B5DM510Wireless Microphone Base Station

Telex  Op er ating In struc tions PRO FES SIONAL WIRELESS IN TER COM SYS TEM TR-300, TR-300P, BTR-300 TA BLE OF CON TENTS IN TRO DUC TION..............................................................................................................................1 GEN ERAL DE SCRIP TION............................................................................................................1 BTR-300 BASE STATION TRANS CEIVER..................................................................................3 TECH NI CAL IN FOR MA TION......................................................................................................3 SPEC I FI CA TIONS..................................................................................................................3 FEA TURES..............................................................................................................................4 CON TROLS AND CON NEC TIONS..............................................................................................5 FRONT PANEL.......................................................................................................................5 REAR PANEL.........................................................................................................................6 TR-300 BELT-PACK TRANS CEIVER...........................................................................................9 TECH NI CAL IN FOR MA TION......................................................................................................9 SPEC I FI CA TIONS..................................................................................................................9 FEA TURES............................................................................................................................10 CON TROLS AND CON NEC TIONS............................................................................................10 EX TER NAL CON TROLS ...................................................................................................10 IN TER NAL CON TROLS.....................................................................................................12 EQUIP MENT SET-UP....................................................................................................................13 UN PACKING................................................................................................................................13 AN TENNA IN FOR MA TION........................................................................................................13 AN TENNA CON NEC TIONS...............................................................................................13 AN TENNA PO LAR IZA TION..............................................................................................14 DIS TANCE BE TWEEN AN TENNAS.................................................................................14 AN TENNA PLACE MENT...................................................................................................15 IM PROVING RE CEP TION/IN CREASING RANGE..........................................................16 BTR-300 SET-UP..........................................................................................................................17 LO CA TION............................................................................................................................17 IN TER NAL IN TER COM SWITCHES.................................................................................17 RACK MOUNTING..............................................................................................................19 LO CAL HEAD SET CON NEC TION....................................................................................21 HEAD SET MIC SE LECT SWITCH.....................................................................................21 TRANS MIT SWITCH...........................................................................................................21 IN TER CON NEC TION TO A HARD-WIRED IN TER COM...............................................22 AUX IL IARY AU DIO CON NEC TION.................................................................................23 POWER CON NEC TION.......................................................................................................23 DUMMY LOAD....................................................................................................................23 TR-300 SET-UP.............................................................................................................................24 HEAD SET CON NEC TION..................................................................................................24 DY NAMIC/ELECTRET MIC SWITCH..............................................................................24 BAT TERY IN STAL LA TION................................................................................................25 -i- TA BLE OF CON TENTS (CONT.) PRE-WALK-THRU CHECK LIST................................................................................................26 SYS TEM OP ER A TION..................................................................................................................27 BTR-300 OP ER A TION.................................................................................................................27 POWER..................................................................................................................................27 LO CAL HEAD SET VOL UME.............................................................................................27 PUSH TO TALK/LOCK TO TALK SWITCH......................................................................27 TR-300 OP ER A TION....................................................................................................................28 POWER...........................................................…

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21.75-27 MHZ(PART 74) 18.75-21.75 MHZ(PART 90) 174-216 MHZ(PART 74) 150-174 MHZ(PART 90) OUTPUTAMPAMPVCOMIXER DIVIDE BY 8 GERBER MOD PREEMPCOMPANDLPF LIMITER AUDIO IN BTR-300 BLOCK DIAGRAM BTR-300 ACTIVE DEVICES DES DEVICE FUNCTION 1. Q501 MMBT3906 Rectifier 2. Q502 MMBFJ309 Oscillator 3. Q503 FMMT5179 Buffer 4. Q505 MMUN2212 Switch 5. Q506 FMMT5179 Buffer 6. Q507 MMBR901 RF Power amplifier 7. U501 78L05 Voltage regulator 8. U502 NE575 Compandor 9. U503 NE612 Oscillator/mixer 10. U504 UPB1509 Divide by eight

BTR-300 OPERATIONAL DESCRIPTION 1. Compressor U502C is a linear compressor which is used to improve the system signal to noise ratio. A complementary expander is placed at the receiving end. 2. Pre-emphasis U502B is the pre-emphasis amplifier. The value of 115us is set by C510, R505 and R506. 3. Modulation limiter When the level at TP501 exceeds a preset value, Q501 conducts and raises the voltage across C506 which lowers the gain of U502C and holds the level constant. VR501 sets the deviation. 4. Gerber modulator The left half of U503 is configured as a Colpitts oscillator with a Gerber modulator. D502 through D505 inclusive provide temperature compensation. L510 is used to set the crystal on frequency. 5. VCO Q502 and associated components form a voltage controlled oscillator which operates at the carrier frequency. 6. Divider and mixer U504 is a divide by eight which feeds the other half of U503 which is a mixer. When Q502 is running at exactly eight times the crystal then the zero beat signal from U503 is used to maintain this lock condition. 7. Buffer and output stages Q503 and Q506 are buffer stages. Q505 is used on power up to keep Q506 off until the loop locks. Q507 is the output stage. Matching and low pass filtering are provided by C543, C544, C545, C546, L507, L508 and L509.

