Gates BC-1T Instructions For Installing And Operating Download Page 1

Page: 1 / 57

www.SteamPoweredRadio.Com

Summary of Contents for BC-1T

Page 1: ...www SteamPoweredRadio Com...

Page 2: ...r easy r nov J of each oscil tor for ser icin if n ceesary A11 fr quency control relays a e ener izPd by th_ two S t s of cont lct s which Art a pa rt of he latchinf r lay Kl6 Thii late L relay L loca...

Page 3: ...ked P A Tune This control 11 s th P A coil to be tuned to r sonance at P50 KC th re 1lar operating frequ ncy Rel y Kll is locat d in a row of relays t the very ton of Uie cabinet and is available for...

Page 4: ...t is pos itle by means of the s ries n ductor Ll6 the knob of which js loc ted at the v ry top of 1e ca btnet nenr th door top Rel y Kl0 i de energi zed This opens the variable coll r c i t circuit a...

Page 5: ...n ha3 b en lo ted Q 2 a n_ __ __ ____ _________ J 1 i r ur 11 YCtltag ar of f c ir r 111 y revlace tht rect l 1 ci t H t hr ct b en pr V Lously rernovP d Agaih s t r t uo the tro n l t r h po er am_li...

Page 6: ...P A Padder for Conelrad frequency has been removed for shipment It will be necessary to remove the Fan Assembly in the top of the trans mitter to install this capacitor This transmitter is equipped w...

Page 7: ...ets of the transmitter At this point more c ar e is required as the two filament prongs are also the me ans for securing the tubes in the transmitter l iake sure the connections have some give so that...

Page 8: ...www SteamPoweredRadio Com I L BC IT BC500T BC250T A M TRANSMITTERS...

Page 9: ...R 3 MODULATOR BIAS ADJUSTING 3 6 NEUTRALIZING 3 5 6 PARTS LIST 10 11 PLATE RHEOSTAT 7 POWER AMPLIFIER AND TUNING 3 6 POWER SUPPLIES HIGH VOLTAGE 4 INTERMEDIATE 4 MODULATOR BIAS 4 PRIMARY LINE Z PROTEC...

Page 10: ...5 Audio input 12 db f 2 db for 100 modulation The output of a Gates SA 39B limiter should be correct for this If other limiter or audio amplifier used be sure and check output capabilities 6 Input aud...

Page 11: ...e cabinet for shipping safety Remove this support All relays inspected for free travel of armatures and contacts Heavy components such as the power and modulation transformers and filter reactors are...

Page 12: ...g of the relay As factory adjusted trippilng point is at 700 MA or about 20 over normal opera ting current of the power amplifier Relay K6 actually controls master overload relay K3 which when open di...

Page 13: ...c The 230 volt primary is connected to fuse block XF 1 Entrance of this cable is best at the right rear bottom d Audio input be sure to use shielded wire is connected to 29 and 30 on terminal strip T...

Page 14: ...Again by consulting Drawing 30604 we find the proper size capacitor for your frequency Using 1400 Kc as our example we find P A tank p adder cap a citor C 11 and C 12 2 Type G2 00025 mfd Input loading...

Page 15: ...A is drawn by the power amplifier Now replace the perforated screen Turn on transmitter by pressing the fila ment start switch Leave time for the time delay relays to operate Check to be sure you have...

Page 16: ...ning will prevent the engineer from being called away from an afternoon s fishing jaunt later on and most important advertising revenues will not be lost AIR FILTERS must be replaced regularly If not...

Page 17: ...overload relay Clip out the portion between K6 and K7 K7 is to retain its direct chassis ground since we want only P A current to flow through the plate current kit 3 Both K6 and K7 must retain their...

Page 18: ...ermediate Plate Supply Output of Supply measured at L5 terminal 2 600 650V DC High Voltage Plate Supply Output of Supply measured at top end of Bleeder Rl0 2600V DC NOTE Voltages and currents are appr...

Page 19: ...e Symbol No Drawing No L9 Ll0 Lll L 12 L 13 L 14 L 15 M6 A 30910 10 l 105 VB 3735F 26 FB 2843F 30 VB 2344F A 10391 102 R 15 R 16 R 15A Rl5B Rl6A Rl6B TB2 TB 3 Description P A Plate Choke Det by Freq P...

Page 20: ...trol 1000 ohm Res 82K ohm 2W 10 Res 120K ohm 2W 10 Res l00K ohm 2W 10 Res 470K ohm 2W 10 Res l0K ohm 2W 10 Res l0K ohm l0W Res 47K ohm 2W 10 Res 20 ohm lW 5 Res 8200 ohm 2W 10 Res 47 ohm 2W 10 Part of...

Page 21: ...he option of G tes Radio Comoany either to demonstrate the operation of the eouioment in conformance with its warranty er to replace Page 12 it with equipment conforming to its warranty or to accept i...

Page 22: ...More tuning capacity C9 or more turns of the slug in 13 may be required for resonanceo Shorter lengths of monitor cable on frequencies from 600 KC to 540 KC may prevent the unit from tuning to resona...

