Dumont-ra-103-sams-90-3电路原理图.pdf

PHOTOFACT* FolJer DUMONT MODEL RA1O3 (Ch. 7O4OA1, 7O4OA2) AM TUNING CONTROL CONTRAST ON-OFF SW TONE CONTROL BRIGHTNESS FOCUS DUMONT MODEL RA103 Savoy TRADE NAME Dumont Model RA103 Chatham 3VAC 6.3VAC OV. OV. OV. OV. -2VDC 6.3VAC 6.3VAC 6 . 3VAC OV. -.6VDC 215VDC -25VDC -2.1VDC -3.3VDC OV. 8.3VAC - . 6VDC 180VDC -1.9VDC 410VDC Pin 5 OV. 150VDC OV. 120VDC 105VDC 110VDC -2VDC OV. 260VDC 260VDC - . 1VDC OV. OV. -8.3VDC 50VDC OV. 65VDC 360VDC 1.8VDC OV. -30VDC -1.9VDC 410VDC Pin 6 OV. 50VDC S-7.6VDC 120VDC 105VDC 110VDC OV. 150VDC 150VDC 40VDC OV. OV. 50VDC -10VDC OV. 50VDC OV. 10VDC 17VDC OV. 75VDC 260VDC 410VDC Pin 7 2 . 1VDC OV. OV. .evDc .6VDC .9VDC -.1VDC OV. .8VDC .1VDC -.4VDC OV. 8.3VAC OV. OV. 6.3VAC OV. 6.3VAC -.6VDC 6.3VAC 6.3VAC 6.3VAC 410VDC ! 370VDC Pin 8 140VDC 1.1 VDC 180VDC OV. 6.3VAC 250VDC 6.3VAC OV. 225VDC .4VDC .250 VDC 490VDC Pin 9 TOP CAP DO NOT MEASURE 40VDC -2.3VDC OV. OV. -.6VDC S-2.9VDC -.7VDC OV. OV. OV. -12.5VDC 430VDC 430VDC 1.1VDC OV. OV. OV. -.7VDC OV. 290VDC .2VAC OV. OV. PIN 10 215VDC OV. OV. OV. OV. 225VDC 55VAC 6.3VAC 400VAC 400VAC PIN 11 87VDC 6.3VAC 8.3VAC 6.3VAC -.6VDC 220VDC 300VAC 40VDC -12.5VDC OV. PIN 12 6.3VAC 230VDC 230VDC 225VDC -.6VDC OV. 55VAC OV. 400VAC 400VAC 93VDC 93VDC 93VDC 107VDC OV. 300VAC -12.5VDC 410VDC OV. OV. -.7VDC OV. 6.3VAC 6.3VAC OV. 430VDC 430VDC OV. 9VDC 290VDC E TAKEN WITH VACUUM TUBE VOLTMETER. MEASURED FROM JUNCTION OF C5 Measured val mon negative AC Voltage e counted in es are from unless other ts are at 20,000 measured at 1,000 a clockwise direc- socket pin to corn- wise stated. 4. Line 5, Fron setti and voltage mai panels con g of the sen maximum r lained at 117 volts f rols set at minimum. /ice controls, both m admgs are given. srvolr. RadioFans.CN v O AW CONVERTER AM IF AMP DET. AVC-AFAMR POWER OUTPUT 6V66L TO TV AUDIO OUTPUT RADIO SCHEMATIC 90-3 RadioFans.CN u g p o DD (f) (f) U RadioFans.CN O D O Pi N O O Z * -I O J* O K PACITOR IDENTIFICATION PAGE 11 RadioFans.CN ia-M3iA nonoa SISSVHO lOVdRadioFans.CN I 0 g O W /x Pi N O o z 3 I to -ISISTOR IDENTIFICATION PAGE 21 RadioFans.CN INDUCTUNER RF TUNER-BOTTOM VIEW PAGE 13 RadioFans.CN V33 L39 A21 138 V30 RADIO CHASSIS-TOP VIEW RADIO CHASSIS-BOTTOM VIEW PAGE 14 RadioFans.CN TV PARTS LIST AND DESCRIPTIONS TUBES (SYLVANIA or Equivalent) ITEM No. VI V2 V3 V4 V5 V6 V7 V8 V9 V10 Vll V12 V13A B V14 V15 V16A B V17 V18 V19 V20 V21 V22 V23 V24 V25 V26 V27 V28 USE RF Amp. Mixer Oscillator 1st Video IF 2nd Video IF 3rd Video IF Video Del. - DC Restorer Video Amp. Sound IF Amp. Limiter Disc. Tuning Ind. AF Amp. AF Amp. Audio Output 1st Sync. Clipper -Hor. Disch. 