770106k.rep BTR300 Parts List Audio & Display Board Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 1010 TDA1010 U108 2 1DA NE5532 U107,U119 1 1DA NE5532 U118 1 1OI VTL5C1 CA101 1 2DA NE5532 U103 1 34119N MC34119 U111 2 3DA NE5532 U101,U102 1 3DA NE5532 U104 1 3DA LM392 U109 1 3PIN-XLR Val J104 1 4013 4013 U116 1 4DA NE5532 U104 1 4DA LM393 U105 2 4DA NE5532 U106,U110 2 4DA NE5532 U107,U119 15-Nov-99 12:48 Page 1 Bill of Materials 770106K.S01 Page 1 770106k.rep Quan Type Value Ref Designators ======================================================================== 2 575EE NE575 U112,U113 1 6DA LM358 U114 1 78L 78L05 U117 1 C .0022UF C103 8 C 100PF C104,C112,C113,C115, C127,C153,C163,C167 7 C .01UF C106,C118,C183,C186, C187,C210,C211 1 C 47PF C116 5 C .001UF C129,C147,C157,C158, C191 1 C 27PF C130 3 C 10PF C135,C212,C213 2 C 220PF C137,C139 1 C .1UF C145 1 C .015UF C195 1 C .0015UF C196 1 C 560PF C197 15-Nov-99 12:48 Page 2 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 C 820PF C198 Page 2 770106k.rep 2 CE 2.2UF C101,C102 21 CE 1UF C105,C109,C111,C121, C125,C126,C131,C132, C138,C152,C164,C166, C168,C170,C181,C182, C184,C206,C207,C208, C209 13 CE .1UF C107,C110,C119,C122, C123,C128,C134,C136, C143,C144,C146,C180, C194 22 CE 10UF C108,C120,C150,C151, C154,C159,C160,C161, C162,C171,C172,C173, C174,C175,C176,C177, C178,C185,C199,C200, C201,C202 7 CE 100UF C114,C148,C165,C169, C203,C204,C205 3 CE 22UF C117,C133,C149 1 CE .47UF C124 3 CE 4.7UF C140,C155,C189 3 CE 470UF C141,C142,C156 1 CE 2200UF C179 15-Nov-99 12:48 Page 3 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 COAXCONNECTOR Val J106 4 D 1N4148 D102,D108,D111,D112 1 D 1N4004 D107 Page 3 770106k.rep 4 DB 1N4004 D103,D104,D105,D106 3 DIODE 1N4148 D101,D109,D110 9 DL VAL D601,D602,D603,D604, D605,D606,D607,D608, D609 1 FUSE 1A FB F101 21 JH VAL J1,J10,J11,J12,J13,J14, J15,J16,J17,J18,J19,J2, J20,J21,J3,J4,J5,J6,J7, J8,J9 1 JX3F VAL J101 2 JX3M VAL J103,J105 1 LA 1.2UH L101 6 MOLEX3H Val J108,J109,J110,J111, J112,J113 2 NPN-EBC MPS3704 Q110,Q111 1 P P102-1 P102 15-Nov-99 12:48 Page 4 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 P P103-1 P103 1 P P114-1 P114 1 PINJACK-NC Val J107 4 PNP-EBC MPS3702 Q102,Q103,Q106,Q107 1 PNP-EBC TIP30 Q108 Page 4 770106k.rep 2 POT 100K VR103,VR603 4 QNEBC 2N4124 Q112,Q113,Q114,Q115 3 QPDGS J177 Q101,Q104,Q105 1 QPEBC MPS3702 Q109 1 R 3.9K R106 5 R 4.7K R125,R130,R131,R132, R133 6 R 10K R128,R129,R148,R149, R213,R217 1 R 180K R147 1 R 39K R175 15-Nov-99 12:48 Page 5 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 R 6.8K R177 1 R 1M R178 9 R 100K R179,R194,R196,R197, R199,R200,R202,R203, R205 1 R 22K R180 2 R 470K R181,R214 1 R 3.3K R210 1 R 150 R237 Page 5 770106k.rep 1 R 1K R238 1 R 180 R239 1 R 470 R240 2 RES 200K R101,R103 4 RES 2.2K R102,R104,R105,R123 1 RES 100 R107 21 RES 10K