Page 23: ...e possible to tune crystals from 540 KC to 800 KC to their 2nd harmonic After resonance has been obtained the crystal may be set to exact frequency by using the frequency monitor Set the slots of the...

Page 24: ...uce low efficiency unless it is tuned up incorrectly If you have low efficiency your first check should be into an approved dummy antenna Light bulbs or dummy antennas of unknown resistance under powe...

Page 25: ...of all transmitters Enough will cause arc overs that will blow fuses Look for cable abrasions 15 It is also important to note that if you have had a fuse blowing ordeal that after locating the cause t...

Page 26: ...s too small and voltage varies at input under modulation Often hard to find as public utility meters and graphs are slow speed Best check is to apply sine wave to transmitter Check line voltage at zer...

Page 27: ...d duct hot air out of closed transmitter buildings Check tubes at least monthly Poor tubes mean poor quality and eventual outage Rotate the bigger tubes every month Include spares in this rotation bot...

Page 28: ...www SteamPoweredRadio Com t t i 0 N J 11 l 1 r p i 1 i t I i tt I t Lll di t i ri 1 h1 n r r i t 0 Jj 1 IT ij n 7 ij I J C 1 J l tr r 11 i i cr J l It 0 0 It It 0 O 0 rt I...

Page 29: ...L loll I I 11 I J 1 I I j I I j i I I 1 I I I j I I J J J I J I I 1 I I I I r C lj If _ I 0 I I j I j I I j I I i II I rll t I 0 I I I 0 u HI II I II I _ I _ II II _ I I Ill _ I L J 1 loll _ 1 W HION...

Page 30: ...www SteamPoweredRadio Com BACK VIEW PANEL a SHELF ASSEMBLY BC IT BC500T BC250T A M TRANSMITTERS...

Page 31: ...www SteamPoweredRadio Com C23 C24 R2 SI LS R2 VI lNSIOE VIEW BC IT 1000 W A M TRANS M5393...

Page 32: ...www SteamPoweredRadio Com R2 RI SI R6 S2 LS R2 Cl7 V3 V4 L7 T6 V2 VI V5 C5 C6 K4 K3 K2 Kl INSIDE CABINET VIEW BC IT BC 500T BC250T A M TRANSMITTERS t J 0 E...

Page 33: ...www SteamPoweredRadio Com SI S2 C7 Cl Tl VI V2 S4 S3 FRONT VIEW BC IT 1000 W A M TRANS M5393...

Page 34: ...www SteamPoweredRadio Com P A LOAD MG L14 PA TUNE Ll2 1_ I l__ Ml M2 M3 M4 M5 S5 S6 S 7 S 8 Rl4 FRONT VIEW sc 1T 1000 W A M TRANS M 5393...

Page 35: ...www SteamPoweredRadio Com S7 S8 R26 S5 R20 Rl9 Rl4 CONTROLS FIL 8 PLATE START STOP 8 ADJUST BC 1T BC 500Tt BC 2 50T A M TRANSMI TERS...

Page 36: ...www SteamPoweredRadio Com L12 t L13 L14 Ll5 El 4 CIO L9 r L IO L II DUMMY ANT RI THRU RS POWER AMP SECTION BC IT 1 IOOOW1 A M TRANS M 53 3...

Page 37: ...www SteamPoweredRadio Com R21 Cl I Cl2 V7 T9 SIDE VIEW P A a MOD SECTION BC IT IOOOW A M TRANS M5393...

Page 38: ...T2 T3 T5 L4 L3 C4 RII C2 ri i i i i i W i i 1 i i i i i i i i i i i i i i i i i i 1 foi i i i 1 i i i i I i i i i i i 1 I mmmmi i 1 llli i l tli Iit i fri ii tiif lirBASE COMPONENTS FRONT VIEW B c IT...

Page 39: ...www SteamPoweredRadio Com S4 S3 L4 y il T5 1 T2 V3 __ _ _ V4 LI RIO C2 _ Tl Cl V I V2 BASE COMP ONEN TS f REAR VIEW BC IT IOOOW A M TRAN S M539...

Page 40: ...www SteamPoweredRadio Com S 2 l L 3 i C 9 2 o s C L L A T O R U N l T M 5 4 2 2...

Page 41: ...www SteamPoweredRadio Com l15 TB2 Al I I RI RB I I t I DUMM Y ANT I KW MOD IN BC IT IKW AM TRAN S...

Page 42: ...www SteamPoweredRadio Com U w er _ 0 U LO w C J o CD _J ot o er t 0 zlO o t t co w t 0 _ E 7 WO o m...

Page 43: ...www SteamPoweredRadio Com...

Page 44: ...S LIST OF PARTS PT A 30585 KAI J QTY QTY QTY QTY ITEM 111 P EIIIENCE OR FIN G N DIE8CIIIP TION MATL CH DA D11 DA L l 35i I G 26 I I0 15 f 41 A t 4 DRILL C TR BORC TO CL EAR rOUNDA TION BOLT MTL tx YEL...