2nd Sync. Clipper 2nd Sync. Clipper Vert. Buffer- Osc. - Disch. Vert. Amp. Hor. Sync. Disc. Hor. AFC Hor. Osc. Hor. Output Damper HV Rectifier Time Delay Reel. LV Rectifier LV Rectifier Picture Tube REPLACEMENT DATA DUMONT PART No. 6J6 6AK5 6J6 6AG5 6AG5 GAGS 6AL5 6AC7 6AU6 6AU6 6AL5 6AL7GT 6SJ7GT 6SJ7 6V6GT 6SN7GT 6SJ7 6SJ7GT 6SN7GT 6SN7GT 6AL5 6 AC 7 6K6GT 6BG6G 5V4G 1B3GT 6AL5 5U4G 5U4G 12JP4 STANDARD REPLACEMENT 6J6 6AK5 6J6 6AG5 6AG5 6AG5 8AL5 6AC7 6AU6 6AU6 6AL5 6AL7GT 6SJ7GT 6SJ7 6V6GT 6SN7GT 6SJ7 6SJ7GT 6SN7GT 6SN7GT 6AL.5 6AC7 6K6GT 6BG6G 5V4G 1B3GT 6AL5 5U4G 5U4G 12JP4 RMA BASE TYPE 7BF 7BD 7BF 7BD 7BD 7BD 6BT 8N 7BK 7BK 6BT 8CH 8N 8N 7AC 8BD 8N 8N 8BD 8BD 6BT 8N 7S 5BT 5L 3C 6BT 5T 5T 12D NOTES CAPACITORS Capacity values given in the rating column are in mfd. for Electrolytic and Paper Capacitors, and in mmfd. for Mica and Ceramic Capacitors. ITEM No. Cl C2 C3A B C4 C5 C6 C7A B C8A B C D C9 CIO Cll C12 C13 C14 CIS C16 C17 CIS C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 CSS C54 C55 C56 RATING CAP. 80 80 40 40 100 500 4 30 10 10 10 10 10 1.5 S! A60i 25 470 470 470 470 15 3-12 3-12 15 470 470 1 5 2-12 470 470 1000 1000 6800 .25 6800 1000 6800 5000 6800 20 1000 10 6800 6800 1000 1000 47 .05 .5 270 .1 .01 2.5 1000 2.5 4700 1000 .1 47 1000 1000 VOLT 350 350 450 450 25 25 150 450 450 350 350 300 300 4 50 200 400 400 200 600 500 200 REPLACEMENT DATA DUMONT PART No. 3-1408 3-1408 3-1413 3-1409 3-1287 3-1367 3-1411 3-1412 3-1225 3-1389 CM20C471K CM20C471K CM20C471K CM20C471K 3-1205 3-307 3-307 3-1205 CM20C471K CM20C471K 3-1215 3-1323 3-307 CM20C471K CM20C471K 3-1394 3-1394 3-1392 3-42 3-1394 3-1392 3-1392 3-1401 3-1394 3-1308 3-1392 3-1392 3-1394 3-1394 3-1273 3-1402 3-1426 3-1427 3-1391 3-1256 3-1457 3-1394 3-1428 3-1394 3-1394 3-1391 3-1420 3-1394 3-1394 AEROVOX PART No. AFH16H AFH16H AF88J PRS50/100 PRS25/500 PRS150/4 AF66J AF2222J PRS6/1000 PRS50/25 GP470M GP470M GP470M GP470M GP15K GP15K GP470M GP470M CI5CN030 GP470M GP470M GP1000M GP1000M GP6800M P288-25 GP6800M GP1000M GP6800M BPD-5 GP6800M CI20JNPO GP1000M CI10JNPO GP6800M GP6800M GP1000M GP1000M CN47JNPO P488-05 484-5 GP270M P288-1 P688-01 CN2. 5CNPO GP1000M CN2. 