603 1 29 4 1 R576 SMT RESISTOR 0603 1 11 5 1 R577 SMT RESISTOR 0603 1 150K 1 R578 SMT RESISTOR 0603 1 4 22K 1 R579 SMT RESISTOR 0603 1 715 1 R580 SMT RESISTOR 0603 1 18K 5 R581 SMT RESISTOR 0603
34. RFAMP geile 2804226 Fig 8 Transmitter system m APC Circuit The automatic transmission power control APC circuit detects part of a final amplifier output with a diode D230 D231 and applies a voltage to U204 U204 compares the control voltage generated by the D A converter U505 with the detection output voltage U204 generates the voltage to control Q214 and Q216 and stabilizes transmission output The APC circuit is configured to protect over current of Q214 and Q216 due to fluctuations of the load DR138 CIRCUIT DESCRIPTION at the antenna end and to stabilize transmission output at voltage and temperature variations See Fig 9 ANT V Q220 Q212 Q214 Q216 D210 D211 203 L DRIVE STAGE gt DRIVE __ FINAL ANTSW LPF POWER D230 D231 DET U204 VR200 PC 505 14pin CONTROL Fig 9 APC Circuit Control Circuit The CPU carries out the following tasks See Fig 10 Controls the WIDE NARROW TX RX outputs Controls the display unit Controls the PLL U205 Controls the D A converter U505 and adjusts the volume modulation and transmission power 1 2 3 4 WH 0505 D A converter U2 CPU U205 PLL Fig 10 Control circuit m Memory Circuit The transceiver h
35. RIE SIS ZAJ1000 Coiled Cord 1 lt gt lt Washer ZUE1001 cm ZAZ1001 Fuse ZEF1000 Val Front Case LCD Panel VR knob ZKM1005 Val ZNK1003 Case Screws Dial Nut LCD Display 7key Rubber Ring Encoder knob 5 washer ZAA1004 ZAN1001 ZEL1001 ZFG1006 ZNK1005 ZNK1004 ZAZ1000 41 ALINCO INC Yodoyabashi Dai bldg 13F 4 4 9 Koraibashi Chuo ku Osaka 541 0043 Japan Phone 81 6 7636 2362 Fax 81 6 6208 3802 E mail export alinco co jp Dealer Distributor Copyright Alinco Inc Osaka Japan PM0119 FNEH NI
36. ROTECTION POTVSW s 3 ex 85 SWITCH isvan T I A RES N Em o mr Los oe D P 7 sea 208 TS a mm ca P 21168 4 2 MODULATION CHARGEPUMP E Em 7 quo gt Sorar mn RFAMP PLL SYNTHESIZER cns Lom Lem 5 1 Wir tP 10 IV 33 DR138 SCHEMATIC DIAGRAM
37. SMT CAPACITOR 0603 2 390 1090 50V C538 SMT CAPACITOR 0603 1 273 590 50V C539 SMT CAPACITOR 0603 1 224 5 50V C540 SMT CAPACITOR 0603 1 182 590 50V C541 SMT CAPACITOR 0603 1 393 5 542 551 0603 10 103 590 50V 552 0603 1 104 590 C553 SMT CAPACITOR 0603 1 473 5 50V C554 SMT CAPACITOR 0603 1 272 5 50V C555 SMT CAPACITOR 0603 1 152 590 50V C556 SMT CAPACITOR 0603 1 102 5 50V C557 SMT CAPACITOR 0603 1 105 10 50V C558 SMT CAPACITOR 0603 1 332 5 C559 SMT CAPACITOR 0603 1 680P 5 50V C560 SMT CAPACITOR 0603 1 102 590 50V C561 SMT CAPACITOR 0603 1 47P 5 50V 19 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C562 SMT CAPACITOR 0603 1 333 5 50V C564 C565 SMT CAPACITOR 0603 2 104 590 C800 C807 SMT CAPACITOR 0603 7 NO USE E100 E101 ELECTRO 10x15 2 470uF25V E102 E105 ELECTRO 4x8 4 47uF25V E200 ELECTRO 4 8 1 47uF25V E202 SMT TANTALUM CAPACITOR A type 1 0 22uF 20 35V E203 ELECTRO 4 8 1 100uF16V E204 ELECTRO 4 8 1 47uF25V E205 SMT TANTALUM CAPACITOR B type 1 33uF 20 10V E206 E207 SMT TANTALUM CAPACITOR A type 2 10uF 20 10V E208 SMT TANTALUM CAPACITOR A type 1 4 7uF 20 10V E209 SMT TANTALUM CAPACITOR A type 1 0 22uF 20 35V E210 SMT TANTALUM CAPACITOR A type 1 NO USE E211 SMT TANTALUM CAPA