Page 45: ...x 65 70 D C Filament Volts 10 A C Crystal Oscillator Vl 12BY7A Plate Volts 100 D C Screen Volts 50 D C Cathode Volts 8 D C Filament Volts 6 J A C First IPA V2 12BY7A A part of Osc Plate Volts 205 D c...

Page 46: ...I 0 r t r f N 0 0 l t 0 tO c 0 I l t 0 0 I f f r f r f o r c t r O r f f f f r f r f r f r 1 1 l oo 1 I oo I 00 I zoo l t I I tr 0 c f I c c I r r f c I c N r f N 0 0 0 Q O C t N r f N I N l t I I N t...

Page 47: ...f c 5 V f xx R7 C7 ts J rL or T 2 vV RIO I y _ 27 K t 2w Rq 27K C w C8 ot SOLDER a DB END OF VtE W JACK B I 3816 C 0 roo 140 REF ERE C E 8 1404 I SCHEMATIC OSCI L LATOR UNfT MS4Z2 MTL 111 LESS OTklnl...

Page 48: ...N lflo Q a 10 1 lfl u R 10 15K __j_ C 7 I o I _ _J GATES RADIO COMPANY QUINCY ILLINOla B Ge 528 SCALI LIST OF l ARTS REFERENCE PT FIN DESCRIPTION MATERIAL G N Cl7 00 2 c 15 LC7 T r ooo2s L_ TO GRIDS...

Page 49: ...Y QUINCY ILLINOIS LIST o PARTS c 77711 SCALI cs 01 G 0 iii 0 rt g P ct 0 0 I RS vvvv 120 K J 7 12 lll 1 _ ll z fl w L I n u I f l 13 1I V 00 I 01 4 l CflS o t r v 10 1 J r 0 1 oo t 5 c t al o ll S 9 c...

Page 50: ...www SteamPoweredRadio Com I I 78 3 16 t r 36no1 i I ffi rn ili ili FRONT VIEW I L2 1 2 3 16 I I 1 2s l2 SECTION A A SIDE VIEW...

Page 51: ...r 1 lfEllnR Fbe II YOL 54 K4 Tin 0 lll f t VOLT S3 Ooo e 1 r LOW oa K 5 L _ _ T 81 4 z I 5 ct HEIITE Fo e KS r o T4 2 e13 5 f RI FIL co r1 0L T 31 5 TB lt 1 RL L FI L r e11tls 81 5 Tl Rlf S Pl P f LL...

Page 52: ...TY QTY QTY QTY QTY I ITEM REFEREN C E PT G N j F I N I D E SCR I PT IO N I M ATER IA L XV2 8 00 8 Lf l J z f J C l I 1 0 Q 0 _ IJ CY I J 0 I S W tJGIN C HOKE 2 C2 _1_i 8MF1 _ TITLE HI GH V OLTA E 2 s...

Page 53: ...ltTI a 65 3c4 ICALS QTY I QTY I QTY I OT i IOTY IOTY l 1TEMI n EJHNCE I P IN Q N OESC l TION MATll IAL 3 4 NOT USED s 6 NOT_ useo 7 X V 3 866A XV4 866A V 2 It I Q 0 U E J I I a i rr I I 0 I Cl IOMFDI...

Page 54: ...RADIO COMPANY QUINCY ILLINOla B to5 2 33 SCALI LIST OF AltTS REFERENCE R 3 5000 IOW 2 _ G 3 P IN TO AUD 10 V3 3 DESCRIPTION MATERIAL TO AUD 9 v4 2 4 MFD R2 fOK ll R1 IOK t I R 2 500 1 OW TITL E BIAS 5...

Page 55: ...L7 __ _ R 12 _ 3 ME V M 3 P 1 r J I 0 I u j J II GATES RADIO COMPANY QUINCY 11 LINOl a C 777 1 SCALI _ _ _ 0 N LIST 0 FA TS Tl N C Tf T rm1TB2 1 T62 21 l MOO MON I I Ji I Mi_ R L I L i I 3 D J I rn AN...

Page 56: ...z I CO T f f l _ _______________J i l 4 1 l L c1 1111 l 0 0 1 D rAI T i ll 116 Ill al 1 JI o OJ L 1 l l r _ lfu X 1 c _io_ __ 8 6 T _____ _______ J 1 SWI VGJ 1 i C 10 fl I 00000 e 1 __ __ c2 I TO RMT...

Page 57: ...RF L Nlc 7 w _ l V 1 r 1 J 6 To IIIIMT cn1 Li S TOP co T W T 5 JC i C I t r o az 8 r A 1 J f I Sb y 11 c t Euf t i t cf _ t 1 1 l r re I ______ ___ 1 _ _ _ _ _ i jt 7 5 7 h M _ V 1 E j j s TO R T CTlt...

Search results

Summary of Contents for BC-1T

Reviews:

Related manuals for BC-1T

Brands by name

Popular brands

Gates BC-1T, Instructions For Installing And Operating

Search results

Summary of Contents for BC-1T

Reviews:

Related manuals for BC-1T

Brands by name

Popular brands