R108,R112,R116,R121, R126,R127,R134,R141, R144,R153,R160,R163, R169,R170,R172,R173, 15-Nov-99 12:48 Page 6 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== R190,R216,R221,R224, R232 4 RES 4.7M R109,R110,R136,R137 6 RES 15K R111,R117,R143,R146, R161,R168 4 RES 18K R113,R118,R142,R145 3 RES 47K R114,R138,R167 7 RES 1M R115,R139,R140,R164, R176,R235,R236 1 RES 3.3K R119 1 RES 4.3K R120 1 RES 5600 R122 Page 6 770106k.rep 1 RES 12K R124 1 RES 560 R135 7 RES 1K R150,R151,R195,R198, R201,R204,R222 1 RES 3K R152 1 RES 8.2K R154 4 RES 150K R155,R156,R157,R159 15-Nov-99 12:48 Page 7 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 RES 160 R158 1 RES 3.9K R162 7 RES 100K R165,R211,R212,R215, R229,R230,R234 1 RES 470K R166 2 RES 330 R171,R174 1 RES 4.7 R182 1 RES 330K R184 1 RES 3.6K R185 1 RES 294 R186 1 RES 6.8K R188 1 RES 68K R189 Page 7 770106k.rep 1 RES 1.3K R191 2 RES 10 R192,R193 2 RES 47 R207,R228 2 RES 16.2K R208,R209 15-Nov-99 12:48 Page 8 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 2 RES 20K R218,R231 1 RES 1.8K R219 1 RES 5.1K R220 1 RES 6.2K R223 2 RES 16K R225,R233 1 RES 33K R226 1 RES 56K R227 1 RVA 2.5K VR101 1 RVA 10K VR102 3 RVB 100K VR601,VR602,VR604 2 SDDA VAL S109,S110 3 SDDB VAL S101,S103,S112 1 SDIP VAL S104 Page 8 770106k.rep 1 SS3 VAL S111 15-Nov-99 12:48 Page 9 Bill of Materials 770106K.S01 Quan Type Value Ref Designators ======================================================================== 1 SSD VAL S102 4 SSS VAL S105,S106,S107,S108 49 TP TP1,TP10,TP11,TP12,TP13, TP14,TP15,TP16,TP17, TP18,TP19,TP2,TP22,TP23, TP24,TP25,TP26,TP27, TP28,TP29,TP3,TP30,TP31, TP32,TP33,TP34,TP35, TP36,TP37,TP38,TP39,TP4, TP40,TP41,TP42,TP43, TP44,TP45,TP46,TP47, TP48,TP49,TP5,TP50,TP51, TP6,TP7,TP8,TP9 1 TT Val T101 Total Parts: 411 Page 9 770198.rep BTR300A Part list Receive Board Bill of Materials 770198.S01 Quan Type Value Ref Designators ======================================================================== 1 C .001UF C319 1 CAP 5.6PF C301 1 CAP .82PF C302 2 CAP .5PF C303,C307 7 CAP 100PF C304,C305,C317,C328, C378,C428,C478 7 CAP .001UF C306,C309,C318,C340, C390,C440,C490 1 CAP 1.2PF C308 1 CAP 33PF C310 1 CAP 47PF C311 1 CAP .0047UF C312 1 CAP C313 7 CAP .01UF C314,C315,C316,C320, C370,C420,C470 2 CAP 180PF C321,C371 1 CAP 56PF C322 4 CAP 68PF C323,C373,C423,C473 15-Nov-99 13:18 Page 1 Bill of Materials 770198.S01 Page 1 770198.rep Quan Type Value Ref Designators ===================================================================…

