Страница 1: ...mImanatmI N 6573 FM 1H 1KW FM TRANSMITTER HARRIS INTERTYPE CORPORATION a A TES...
Страница 2: ...prior written consent of Seller EXCEPT AS SET FORTH HEREIN AND EXCEPT AS TO TITLE THERE ARE NO WARRANTIES OR ANY AFFIRMATIONS OF FACT OR PROMISES BY SELLER WITH REFERENCE TO THE EQUIPMENT OR TO MERCHA...
Страница 3: ...e INSTRUCTIONS FOR INSTALLING AND OPERATION OF GATES FM 1H 1 KW TRANSMITTER IB 888 0960 001 GATES RADIO COMPANY QUINCY ILLINOIS...
Страница 4: ...91 50 10 193 25 to 197 50 11 199 25 to 203 50 12 205 25 to 209 50 13 211 25 to 215 50 197 75 185 75 191 75 197 75 203 75 209 75 215 75 The frequency range for commercial FM broadcasting is 92 1 Mc to...
Страница 5: ...association to say I told you so Remember it is difficult to radiate harmonics if the equipment is built to suppress the harmonics and it is 4 In many instances interference may be caused by overload...
Страница 6: ...llation 4 2 4 Handling the 4CX1000A 5 2 5 Power Connection 5 2 6 Cooling 6 SECTION 3 OPERATION 3 1 Pre Operation 7 3 2 Test Data 7 3 3 Adjustment 7 3 4 Maintenance 9 SECTION 4 CIRCUIT DESCRIPTION 4 1...
Страница 7: ...plified Schematic Efficiency Curve Curve Coarse Tuning Overall Schematic PHOTOGRAPHS Transmitter Front View Open Back View Open Control Panel Front Control Panel Rear PA Chamber Base Figure 7 10 Figur...
Страница 8: ...bes or make adjustments inside equipment with any voltages ON While your Gates transmitter is fully interlocked you should not rely on the interlock switch for removing high operating voltages It is a...
Страница 9: ...Power VSWR Selector 1 Remote Local Switch Grid Tuning Control m Plate Tuning Control n Output Loading Control o 4 Potentiometers for adjustment of PA Plate Current Remote Reading Recycle Adjustment P...
Страница 10: ...ssible loose items such as pilot lights fuses loose screws and bolts If damage should occur during shipment all claims should be filed promptly with the transportation company If a claim is to be file...
Страница 11: ...should be accomplished Holes are provided in base of transmitter for entry of power audio and remote control wires Either side of the transmitter may be placed against a wall or other equipment Compl...
Страница 12: ...ter The audio input line enters the base of the transmitter in front of the fuseblock and connects directly to term inal board TB1 of the M 6425 exciter Terminals 1 and 3 are the audio inputs and term...
Страница 13: ...of exhausting this air from the transmitter room or enclosure Hear is a major enemy to electronic component deterioration A good system of removing the heated air from the transmitter and the transmi...
Страница 14: ...y push ing the Filament ON button The light behind the Filament ON button should light Next the blower should begin to run and come up to speed After the blower reaches maximum operating speed air pre...
Страница 15: ...cedure in Section 5 4 for method used in preliminary tuning Check the VSWR on the transmission line Position the VSWR Power switch on front panel to VSWR CAL and set VSWR Power meter for full scale de...
Страница 16: ...an easily be remotely controlled Des cription of the connections are covered in Section 5 3 4 Maintenance Maintenance of the FM 1H should consist of the following 1 Keeping the transmitter clean 2 Cha...
Страница 17: ...ntive maintenance schedule is always the best assurance for trouble free transmitter operation SECTION 4 CIRCUIT DESCRIPTION The FM 1H circuits will be described in the following sections Power Amplif...
Страница 18: ...iven control The variations are controlled by the Raise Lower switch on the front panel The primary taps on teh plate trnsformer T2 may have to be changed to compensate for input line voltage variatio...
Страница 19: ...the first meter from the left on the meter panel The voltage is controlled by the Filament Adjust mounted on the front panel The second meter reads PA plate current and is located in the Plate B lead...
Страница 20: ...n voltage of the power amplifier is motor controlled and is also connected to the remote control Raise Lower function for power output adjustment The M4845 Remote Power Output unit will provide R F mo...
Страница 21: ...1 for maximum capacity visual inspection and the PA Output Loading control at 2 3 maximum capacity Adjust the PA Plate Tuning for a peak 5 to 15 microampere indication on the VON Refer to tuning chart...
Страница 22: ...t If 1000 watts output is not indicated the Plate Tuning and Output Loading should be adjusted for 1000 watts out put and best efficiency At this point the plate current should be close 30 ma to that...
