Hazeltines Neutrodyne Circuit Radio Receiver VINTAGE w/ Radio Repair Bonus

Description: Great CD and Easy to Read in Standard .pdf format on a CD ! Hazeltine was famous in his day: Below is some information The Neutrodyne was a particular type of Tuned Radio Frequency (TRF) radio receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized". In most designs, a small extra winding on each of the RF amplifiers' tuned anode coils was used to generate a small antiphase signal, which could be adjusted by special variable trim capacitors to cancel out the stray signal coupled to the grid via plate-to-grid capacitance. The circuit was developed in the early 1920s by Alan Hazeltine and made by a group of more than 20 firms that were licensed to produce Hazeltine-Neutrodyne receivers known as the Independent Radio Manufacturers. Hazeltine's invention effectively neutralized the high-pitched squeals that had plagued early radio sets. The design also neutralized the stranglehold that RCA then held on the commercial radio industry. Compared to the technically superior Superheterodyne the Neutrodyne was cheaper to build and operate, and much easier for non-technical owners to use. To properly set up a Neutrodyne receiver, not only did the circuitry need to be aligned for peak performance, (that is, getting all its tuned circuits operating "in step"), it also had to be neutralized. However, this procedure only needed to be done once (albeit by a serviceman) and thereafter the radio could be tuned by anyone without special skill, a unique feature at the time. The neutrodyne was the first commercial receiver suited to use by the general public. By 1927 some ten million of these receivers had been sold to consumers in North America. By the 1930s, advances in vacuum tube manufacturing had yielded the tetrode and, soon after, the pentode, both of which had reduced control grid to plate (Miller) capacitance. These advances finally made Edwin Armstrong's Superheterodyne design practical for domestic receivers. Ironically, these same advances made it also possible to build superior TRF receivers that did not need neutralization, but since an even more superior superheterodyne could be made for about the same cost, the TRF technique fell into disuse.AND as a Added Bonas !! Huge Course in 71 Lessons, On CD . This Course was taught in House and also w/ Mail Order. Simple and esy to follow, If you ever wanted to learn Tube Radio Repair, Here is your chance, If you know the basics, here is a chance to refine the fundamentals. It is well done.Marconi Institute & RCA World wide Instruction.RECEIVING SET DIAGRAMS - PART 1 SHEETAERO SEVEN................2 AERO SHORT WAVE ADAPTER FORA.C. RECEIVERS............2 AMRAD A.C. 7..............3 APEX 36 ALL-ELECTRIC......3 ATWATER KENT 20...........4 ATWATER KENT 30...........5 ATWATER KENT 32...........5 ATWATER KENT 35...........6 ATWATER KENT 40...........6 BALKITE - MODEL A.........6 BOSCH 28..................7 BREMER TULLY 7-70.........8 BROWNING DRAKE-34, 36, & 38...8 COLONIAL 31 A.C...........9 CROSLEY 608...............9 CROSLEY 704-A.............10 DAVEN BASS NOTE...........10 