5CNPO 1467-005 GP1000M P288-1 GP47M GP1000M GP1000M CORNELL- DUBILIER PART No. UP8AJ242 UP8AJ242 UP4445 BRH251A BRH255A BR415 UP7BJ912 UP111145 BRH620 BR255 1W5D1 PTE6D6 GT2P25 PTE6D6 1W5D1 PTE6D6 1D5D5 PTE6D6 5R5Q2 1W5D1 5R5Q1 PTE6D6 PTE6D6 1W5D1 1W5D1 5R5Q5 PTE4S5 GT4P5 5W5T25 PTE4P1 PTE6S1 1W5D1 1D5D5 1W5D1 PTE2P1 5W5Q5 1W5D1 1W5D1 ERIE PART No. GP2K-470 GP2K-470 GP2K-470 GP2K-470 GP1K-15 557-NPO-3-12 557-NPO-3-12 GP1K-15 GP2K-470 GP2K-470 N030K-5 TS2A-N500-2- 12 GP2K-470 GP2K-470 GP2L-001 GP2L-001 GP2-334-0068 GP2-334-0068 GP2L-001 GP2-334-0068 811-005 GP2-334-0068 NPOK-20 GP2L-001 NPOK-10 GP2-334-0068 GP2-334-0068 GP2L-001 GP2L-001 NPOM-50 GP2K-270 821-01 NPOK-2.5 GP2L-001 NPOK-2.5 8H-005 GP2L-001 GP1K-47 GP2L-001 GP2L-001 SPRAGUE PART No. TVL-5 TVL-5 TVL-64 TVA-8 TVA-10 UT-41 TVL-69 TVL-34 TVA-2 TVA-15 1FM-21 TM-26 TC-2 TM-26 1FM-21 TM-26 29C1 TM-26 MS -42 1FM-21 MS -41 TM-26 TM-26 IFM-21 IFM-21 MS-45 rM-15 re -5 1FM-325 FM-1 nn-ii IFM-21 1FM-25 IFM-21 TM-1 1FM-45 IFM-21 IFM-21 IDENTIFICATION CODES AND INSTALLATION NOTES Filter Filter . Filter i Filter Hor. Cent. Cont. Bypass Bias Filter Filter Decoupling i Output Decoupling V. Amp. Screen Bypass Low Pass Filter A Sync. Clipper Decoupling Decoupling Vert. Cent. Cont. Bypass Vert. Output Cath. Bypass RF Coupling Mixer Grid Filter RF Filament Bypass RF Bypass RF Coupling Fixed Trimmer Fixed Trimmer RF Coupling Mixer Screen Bypass Mixer Filament Bypass Osc. Coupling Osc. Grid Cap. Fixed Trimmer Osc. Filament Bypass RF Bypass Mixer Plate Decoupling IF Coupling Bias Filter Bias Filter 1st V. IF Decoupling IF Coupling * Bias Filter 2nd V. IF Cath. Bypass t 2nd V. IF Decoupling Fixed Trimmer RF Cou pling Fixed Trimmer 3rd V. IF Cath. Bypass 3rd V. IF Decoupling IF Coupling * Bias Filter Fixed Trimmer Video Coupling Video Coupling DC Res. Plate Bypass Pic. Tube Cath. Dec. Ace. Anode Bypass S. IF Coupling AVC Filter Fixed Trimmer 1st S. IF Screen Bypass 1st S. IF Decoupling AVC Filter Limiter Grid Filter Limiter Screen Bypass Limiter Decoupling PAGE 15 RadioFans.CN TV PARTS LIST AND CAPACITORS CCONT.J RESIST ITEM No. C57 CSS C59 C60 C61 C62 C63 CM C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C7B C79 C80 C81 C82 CBS C84 C85 CB6 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 RATING CAP. 47 47 1000 .01 .01 .02 .1 .1 .05 5000 470 .005 .01 .05 .1 .01 .005 .01 .01 .1 .1 47 .01 .005 .1 .05 .005 10000 .005 .05 330 .01 680 1000 .05 .1 1000 .035 .05 220 500 1000 .1 6800 .05 .05 3-12 VOLT 400 400 400 200 400 400 600 400 200 200 600 600 400 400 400 400 400 600 200 200 600 300 600 400 500 