Страница 23: ...020 000 448 0103 000 992 1684 001 942 4607 001 620 0394 000 398 0184 000 398 0054 000 612 0233 000 612 0237 000 927 1715 001 827 1660 000 1 DESCRIPTION Blower 60 cycle Motor Screen 1 RPM Cap Plug in 8...
Страница 24: ...2 0576 002 Meter Power Output VSUR Scale 700 0052 000 Portable Multimeter VON R8 550 0029 000 Control 10K ohm R9 R24 550 0067 000 Control 10K ohm R10 542 0055 000 Res 15 ohm 10 W R11 1 R16 550 0059 00...
Страница 25: ...000 404 0157 000 384 0159 000 384 0121 000 DESCRIPTION Selector Switch Interlock Switch Push Switch N C Natural Less Lamp w 12 leads Push Switch N O Natural with 25 W Neon Lamp Push Switch N C R Red L...
Страница 26: ...54 000 C3 Same as C2 CR1 Diode 1N914 CR2 Same as CR1 384 0195 000 Ji Receptacle UG290A U 612 0237 000 R1 Res 200 Ohm 2 W 5 540 0594 000 R2 Same as R1 R3 Same as R1 R4 Same as R1 R5 Not Used R6 Potenti...
Страница 27: ...ap 29 Yrtfr S II FRoner V 1 oar 72 ez 44 6 e WILL eh VEZ 360 208 230 240 YAC 0 4 r _L 25 A iz vo eemorE NPUT 4 C4BINE7 8AS SW PP NC SOL T lee a s oh9 GATES RADIO COMPANY QUINCY ILLINOIS A DIVISION OF...
Страница 28: ...otch Filter at Second Harmonic Adjustable shorting sleeve At frequencies below resonance the Stub appears as an inductance At frequencies above resonunce the Stub appears os acapacity At the second ha...
Страница 29: ...o GENERA ToR NLN _ OPTIONAL MCc 2507 SCA GENERAToR I OTO 100V CONTROL GRID BIAS SUPPLY RP OU rPUT P A deI CX I000A AS SCREEK1 PLATE A 3000 N 0 TO 2 70V SCREEN GRID SUPPLY RJI 1 13 Z 4 7 CLOCK D1 AGRAm...
Страница 30: ...GATES RADIO COMPANY QUINCY ILLINOIS A DIVISION OF HARRIS INTERTYPE CORPORATION o 0 LUZ I el 2 a FIG 7 14 SIMPLIFIED SCHEMATIC FM1G H 814 2732 001...
Страница 31: ...e 60 50 EFFICIENCY e 40 30 500 600 GATES RADIO COMPANY QUINCY ILLINOIS A DIVISION OF HARRIS INTERTYPE CORPORATION 700 800 900 POWER OUTPUT KW 1000 FIG 7 15 CURVE PA EFFICIENCY FM1G H 814 2776 001 1100...
Страница 32: ...NGE MC I 2 3 4 5 6 7 86 92 94 5 97 99 I 0 3 I 0 6 92 94 5 97 99 I0 3 I0 6 10 8 2 3 4 5 6 7 8 9 0 0 0 0 o o o o 0 B CONNECTION 9 e 7 CONNECTED TO TUBE ANODE CAP BY I INCH COPPER STRAP SHORTING STRAP CO...
Страница 33: ...e e 2 e FMIG CONTROL PANEL REAR 800 0769 004 FMIG CONTROL PANEL FRONT 800 0769 o...
Страница 34: ......
Страница 35: ...IE 75PF 7 7 20K 12w RER ZOK 530 ZW CRI1 533 2 2K 1w CZ8 C53 1 4 0 115 0014 L5 C7 r E FLANGE So OHM IMPEDANCE PLATE TUNE e en ZOOFr L4 El R34 o 0 o F r e 11 50 q J_ oow XVI 4CX1000A RIZ C ME 520 R2 I 3...
Страница 36: ...he higher the efficiency the better 3 COMPUTING POWER OUTPUT Power output is computed either into the radiating antenna or a known dummy antenna In either case the resistance measurements are known Yo...
Страница 37: ...y to the transmitter In the simplest form the antenna and the ground can be likened to the two wires of an electric light circuit One is as important as the other Where the ground radials are bonded t...
Страница 38: ...io stage to the final audio stage Other outage conditions not affecting the transmitter are listed below for your checking Under certain conditions especially at higher altitudes the guy insulators wi...
Страница 39: ...of grounding in important places of the system and in some instances actually use of too many grounds The common ground is usually preferred to grounding both ends of audio cables and other similar sh...
Страница 40: ...Manager and stockholders When trouble comes he is under pressure He will do his best to correct the problem as fast as he can It is well to remember that electronic equipment has many circuits and ma...