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TP507 J501-3 J501-2 J501-1 TP505 TP503 TP501 C513 1UF + R510 12.1K 3.92K R512 C514 10UF + TMPD4148 D502 TMPD4148 D503 TMPD4148 D504 TMPD4148 D505 3.92K R511 R513 47.5K 100PF C548 MMBFJ309 Q502 .01UF C541 100UF C506 + U502:C NE575 1314 11 16 10K 3.9K 10K G 2012 8 15 R503 30.1K R502 30.1K 1UF C505 + R501 68.1K C504 100PF 100 R523 .01UF C531 100 R518 33PF C523 .01UF C526 C527 100UF + L501 * C524 475 R529 .01UF C539 82.5K R527 .01UF C537 10 R533 .01UF C542 * L509 * L508 * L507 * C546 * C545 * C544 * C543 R517 47.5K D501 FMMV105 C525 4.7PF C529 8.2PF C528 1.5PF L502 .47UH R519 221 R520 47.5 C530 2.2PF R521 10K R522 4.75K Q503 FMMT5179 C532 .001UF R524 221 L503 1.2UH C533 * L504 * C535 * R526 100 C538 10PF Q506 FMMT5179 R528 100K L505 * R530 1K C540 10PF R532 475 R531 10K Q507 MMBR901 L506 1.2UH 1UF C507 + U501 78L05 IN OUT GND .1UF C502 C501 10UF + R504 10K 4.7UF C508 + MMBT3906 Q501 R507 22.1K R508 15K C511 .1UF R506 1.5K R505 10K C510 .01UF 1UF C509 + U502:B NE575 2 1 3 R509 49.9K 1UF C503 + C547 .001UF MMUN2212 Q505 22K 22K D507 TMPD4148 C534 1UF + U503 NE612 5 8 6 7 2 13 C521 .01UF C522 .001UF TP502 C518 .01UF R516 100 C515 47PF C516 68PF R534 5.62K C520 .01UF U504 UPB1509 1 8 7 2 3654 R525 221 C536 2.2PF C519 .001UF C517 .01UF R515 392 Y501 D506 FMMV109 R514 10K L510 C512 1UF + VR501 5K E501:1 E501:2 TP504 TP509 TP508 TP506 VAL U502:A 9 4 7 6 3.9K 10K10K G 5 10 770599 PRE-RELEASE NONE 1 OF 1 770599 7/8/99 DEVIATION BTR-300 RB TRANSMIT BOARD NO PART 1.8PF 1.8PF C524 6.8PF 5.6PF 4.7PF 6.8PF 5.6PF 4.7PF 15PF 12PF 15PF *FREQUENCY DEPENDENT COMPONENTS C533C535C543C544C545 33PF 27PF 27PF 33PF 33PF 27PF L505 120NH 82NH 100NH 150NH 120NH 100NH 68NH68NH L507L508L509 56NH 47NH 56NH 47NH L504 100NH 120NH 150NH C546 22PF 22PF 18PF195-216 MHZ 175-195 MHZ 150-175 MHZ PC10/07/99 REFERENCE PCB 750505 879234(T.H) 879233(SMT)BTR-300 D SHT REV STATUS REV SHEET 4321 = .050 IN = .030 IN = .010 IN DESCRIPTIONQTY PART NO hy-gain O RO R TELEX TELEX COMMUNICATIONS INC. Lincoln Nebraska U.S.A This drawing, written description or specification represents a proprietary product of TELEX, Lincoln, NE., and shall not be released, disclosed, nor duplicated without the written permission of TELEX. NEXT ASSY. USED ON ITEM PROD APPD. CHK BY DR BY DATE SHEET SIZE TITLE MATERIAL: DESIGNATOR DWG.NO. 57010 CODE IDENT SCALE APPLICATIONS ANGLES 1 : BENDS 2 STRAIGHTNESS AND/OR FLATNESS .005 IN./1 IN. CONCENTRICITY .010 TIR UNMARKED ANGLES, BENDS o AND INTERSECTIONS 90 THREADS- EXT. CLASS 2A INT. CLASS 2B - + + + - - oo + - + 64 FINISH: MACHINED - FRACTION: .XXX .XX .X DECIMAL: UNSPECIFIED LIMITS OF TOLERANCE APPDDATECHG NOLTRDESCRIPTION REVISIONS NOTES: TP14 TP13 TP4 TP10 R132 4.7K TP9 R131 4.7K TP8 4.7K R130 TP15 TP33 TP34 TP35 TP42 TP43 TP26 TP27 TP28 TP29 TP23 TP30 TP24 TP36 TP25 TP37 TP38 TP39 TP40 TP41 TP31 TP32 TP1 TP2 TP6 TP47 J110 TP48 TP7 TP45 J111 J108 TP46 J109 TP19 TP51 P114-1 TP22 TP49 J103 12 3 TP16 TP18 TP17 .001UF C157 C203 100UF + S103:A S104:8 C149 22UF + S104:1 .001UF C158 J105 12 3 J104 2 3 1 S103:B S104:6 S104:5 S104:4 S104:7 S104:3 S104:9 R186 294 S104:2 VR102 10K R223 6.2K .015UF C195 R225 16K 560PF C197 P103-3 P103-2 P103-1 3.9K R106 P102-10 P103-7 