38. SMT RESISTOR 0603 1 2 2K 5 R58 SMT RESISTOR 0603 1 4 7K 5 R59 SMT RESISTOR 0603 1 470K 5 R60 SMT RESISTOR 0603 1 22K 5 R61 SMT RESISTOR 0603 1 56K 5 R62 SMT RESISTOR 0603 1 33K 5 R63 R64 SMT RESISTOR 0805 2 56R 5 R65 SMT RESISTOR 0603 1 100R 5 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R66 SMT RESISTOR 0603 1 10K 5 R67 SMT RESISTOR 0603 1 39K 5 R68 SMT RESISTOR 0603 1 560R 5 R69 SMT RESISTOR 0603 1 10K 5 R70 RESISTOR DIP 1 100R 1W 5 R71 SMT RESISTOR 0603 1 OR 5 R72 SMT RESISTOR 0603 1 NO USE R73 SMT RESISTOR 0603 1 150R 5 R74 R75 SMT RESISTOR 0603 2 NO USE R77 SMT RESISTOR 0603 1 1 5K 5 R1000 R1016 SMT RESISTOR 0603 17 NO USE D1 D2 SMT ZENER DIODE 0805 2 5 6V D3 SMT LIGHTED DIODE 0603 1 ORANGE D4 SMT ZENER DIODE 0805 1 5 6V D5 LIGHTED DIODE DIP 1 BLUE AND ORANGE D6 SMT DIODE SC 70 1 155372 D7 SMT DIODE 0603 1 HSC277 D8 SMT LIGHTED DIODE 0603 1 ORANGE D9 100 SMT LIGHTED DIODE 0603 1 RED D10 D13 SMT DIODE SOT 323 4 DA221 D14 D16 100 SMT LIGHTED DIODE 0603 3 ORANGE D17 SMT LIGHTED DIODE 0603 1 ORANGE 081 LCD 1 LCD Q1 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE Q2 SMT DIGITAL TRANSISTOR EMT3 1 DTC114EE Q3 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE Q4 SMT DIGITAL TRANSISTOR EMT3 1 DTC114EE Q5 Q6 SMT TRANSISTOR SOT 23 2 2SC1623 DR138
39. T CAPACITOR 0603 1 471 10 50V C341 SMT CAPACITOR 0603 1 5P 0 1P 50V C342 C343 SMT CAPACITOR 0603 2 27P 5 50V C344 SMT CAPACITOR 0603 1 33P 5 50V C345 C346 SMT CAPACITOR 1210 2 27P 5 50V C347 SMT CAPACITOR 1210 1 36 5 50V C348 SMT CAPACITOR 0603 1 NO USE C349 C350 SMT CAPACITOR 1210 2 27P 5 50V C351 SMT CAPACITOR 0603 1 22P 5 50V C352 SMT CAPACITOR 0603 1 27P 5 50V C353 SMT CAPACITOR 0805 1 22P 5 50V C354 SMT CAPACITOR 0805 1 NO USE C355 C356 SMT CAPACITOR 0603 2 6P 0 1P 50V C357 SMT CAPACITOR 0603 1 33P 5 50V C358 SMT CAPACITOR 0603 1 12P 5 50V C359 SMT CAPACITOR 0603 1 39P 5 50V C360 SMT CAPACITOR 0603 1 9P 0 25P 50V C361 SMT CAPACITOR 1210 1 NO USE C362 SMT CAPACITOR 0603 1 10P 0 25P 50V C363 SMT CAPACITOR 1210 1 NO USE C364 C365 SMT CAPACITOR 0603 2 10P 5 50V C366 SMT CAPACITOR 0603 1 24P 5 50V C367 SMT CAPACITOR 0603 1 15P 5 50V C368 SMT CAPACITOR 0603 1 33P 5 50V DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C369 C370 SMT CAPACITOR 1210 2 NO USE C371 SMT CAPACITOR 0603 1 100 5 C372 C373 SMT CAPACITOR 0603 2 180 5 50V C374 SMT CAPACITOR 1206 1 100 5 50V C375 C377 SMT CAPACITOR 0603 3 100 5 C378 C379 SMT CAPACITOR 0603 2 33P 5 50V C380 SMT CAPACITOR 0603 1 680P 10 50V C381 SMT CAPACITOR 0805 1 474 10 50V C382 SMT CAPACITOR 1210 1 180P
40. TOR A type 1 22uF 20 10V E4 ELECTRO 4x8 1 22uF 10V E5 SMT TANTALUM CAPACITOR A type 1 22uF 20 10V E1000 E1003 SMT TANTALUM CAPACITOR A type 3 NO USE R1 SMT RESISTOR 0603 1 10K 5 R2 SMT RESISTOR 0603 1 22K 5 R3 R7 SMT RESISTOR 0603 4 1 5 R8 SMT RESISTOR 0603 1 10K 5 R9 R10 SMT RESISTOR 0603 2 1K 5 R11 SMT RESISTOR 0603 1 10K 5 R12 SMT RESISTOR 0603 1 1K 5 R13 SMT RESISTOR 0603 1 100R 5 R14 R16 SMT RESISTOR 0603 3 1K 5 R17 SMT RESISTOR 0603 1 33K 5 R18 R19 SMT RESISTOR 0603 2 10K 5 