Страница 41: ...6425 FM EXCITER AS USED WITH M 6533 STEREO GENERATOR AND M 6507 SCA GENERATOR S MARRI S 1NTERTYPE CORPORATION GA ES GATES RADIO COMPANY A Subsidiary of Harris Inter type Corporation QUINCY ILLINOIS 62...
Страница 42: ...S DRAWINGS 842 4885 001 Functional Block Diagram 838 2064 001 Interconnecting Diagram 838 1955 001 838 2157 001 827 1630 001 842 4693 001 838 2575 001 838 2026 001 842 4887 001 814 9571 001 Schematic...
Страница 43: ...r to remain ON continuously for improvement in stability The exciter may be turned ON or OFF with the power switch located on the power supply for any test purposes Parts List Change 994 6533 001 Ster...
Страница 44: ...le located at rear of the Amplifier module Insert module into chassis Connect P2 to J2 Connect P4 RF Sample color coded white to J4 Connect P3 RF Input color coded black to J3 C Audio Module 992 1830...
Страница 45: ...e iummiumusiminummilutimmlium GATES RADIO COMPANY QUINCY ILLINOIS A DIVISION OF HARRIS INTERTYPE CORPORATION PHOTO FRONT VIEW TE 1 EXCITER 800 0811 001...
Страница 46: ...elow 100 modulation ref 400 Hz 35 dB min 30 to 15 000 Hz Sub Carrier Suppression with or without modulation present 42 db min below 90 modulation Crosstalk main channel to sub channel or sub channel t...
Страница 47: ...mitter for an older type of exciter Refer to the packing check list for modules removed for shipping If the unit is already in atransmitter interconnections to the exciter have already been made If yo...
Страница 48: ...cope to junction of L8 and R30 Connect signal generator to junc tion of C17 C18 2 Do not turn power on to SCA Determine if unit being tested is to be tuned to 41 or 67 kHz 3 If desired frequency is 41...
Страница 49: ...trol equipment may be connected to ap propriate terminals on back of the exciter enclosure and the stereo mono functions performed remotely MAINTENANCE General maintenance should consist of merely kee...
Страница 50: ...t plug from audio unit and any SCA generators that are used This should isolate problem as to whether it is in the modulated oscillator or not EXCESSIVE CROSSTALK MAIN STEREO CHANNEL TO SCA CHANNEL Th...
Страница 51: ...about 1kHz for every 50 to 75 kHz drift of the modulated oscillator In other words assume that both the free running and locked frequency are exactly the same and no deviation from correct center fre...
Страница 52: ...he composite stereo signal including the pilot is completely re moved from the modulation input of the modulated os cillator If the function switch is in the stereo position left and right audio input...
Страница 53: ...put bias from the base of Q6 disappears causing Q6 to conduct This changes the bias at the base of Q7 causing it to con duct heavily When this happens the impedance from the junction of C17 and C18 to...
Страница 54: ...into the base circuit of amplifier Q13 Cancellation causes any remaining crosstalk at the base of Q13 to be removed This can be set precisely by crosstalk null control R33 Adjustment of the stereo gen...
Страница 55: ...38 000 548 0192 000 540 0583 000 548 0197 000 540 0042 000 540 0936 000 604 0005 000 472 0536 000 XA1 406 0367 000 XQ2 XQ3 XQ6 XQ7 404 0198 000 XF1 XF2 XF3 402 0013 000 10 WATT AMPLIFIER Cl C2 C3 C5 C...
Страница 56: ...mbol No R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R19 R18 R20 R21 R22 R23 Ti XQ1 XQ2 XQ3 Gates Part No Description 540 0880 000 Res 47 ohm 1 4 W 5 540 0881 000 Res 51 ohm 1 4 W 5 540 0948 000 Res 33K ohm...
Страница 57: ...hm 1 2 W 5 Res 1800 ohm 1 2 W 5 Res 3300 ohm 1 2 W 5 Res 2700 ohm 1 2 W 5 Res 1300 ohm 1 2 W 5 Res 470 ohm 1 2W 5 Res 330 ohm 1 2 W 5 Res 910 ohm 1 2W 5 Res 4300 ohm 1 2 W 5 Res 1500 ohm 1 2 W 5 Res 4...
Страница 58: ...0V Cap 250 uF 15V Cap 50 uF 25V Cap 35 uF 25V Cap 1uF 200V Cap 470 pF 300V 5 Cap 1000 uF 25V Cap 1000 pF 1 KV 10 CR1 CR2 CR3 CR4 J7 Li L5 L3 L6 L4 Q1 Q2 thru Q16 R1 R2 R10 R11 R61 R72 R3 R58 R4 R30 R5...
Страница 59: ...T3 478 0026 000 T4 478 0220 000 TJ 1 TJ3 612 0312 000 TJ2 612 0311 000 Transformer 19kHz Transformer 38kHz Transformer Transformer Test Point Jack White Test Point Jack Black Symbol No Gates Part No...