400 500 500 400 200 1000 1000 1500 10000 400 600 600 REPLACEMENT DATA DDMONT PART No. 3-1420 3-1420 3-1394 3-145 3-145 3-146 3-1391 3-1404 3-1402 3-1292 3-157 3-145 3-95 3-1391 3-1256 3-157 3-145 3-145 3-1404 3-1404 3-1395 3-341 3-157 3-1391 3-95 3-157 CM35A103K 3-157 3-1402 CM20A331K 3-145 CM30A68IK CM30A102K 3-1402 3-1391 3-1394 3-1406 3-1407 3-1474 3-1183 3-1394 3-1404 3-1392 3-1405 3-1405 3-307 AEROVOX PART No. GP47M GP47M GP1000M P488-01 P488-01 P488-02 P288-1 P488-1 P488-05 BPD-5 GP470M P688-005 P488-01 P288-05 P288-1 P688-01 P688-005 P488-01 P488-01 P488-1 P488-1 CN47JNPO P488-01 P688-005 P288-1 P288-05 P68B.-005 1467-01 P688-005 P488-05 1468-00035 P488-01 1467-001 P488-05 P288-1 GP1000M P1088-033 P1088-05 GP1000M P488-1 GP6800M P688-05 P688-05 CORNELL- DUBIUER PART No. 5W5Q5 5W5Q5 1W5D1 PTE4S1 PTE4S1 PTE4S2 PTE4P1 PTE4P1 PTE4S5 1D5D5 5W5T5 PTE6D5 PTE4S1 PTE4S5 PTE4P1 PTE6S1 PTE6D5 PTE4S1 PTE4S1 PTE4P1 PTE4P1 5R5Q5 PTE4S1 PTE6D5 PTE4P1 PTE4S5 PTE6D5 1D3S1 PTE6D5 PTE4S5 5W5T3 PTE4S1 1W5T7 1W5D1 PTE4S5 PTE4P1 1W5D1 GT16S5 1W5D1 PTE4P1 PTE6D6 PTE6S5 PTE6S5 ERIE PART No. GP1K-47 GP1K-47 GP2L-001 821-01 821-01 811-005 GP2K-470 811-005 821-01 821-01 811-005 821-01 821-01 NPOM-50 821-01 811-005 811-005 811-005 GP2K-330 821-01 GP2K-680 GP2L-001 GP2L-001 410-500 GP2L-001 GP2-334-0068 557-NPO-3-12 SPRAGUE PART No. 1FM-45 1FM-45 1FM-21 TM-11 TM-11 TM-12 TM-1 TM-1 TM-15 29C1 1FM-35 TM-25 TM-11 TM-15 TM-1 TM-11 TM-25 TM-11 TM-11 TM-1 TM-1 MS-45 TM-11 TM-25 TM-1 TM-15 TM-25 1FM-11 TM-25 TM-15 1FM-335 TM-11 1FM-37 1FM-21 TM-15 TM-1 1FM-21 TR-15 1FM-21 TM-1 TM-26 TM-15 TM-15 IDENTIFICATION CODES AND INSTALLATION NOTES HF Bypass RF Bypass De-emphasis Tuning Ind. Filter Tone Compensation Audio Coupling Bias Filter 1st AF Screen Bypass Audio Coupling RF Bypass t Output Grid Bypass t t Output Plate Bypass Sync. Coupling Sync. Coupling 2nd Sync. Clip. Screen Bypass Vert. Sync. Coupling Integrator Net. Integrator Net. Vert. Osc. Grid Cap. Vert. Discharge Vert. Sweep Coupling Hor. Sync. Coupling Fixed Trimmer AFC Filter AFC Filter Hor. AFC Screen Bypass Hor. AFC Coupling Phase Shifter Hor. Osc. Grid Cap. Hor. Osc. Screen Bypass Differentiator Net. Hor. Sweep Coupling Hor. Discharge Hor. Sweep Coupling Hor. Output Screen Bypass Hor. Output Cath. Bypass Bias Filter Damper Filter Damper Filter Fixed Trimmer HV Filter RF Bypass RF Bypass RF Bypass Line Filter Line Filter Fixed Trimmer * Some models use transmission line in this application. f Not used in all models. t Chassis type 7040-A1 uses . 