DAY FAN A.C. POWER SET....11 DAY FAN 35 D.C............11 FADA -MODELS 10,11,30 & 31 (60 CYCLES)..12 FADA-MODELS 10Z,11Z,30Z & 31Z (25 CYCLES)...12 FEDERAL ORTHO-SONIC A.C...12 FREED EISMAN NR 5.........13 FREED EISMAN NR 80........13 FRESHMAN EQUAPHASE........24 FRESHMAN-MODEL G.........24 GILFILLAN GN 6...........14 GREBE SYNCHROPHASE.......14 HAMMERLUND ROBERTS HI-Q..15 KING-MODEL FF............15 KING-MODEL H ............15 KING-62 TRF..............16 KOLSTER 6K...............17 MAJESTIC A.C.............17 MOHAWK ALL-AMERICAN LYRIC MODELS60,61,62,65,& 66.........18 MOHAWK ALL-AMERICAN LYRIC MODELS80,83,84,85 & 88.........18 PFANSTEIHL 34 & 50 A.C...19 PHILCO ELCTRIC- SERIES 5.19 RCA- RADIOLA 16..........20 RCA- RADIOLA 17..........20 RCA- RADIOLA 18 A.C......21 RCA- RADIOLA 18 D.C......21 RCA RADIOLA 60...........22 RCA RADIOLA 62...........22 ROBERTS AC...............23 SILVER MARSHALL-MODEL 630......23 SPARTON EQUASONNE-MODEL 89.....25 SPLITDORF INHERENTLY ELECTRIC..25 STEINITE 261...................26 STEWART WARNER-MODELS 801,801A 811, AND 811A SERIES B.......26 STROMBERG CARLSON-MODELS 635,636..27 ZENITH-MODELS 11,12,AND 14.......27 CHARACTERISTICS OF RECEIVING VACUUM TUBES...29 PART 2 ATWATER KENT MODEL 55...........29 BRANDES MODEL B-15 & 16.........29 CROSELEY R.F.L. 90..............30 CROSELEY MODEL 804..............30 FADA MODELS 50,71,71, & 72......31 FREED-EISMAN NR 55 A.C..........31 FREED-EISMAN NR 78..............32 GREBE SYNCHROPHASE BATTERY......32 GREBE A.C. SIX..................33 MAJESTIC MODEL 90...............33 RCA-RADIOLA 28- A.C.............34 RCA-RADIOLA 25..................36 RCA-RADIOLA 20..................36 RCA-RADIOLA 44..................37 RCA-RADIOLA 66..................38 STROMBERG-CARLSON NO. 641.......38 STROMBERG-CARLSON NO. 846.......39 ZENITH 17.......................39 FOREWORD - INTRODUCTION TO RADIO TECHNICAL LESSON 1 - MATHEMATICS LESSON 2 - UNITS OF ELECTRICAL MEASUREMENTS AND SYMBOLS LESSON 3 - THE ELECTRON THEORY-SUBSTANCE AND MATTER-STATIC ELCTRICITY LESSON 4 - MAGNETISM LESSON 5 - ELECTROMAGNETISM-ELECTROMAGNETIC INDUCTION LESSON 6 - PRIMARY CELLS LESSON 7 - RESISTANCE AND CONDUCTION LESSON 8 - ELECTRICAL CIRCUITS LESSON 9 - D.C. MOTORS LESSON 10 - D.C. GENERATORS LESSON 11 - A.C. CURRENT LESSON 12 - THE MOTOR-GENERATOR LESSON 13 - POWER TRANSFORMERS LESSON 14 - INDUCTANCE LESSON 15 - CAPACITY LESSON 16 - THE STORAGE OR SECONDARY BATTERY LESSON 17 - THE USE OF STORAGE BATTERIES ON SHIPBOARD LESSON 18 - METERS LESSON 19 - GRAPHS LESSON 20 - SOUND LESSON 21 - ELECTROMAGNETIC WAVES LESSON 22 - FUNDAMENTALS OF RADIO RECEPTION LESSON 23 - VACUUM TUBES LESSON 24 - CHARACTERISTIC CURVES LESSON 25 - THE OSCILLATORY CIRCUITS LESSON 26 - MID-TERM EXAMINATION LESSON 27 - PRACTICAL RADIO CONSTRUCTION LESSON 28 - PRACTICAL RADIO CONSTRUCTION LESSON 29 - AUDIO AMPLIFIER CIRCUITS LESSON 30 - PRACTICAL RADIO CONSTRUCTION LESSON 31 - REGENERATIVE DETECTOR WITH CAPACITIVE CONTROL OF FEED-BACK LESSON 32 - PRACTICAL CONSIDERATIONS FOR THE DESIGN OF SCREEN-GRID RECEIVERS LESSON 33 - CONSTRUCTIONAL DETAILS OF THE RCA INSTITUTES A.C. SCREEN-GRID RECEIVER LESSON 33-A - BUILDING THE BATTERY-OPERATED SCREEN-GRID RECEIVER LESSON 34 - PRACTICAL RADIO CONSTRUCTION LESSON 35 - COMMON FAULTS AND TROUBLES LESSON 36 - PRACTICAL RADIO CONSTRUCTION LESSON 37 -THE DEVELOPMENT OF THE SUPER-HETERODYNE LESSON 38-PRINCIPLES AND USE OF TEST EQUIPMENT FOR SERVICING RADIO RECEIVERS LESSON 39 - INSTRUMENTS USED IN SERVICING RADIO RECEIVERS LESSON 40 - INSTRUMENTS USED IN RADIO SERVICING AND PRINCIPLES OF SET TESTING LESSON 41 - BALANCED ARMATURE LOUD SPEAKERS LESSON 43 - RADIOLA 28 A.C. OPERATED LESSON 44 - VICTOR MICRO-SYNCHRONOUS RADIO R-32, R-52, RE-45, RE-75 LESSON 45 - GENERAL ELECTRIC MODEL H-31 - WESTINGHOUSE MODEL WR-5, RADIOLA MODEL 80 - GRAYBAR MODEL 700 LESSON 46 - GENERAL ELECTRIC MODELS H-51 & H-71 - WESTINGHOUSE MODELS WR-6 & WR-7- REDIOLA MODELS 82 & 86 - GRAYBAR MODELS 770 & 900 LESSON 47 - CROSELEY R.F.L. 90 -- ZENTIH 17 LESSON 48 - PRACTICAL RADIO CONSTRUCTION LESSON 42 - THE ELCTRO-DYNAMIC SPEAKER LESSON 49 - RADIO RETAILING - SALESMANSHIP LESSON 50 - GREBE - BATTERY AND A.C. RECEIVERS LESSON 51 - BATTERY ELIMINATORS LESSON 52 - PRACTICAL RADIO CIRCUITS - PART 1 LESSON 53 - PRINCIPLES OF ELECTRICALLY OPERATED TUNES R-F CIRCUITS LESSON 54 - ELECTRICALLY OPERATED TUNED R-F AND SUPER-HETERODYNE RECEIVERSLESSON 55 - INTERFERENCE ELIMINATORS LESSON 56 - COMMERCIAL LONG AND SHORT WAVE RECEIVERS LESSON 57 - SPARK TRANSMISSION LESSON 58 - ARC TRANSMITTERS LESSON 59 - RADIO AVIATION EQUIPMENT LESSON 59-A - AVIATION RADIO EQUIPMENT FOR TWO WAY COMMUNICATION LESSON 60 - VACUUM TUBES USED IN TANSMITTING LESSON 61 - COMMERCIAL TUBE TRANSMITTERS LESSON 62 - VACUUM TUBE TRANSMITTERS LESSON 63 - SHORT WAVE TRANSMITTERS LESSON 64 - SHORT WAVE (HIGH FREQUENCY) RECEIVERS LESSON 65 - TELEVISION - PART 1 LESSON 66 - TELEVISION - PART 2 LESSON 67 - PHOTORADIOGRAMS - BEAM TRANSMISSION LESSON 68 - BROADCAST TRANSMITTERS LESSON 69 - RADIO DIRECTION FINDER OR RADIO COMPASS LESSON 70 - SOUND MOTION PICTURES LESSON 71 - SOUND MOTION PICTURES AND SOUND REPRODUCING EQUIPMENT SUPPLEMENTARY INTRODUCTION These Schematics show how to troubleshoot all the tubes and how to bring A non-working unit back to life, even if you can not read these schematics or Diagrams they are invaluable to a Service Technician working on a Older Unit. Plate Voltages are shown, Capacitor and resistor Values are show if one is Burned up or missing. All Tube Numbers are shown if a tube is missing. Speaker Field resistance values are shown to aid in troubleshooting the Speaker and Sound output. This is a High Quality, Easy to read re-production from Original Schematics. (Note: Picture shown is only an Example) ALSO: If you are looking for Old Radio Schematics, ALL Makes, All Models (US Only) I am always listing new Sets, Good Luck. Key , Tube Type Radio Course Manual CD (Remember this is a CD, You must be satisfied with its operation, no complaints yet. Copyright Reserved and CD Coded for Tracing . This is a CD and comes w/ Adobe Reader. Great CD with Thumbnails and easy to Print from.

Price: 4.75 USD

Location: Glasgow, Kentucky

End Time: 2025-02-05T00:44:27.000Z

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