P102-11 P103-8 10K R149 D607D608 P103-5 100K VR603 P102-1 P103-6 C136 .1UF + 1M R178 220PF C137 22K R180 C138 1UF + 100K R179 220PF C139 NE5532 U119:B 6 5 8 7 LM358 U114 4 3 2 8 1 C194 .1UF + C180 .1UF + S109 39K R175 S112:B NE5532 U107:B 6 5 8 7 NE5532 U107:A 4 3 2 1 VR101 2.5K 4.7K R125 C115 100PF 10K R128 R185 3.6K P102-9 P102-8 D606 10K R148 180K R147 R120 4.3K R119 3.3K S101:B R127 10K U105:B LM393 7 8 6 5 LM393 U105:A 4 3 2 1 18K R118 C110 .1UF + S101:A R140 1M Q104 J177 R112 10K 18K R113 C107 .1UF + 100PF C104 C103 .0022UF J101 1 3 2 18K R145 U103:B NE5532 7 6 5 4 C119 .1UF + 18K R142 47PF C116 NE5532 U103:A 2 3 8 1 R224 10K S102 C112 100PF 1.2UH L101 C113 100PF 1UF C111 + R122 5600 C189 4.7UF + 180 R239 1K R238 150 R237 S112:A 1UF C209 + .47UF C124 + 1UF C125 + R155 150K NE5532 U104:B 5 6 8 7 R126 10K U104:A NE5532 1 2 3 4 10K R129 C122 .1UF + R133 4.7K 10UF C178 + R205 100K S108 R203 100K 10UF C177 + 10UF C176 + R202 100K R200 100K S107 10UF C175 + 10UF C174 + R199 100K R197 100K S106 10UF C173 + 100K R196 100K R194 C172 10UF + S105 C171 10UF + 470 R240 3.3K R210 Q115 2N4124 Q114 2N4124 Q113 2N4124 2N4124 Q112 D602 C202 10UF + 1K R204 D603 C201 10UF + 1K R201 D604 C200 10UF + 1K R198 R195 1K 10UF C199 + P103-4 D605 MPS3702 Q109 100PF C167 U113:D NE575 17 18 19 NE575 U113:C 11 16 13 14 3.9K 10K 10K G 15 U112:D NE575 17 18 19 NE575 U112:C 11 16 13 14 3.9K 10K 10K G 15 C162 10UF + C170 1UF + NE575 U113:B 3 2 1 C169 100UF + C161 10UF + U113:A NE575 7 6 4 9 G 10K10K 3.9K 20 5108 C168 1UF + C160 10UF + C166 1UF + 1UF C164 + U117 78L05 GND INOUT C179 2200UF + 1N4004 D105 1N4004 D104 1N4004 D106 1N4004 D103 .01UF C186 F101 1A FB J107 C187 .01UF R188 6.8K C152 1UF + C155 4.7UF + 100PF C153 R189 68K U111 MC34119 3 4 6 8 5 27 1 10 R192 10 R193 S111 P114-2 VTL5C1 CA101 C181 1UF + P102-3 D601 16.2K R208 16.2K R209 1N4004 D107 R207 47 TIP30 Q108 820PF C198 R165 100K C154 10UF + C185 10UF + C132 1UF + R164 1M R167 47K 1N4148 D101 1N4148 D102 C131 1UF + P102-4 10K R153 100K VR601 P102-5 R160 10K R190 10K R166470K R191 1.3K LM392 U109:B 6 5 8 7 LM392 U109:A 4 3 2 1 10PF C213 .01UF C210 MPS3702 Q107 15K R146 C123 .1UF + 10K R141 MPS3702 Q103 15K R117 .01UF C183 MPS3702 Q106 15K R143 R136 4.7M .01UFC118 C117 22UF + P103-9 100K VR604 P103-10 560 R135 P102-7 100K VR602 P102-6 1N4148 D112 100 R107 1UF C105 + R108 10K J177 Q101 C106 .01UF R109 4.7M R110 4.7M R114 47K 10UF C108 + R115 1M 1UF C109 + 15K R111 .01UF C211 1M R236 NE5532 U101:B 6 5 8 7 C102 2.2UF + C101 2.2UF + 2.2K R105 2.2K R102 200K R103 200K R101 R219 1.8K P103-11 D609 D110 1N4148 D109 1N4148 R212 100K R215 100K S110 R234 100K R170 10K R168 15K R169 10K 10KR173 10KR172 R162 3.9K R116 10K Q110 MPS3704 2.2K R104 MPS3702 Q102 10K R144 1M R176 10K R232 47 R228 1K R222 R123 2.2K NE575 U112:A 9 4 6 7 8105 20 3.9K 10…

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