002MFD, 600 volt in this application. 5 Some models use 1000MMF in this application. CONTROLS ITEM No. B1A B R2 B3 R4 R5 R6 R7 R8 R9 RIO Rll RATING RESIST- ANCE 500K! Switch 100K! 25K! iooon 25S1 zsn isoon . 2 Meg. 500K!i 20K!1 500K! WATTS 2 Z 2 25 2 4 2 2 2 A A 2 REPLACEMENT DATA DUMONT PART No. -691 or -692 -553 or -498 -696 or -700 -668 or -689 -663 -666 -681 or -664 or -682 -662 or -672 -661 or -671 -665 or -670 -660 or -671 IRC PART No. Q13-133X 76-1 Qll-128 Qll-120 PR-25-1000 W-25 W-2000 Qll-139 Qll-133 Qll-119 Qll-133 CLAROSTAT PART No. T-78 SW-A M-49-S M-40-S PW-25-1000 43-25 43-1500 M-83-S M-58-S M-36-S M-58-S INSTALLATION NOTES Volume control, tapped at 150K! Attach to R1A per instructions Brightness control Contrast control Focus control-Wire Wound Vert, centering control-Wire Wound Horiz. centering control-Wire Wound Vert, linearity control -Wire Wound Height control Vert, hold control Horiz. drive control Sensitivity control RESISTORS ITEM No. R12 R13 R14 R15 R16 R17 RIB R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 H32 RATING RESISTANCE 200! 5% 100K! 10K!1 12K!J 12K!1 IMeg. 47! 330K!1 12K!1 10KP. 8200! 5% 47KO 560012 5% 68! 6800! 5% 22K!i 22KP- 10K! 6800! 5% 68! 3900! WATTS i 2 2 A 2 i 2 l z I 2 2 i 2 1| 2 REPLACEMENT DATA DUMONT PART No. 2-957 2-943 2-956 2-958 2-1208 RC20BF470K 2-1202 2-956 2-943 RC20BF822J RC20BF473K RC20BF562J RC20BF680K RC20BF682J RC40BF223K RC40BF223K RC20BF223K RC20BF682J RC20BF680K RC40BF392K IRC PART No. BTS-47K BTS-6800-5% BT-2-22K BT-2-22K BTS-10K BTS-6800-5% BT-2-3900 IDENTIFICATION CODES ALL RESISTORS ARE t 10% UNLESS OTHERWISE STATED. RF Cathode Mixer Grid RF Plate RF Plate Coil Shunt Mixer Grid Coil Shunt Mixer Grid Mixer Cathode-See Note 2 Mixer Screen Osc. Grid Osc. Plate Mixer Plate Transformer Shunt Mixer Plate Decoupling 1st Video IF Grid 1st Video IF Cathode 1st Video IF Plate Coil Shunt-See Note 1 1st Video IF Decoupling 1st Video IF Decoupling Bias Network 2nd Video IF Grid Coil Shunt 2nd Video IF Cathode 2nd Video IF Decoupling ITEM No. R33 R34 H35 R36A B C H37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 H50 R51 R52 R53 R54 R55 R56 R57 R58 R59 H60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R89 R90 R91 R92 R93 R94 R95 R96 R97 R98 R99 R100 R101 R102 R103 R104 R105 R106 R107 R108 R109 H110 Rill R112 R113 R114 R115 R116 H117 R118 R119 R120 R121 R122 R123 R124A B R125 R126 R127 R128 R129 RATING RESISTANCE 39000 5% won 3900SJ 2500! 