Страница 60: ...C29a C30 BALANCED SUB CARRIER MODULATOR 73 4 CRI 23 4 ISOLATION 011 ISOLATION 08 ISOLATION 012 ISOLATION 02 I9KHZ TUNED AMPLIFIER 03 38KHZ TUNED DOUBLER 04 a05 76KHZ TUNED PLIFIE 09 ISOLATION 010 ISO...
Страница 61: ...7 0 o c cji P8 6 0 S 7 O PI OE 81 2 P2 3 e Pd 3 e POWEE SUPPLY P7 3 PIS J TP PI 9 8 I PAN Pie ePeAP PLE0 1 3 PIP A PL 70 o Pa Ef AMP Pit AT Le OUTPUT JI pn 3 Z 4 000 z u000 Deg c 7 4 S 900 ofta c79 d...
Страница 62: ...pF C7 470pF r AP 15V P P R7 2 0 25f C3 1000 50 C117 01 1000 50 04 283055 24 9VDC CR12 05 184749A L__ _ 2113054 14 25 3VDC Cl2 01 C11 01 06 RCA 40319 4mV P 4 35 4VDC 07 26697 12 2VDC II 76DC 24VDC 148...
Страница 63: ...ECTIONS MAY VARY PER UNIT MOST DESIRABLE CONNECTIONS ARE DETERMINED ON FINAL TEST 6 GATES SPEC 914 6003 001 7 VALUES MAY VARY IN FINAL TEST L5 roirn 7V RMS 9 5V DC 2N3I18 100 RIO RII 33K CII 54V RMS I...
Страница 64: ...c pr 3134c _ g C7 3 2 vo R8 Z2K c2LL 000 R7 470 4 2 24 Vocre 27 e AMPS 4 AT 0 WATT LEVEL J2 3 8A 4T32 WATT cev Fi_ NEC 4 A AT NO Deive comp mom 09 04 71 22 C 4 3L3 5 50 fe 3 svev ft ms 41 7 5 iCio R9...
Страница 65: ...50 4 5 C2 4 048 9 2 DO R48 4 3K 029 e 9 08 2N 708 2 3vDc 033 Su 2402 240 34 443 330 030 33 e 35 k 3 9 VDc c12 047 IN9 4 IN 9 4 237 1 64 nor 2 2 Mil 202 00 03 220 CR S 1111r1 CZB 15t44 000 434 oo 2W I...
Страница 66: ...OGC C DG 0 e i212 K 1 SI 10wq IN STEREO ENERGISED hEw 9 OE E NE RA Z ED ROTORS ENE RtZEO PRINTED BOARD GI 10 CHASSIS AND Mint JUMPER ir NEEDED o CRI IN 9 4 a Jti viEvvE 0 PrZCONA VZEASZ 41 KHZ AiliDO...
Страница 67: ...MONO LEVEL ADJuST T1 XKI BOTTOM ViEw cee OGO CDG a 0 K 1 SHOwq IN STEREO ENERG17 Eo v Ew 9 DE ENERGIZED 5010 15 E E PC IsED PRINTED BORD ONO 111 CI 155515 ONO 111 JUMPER IF NEEDED J11 1 4 24v o cR I I...
Страница 68: ..._ t Nerril R 7 F 1 4 c26 Ct1 CIO 44 154 251 r_r __FL 4 v CRI L 5 Cl2 n 154AS 2 2 MM 51 0G C R2 C13 INS4A 1500 OSC ocwC SUG 14 rec 5 8 voc 0voc 5 2voc 4 C 31 07 ewer NOT R44 3 3K 1 1 e VOG 5 q roc R45...
Страница 69: ...SVDC Non PEAK 2 8 dvOc 5014 31K 14 rVDC 9egi 5 NE Q 21 497 204 P52 C22 250 Ve Ave 2 4 Oc DC er IK 3_ 5V 14 voc 223 5 lo es 1 _L c 2 is V Phi 4 A 4 Vr AUD 0 5 80 OUT 04 PH 4 5 47 TWO e AirS Seopel VDC...
Страница 70: ...1 OD 01 0 CT In 3 C is 3 r L 3 ce r cq cr r r 4 1 C1C r CV LC L r cp cn 13 cc r C 1 i I 1 GATES RADIO COMPANY QUINCY ILLINOIS A DIVISION OF HARRIS INTERTYPE CORPORATION SCHEMATIC ATI ISOLATION PAD FM...
Страница 71: ...Federal Building 1522 K Street N W Phone 223 5508 Area 202 LOS ANGELES CALIFORNIA 90007 1945 South Figueroa Phone 747 7129 Area 213 CANADIAN SALES GATES RADIO COMPANY CANADA Division of Harris Intert...