R20 SMT RESISTOR 0603 1 1K 5 R21 SMT RESISTOR 0603 1 47K 5 R22 SMT RESISTOR 0603 1 33K 5 DR138 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R23 R26 SMT RESISTOR 0603 4 10K 5 R27 SMT RESISTOR 0603 1 100K 5 R28 R34 SMT RESISTOR 0603 7 10K 5 R35 SMT CAPACITOR 0603 1 183 10 50V R36 SMT RESISTOR 0603 1 220 5 R37 R39 SMT RESISTOR 0603 3 47K 5 R40 SMT RESISTOR 0603 1 4 7K 5 R41 R43 SMT RESISTOR 0603 3 10K 5 R44 SMT RESISTOR 0603 1 1 2K 5 R45 SMT RESISTOR 0603 1 15K 5 R46 SMT RESISTOR 0603 1 100 590 R47 SMT RESISTOR 0603 1 12K 5 R49 SMT RESISTOR 0603 1 1 2K 5 R50 SMT RESISTOR 0603 1 180K 5 R51 SMT RESISTOR 0603 1 750R 5 R52 SMT RESISTOR 0603 1 560R 5 R53 SMT RESISTOR 0805 1 688596 R54 SMT RESISTOR 0603 1 100R 5 R55 SMT RESISTOR 0603 1 470R 5 R56 SMT RESISTOR 0603 1 4 7K 5 R57
41. VER3 X 3 1 47K 5 VR500 SMT VARIOUS RESISTOR VER3 X 3 1 47K 5 F100 SMT RESISTOR 1206 1 OR X200 SMT TCXO 1 19 200MHz XF200 XF201 Z 10 SMT CRYSTAL FILTER 2 38 5MHz 200 CRYSTAL 1 NO USE Y800 CRYSTAL 1 NO USE 1 20 10 31 DR138 SCHEMATIC DIAGRAM RIS
42. as an 128k bit EEPROM U6 The EEPROM contains adjustment data The CPU U2 controls the EEPROM through two serial data lines See Fig 11 U6 EEPROM Fig 11 APC Circuit m Display Circuit The CPU U2 controls the display LCD and LEDs When power is on the CPU will use the P07 line to control the LCD illumination backlight LEDs The brightness function is controlled by the switch Q6 and 07 The LCD driver U3 and CPU U2 communicate through the P85 P86 lines See Fig 12 DR138 CIRCUIT DESCRIPTION LCD driver SEGO SEG39 NN Q6 07 8C sw 1 05 Fig 12 Display circuit m Encode CTCSS DCS data of the P31 Line is output from pin 42 of the CPU The signal passes through a low pass CR filter and goes to the D A converter U505 High speed data 2T 5T DTMF is output from 58 of the CPU The signal passes through a low pass CR filter providing TX and SP output audio frequency and has processed IDC after amplified by a U504 B 4 The signal then passes through a low pass filter separation filter U504 C 4 and D 4 and filter the parts which are higher than 3kHz frequency and the signal attained goes into the D A converter U505 The D A converter U505 adjusts the balance between the MOD and CTCSS DCS levels Signal of CTCSS DCS port is summed with MOD and the resulting signal goes to the VCO This signal is applied to a varicap diode in the V
43. d Q206 the signal is filtered through a band pass filter L204 L205 and varactor diodes D205 D206 to eliminate unwanted signals before it is passed to the first mixer The voltage of these diodes are controlled by tracking the CPU U2 center frequency of the band pass filter See Fig 2 ANT CF201 wde MYER MCF 1 4 CF200 Narrow 0505 BPF 6206 BPF Q205 XF200 XF201 Q204 D ACONVERTER RF ANP ANT SW PER lt IF system WNO D210 D211 md D207 D208 2 BUFFER AMP 1204 1205 U501 44 X200 TCXO X2 MULTIPLY 0505 DA CPU 1st Local OSC PLL Fig 2 Receiver section configuration 3 DR138 CIRCUIT DESCRIPTION m First Mixer The signal from the amplifier is heterodyned with the first local oscillator signal from the PLL frequency synthesizer circuit the first mixer 0205 to create 38 850 2 first intermediate frequency 1st IF signal The first IF signal is then fed through one pair of monolithic crystal filter MCF XF200 201 to further remove spurious signals B IF amplifier The first IF signal is amplified by Q204 and then goes to U200 FM processing IC The signal is heterodyned again with a second local oscillator signal within U200 to create a 450kHz second IF signal The second IF signal is then fe