7000S! 62! 120! 39KS2 5% 4700S! 15SJ 22JJ 100KSJ 100KS1 3600! 5% 3300SJ 10KS2 150KH 470K!1 IMeg. 20% 68! 100KS! 33KS! 1000! lOOKf! 56K! 68 f! 47KS! 10000 10KS1 100KIJ 100KJ! 27KS1 3300S1 22K! 470K! IMeg. 100KSJ 470KSJ 100K! 100K!1 2200! 22000 220K1 470KH 8200! 8200! 39KS! 3300SJ 33K!J 6800S! 1.2 Meg. 10K!1 100KI! 22K!J 1.2 Meg. 6800! 10K!1 10K!1 10K!J 750K!1 5% 470K! 12K!1 3300! 2. 2 Meg. 4700S! 820! 10KSJ 10K!1 330! 470K! 470K! 470K!1 470! ion 22K!1 47KI! 27K! 47K! 5000!J 5% 10KS! 68001! 220KI! 680K1! 10K!1 100! 470KS1 ioon 27KJ! 22K! 6000! 5% 3.6! 220KO 2.2! 200! 250! 1280! 100K!1 100K! 1800! IMeg. WATTS 2 1 2 10 7 2 2 A 2 A 1 2 JL 2 2 2 2 i 2 2 A J 1 2 J. a 2 iz 1 2 I | i 2 I J. 2 i 2 2 A I 2 2 4 I 2 A 1 ? A I 2 1 I i _L i 2 2 1 t A 2 i 2 2 1 2 10 1 | 1 2 I 2 5 2 2 25 2 1 1 11.5 7.7 . 24.1 1 1 1 2 2 REPLACEMENT DATA DUMONT PART No. RC20BF392J RC20BF101K RC40BF392K 2-1759 RC40BF121K RC20BF393K RC20BF472K RC20BF150K RC20BF220K RC40BF104K RC40BF104K RC40BF362J RC40BF332K RC20BF103K RC20BF154K RC20BF474K RC20BF105M RC20BF680K RC20BF104K RC30BF333K RC20BF102K RC20BF104K RC20BF563K RC20BF680K RC40BF473 RC20BF102K RC20BF103K RC20BF104K RC20BF104K RC20BF273K HC20BF332K RC20BF223K RC20BF474K RC20BF105K RC20BF104K RC20BF474K RC20BF104K RC20BF104K RC40BF222K RC40BF222K RC20BF224K RC20BF474K RC40BF822K RC40BF822K RC20BF393K RC20BF332K RC40BF333K RC20BF682K RC20BF125K RC20BF103K RC30BF104K RC20BF223K RC20BF125K RC20BF682K RC20BF103K RC20BF103K RC20BF103K RC20BF474K RC20BF123K RC20BF332K RC20BF225K RC20BF472K RC30BF821K RC40BF103K RC40BF103K RC30BF331K RC20BF474K RC20BF474K RC20BF474K RC20BF471K RC20BF100K RC40BF223K RC40BF473K RC30BF273K RC20BF473K 2-192 or 2-932 RC30BF103K RC20BF682K RC20BF224K RC20BF684K RC20BF103K RC20BF101K RC20BF474K 2-944 or 2-962 RC40BF273K RC40BF223K 2-1777 2-1754 2-1760 2-1761 RC30BF104K RC30BF104K RC20BF182K RC20BF105K IRC PART N BT-2-390 BW-1-120 BTS-39K- BTS-4700 BW-i-15 BW-3-22 BT-2-1001 BT-2-1001 BT-2-330 BTS-10K BTS-150K BTS-470K BTS-1 Me BTS-100K BTS-1000 BTS-100K BTS-56K BTS-1000 BTS-10K BTS-100K BTS-100K BTS-27K BTS-3300 BTS-22K BTS-470K BTS-1 Me BTS-100K BTS-470K BTS-100I BTS-100F BT-2-221 BT-2-221 BTS-2201 BTS-4701 BT-2-82C BT-2-821 BTS-39K BTS-330C BT-2-33J BTS-680C BTS-1. 2 BTS-10K BTA-100? BTS-22K BTS-1. 2 BTS.680C BTS-10K BTS-10K BTS-10K BTS-470F BTS-12K BTS-330C BTS-2.2 BTS-4700 BTA-820 BT-2-10K BT-2-10K BTA-330 BTS-470K BTS-470K BTS-470K BTS-470 BT-2-22K B