44. d makes the TXC signal low When the TXC signal goes low no voltage is applied to 8T and no signal is transmitted See Fig 7 8C Q101 8R sw 0108 0104 sw sw U2 LD U205 lt CPU PLL PLL lock LD H Fig 7 Unlock circuit 0102 sw gT Transmitter m Outline The transmitter circuit produces and amplifies the desired frequency directly It FM modulates the carrier signal by means of a varicap diode m Power Amplifier Circuit The transmit output signal from the VCO passes through the transmission reception selection diode D203 and amplified by Q220 Q212 and Q214 The amplified signal goes to the final amplifier Q216 through a low pass filter The low pass filter removes unwanted high frequency harmonic components and the resulting signal is transmitted through the antenna terminal See Fig 8 MIC 0505 0504 9500 U504 U504 AMP DA BUFFER MC33111 NJM2902 34 1 4 25346 gt FILTER NJM2902 COMPANDER MICIDC Im U505 0218 Qp09 207 220 0212 214 216 DA vco BUFFER 020 RFAMP DRIVE STAGE DRIVE FINALAMP 1 CONVERTER 2SK4875 2504226 2904226 2503357 288078 RD07 RFM70U12 0505 U205 210 PLL
45. d through a 450kHz ceramic filter Wide CF201 Narrow CF200 to further eliminate unwanted signals before it is amplified and FM detected in U200 m Wide Narrow Switching Circuit The Wide port and Narrow port pin 75 of the CPU is used to switch between ceramic filters When the Wide port is high the ceramic filter SW diodes D200 D201 cause CF201 to turn on to receive a Wide signal When the Narrow port is low the ceramic filter SW diodes D200 D201 cause CF200 to turn on to receive a Narrow signal See Fig 3 U200 IF SYSTEM IF IN MIX O R207 CF200 NARROW Q203 R205 sw 201 02 75pin WIDE Q201 WIDE NARROW SW D201 D200 R206 e sw R208 Fig 3 Wide Narrow Switching Circuit m AF Signal System The detection signal from IF IC U200 goes to D A converter U505 for adjusting the gain and is output to AF filter 0502 for characterizing the signal It is also amplified by entering compander amplifier 0500 The AF signal output from U500 and the TONE signal are summed up and the resulting signal goes to the D A converter U505 The AFO output level is adjusted by the D A converter The signal output from the D A converter is input to the audio power amplifier U506 The AF signal from U505 was inputted into 0506 signal 0506 switche
46. he VCO to control the oscillator frequency See Fig 6 VCO The operating frequency is generated by Q218 in transmit mode and Q217 in receive mode The oscillator frequency is controlled by applying the VCO control voltage obtained from the phase comparator to the varactor diodes D219 and D222 in transmit mode and D217 and D220 in receive mode The TX RX pin is set high in receive mode causing Q202 and Q219 to turn Q218 off and turn Q217 on The TX RX pin is set low in transmit mode The outputs from Q217 and Q218 are amplified by Q209 and sent to the RF amplifiers See Fig 6 U20 amp PLLIC 0218 TXVCO gt 4 LPF BUFFAMP PLLDATA 02190222 H RF 5 Q217 RXVCO Q201 0219 SW D217 D20 P45 CPU 19 200MHz Fig 6 PLL circuit m UNLOCK Circuit During reception the RXC signal goes high the TXC signal goes low and Q108 turns on Q101 turns on and a voltage is applied to 8R During transmission the RXC signal goes low the TXC signal goes DR138 CIRCUIT DESCRIPTION high and Q104 turns on Q102 turns on and a voltage is applied to 8T The CPU in the control unit monitors the PLL U205 LD signal directly When the PLL is unlocked during transmission the PLL LD signal goes low The CPU detects this signal an
47. hich is connected to CPU port 45 POWER goes low then CPU port 23 P20 goes high Q103 turns on SBE SW Q100 turns on and power SBE is supplied to the radio During receiving the CPU port 19 P24 output H level Q101 and Q108 turn on and reception circuit is supplied by 8V power supply 8R When the receiving is at FM the CUP port 16 P27 output L level Q106 turns on and supplies 8V power supply to FM reception circuit During transmitting CPU port 18 P25 output H level Q102 and Q104 turn on Transmitting circuit output 8V power supply 8T See Fig 15 1 0101 0100 Q100 56 25 AVR 4 AR w Y 0107 0106 0101 0102 VAM LC LV 8 aw 1 1 8R 0103 sw 0105 0108 0104 T Sw Sw SW PS sj a P24 P20 2 P27 CPU POWER 5M ER SW Fig 15 Power supply circuit P PARTS LIST DR138 DISPLAY UNIT Ref No Parts No Description of item Size LxW mm Qty Specification C1 C2 SMT CAPACITOR 0603 2 104 10 0603 1 102 10 4 0603 1 104 10 5 0603 1 102 10 C6 SMT CAPACITOR 0603 1 104 10 C7 C20 SMT CAPACITOR 0603
48. s between the internal speaker and speaker jack J502 output See Fig 4 U200 U505 U501 U502 U500 U505 U506 D A D A IF IC CONV AF Filter COMPANDE CONV AF PA SP Fig 4 AF signal system DR138 CIRCUIT DESCRIPTION m Squelch Circuit The detection output from the FM IF IC U200 passes through a noise amplifier U202 B 2 to detect noise A voltage is applied to the CPU U2 The CPU controls squelch according to the voltage SQIN level The signal from the RSSI pin of U200 is used for S meter The electric field strength of the receive signal can be known before the SQIN voltage is input to the CPU and the scan stop speed is improved U200 NOISE AMP U2 U202 SQ gt SQIN IF CPU SYSTEM RSSI RSSI Fig 5 Squelch Circuit PLL frequency synthesizer The circuit generates the first local oscillator signal for reception and the RF signal for transmission B PLL The frequency step of the PLL circuit is 5 or 6 25kHz A 19 200MHz reference oscillator signal is divided at U205 by a fixed counter to produce the 5 or 6 25kHz reference frequency The voltage controlled oscillator VCO output signal is buffer amplified by Q210 then divided in U205 by a dualmodule programmable counter The divided signal is compared in phase with the 5 or 6 25kHz reference signal in the phase comparator in U205 The output signal from the phase comparator is filtered through a low pass filter and passed to t

DR138 - Maas Elektronik

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