Radio Broadcast (May 1928-Apr 1929)

Manufacturers* Booklets A Varied List of Books Pertaining to Radio and Allied Subjects Obtainable Free With the Accompanying Coupon EADERS may obtain any of the booklets listed below by ur ing the coupon printed on this page. Order by number only. I. Filament Control — Problems of filament supply, voltage regulation, and effect on various circuits. 1928 revised booklet, with circuit diagrams of popular kits. Radiall Company. 5. Carborundum in Radio — A book giving pertinent data on the crystal as used for detection, with hook-ups, and a section giving information on the use of resistors. The Carborundum Company. 12. Distortion and What Causes It— Hook-ups of resistance-coupled amplifiers with standard circuits. AllenBradley Company. 15. B-Eliminator and Power Amplifier — Instructions for assembly and operation using Raytheon tube. General Radio Company. 15a. B-Eliminator and Power Amplifier — Instructions for assembly and operation using an R. C. A. rectifier. General Radio Company. 1 7. Bakelite — A description of various uses of bakelite in radio, its manufacture, and its properties. Bakelite Corporation 22. A Primer of Electricity — Fundamentals of electricity with special reference to the application of dry cells to radio and other uses. Constructional data on buzzers, automatic switches, alarms, etc. National Carbon Company. 23. Automatic Relay Connections — A data sheet showing how a relay may be used to control A and B circuits. Yaxley Manufacturing Company. 30. Tube Characteristics — A data sheet giving constants of tubes. C. E. Manufacturing Company. 32. Meters for Radio — A catalogue of meters used in radio, with diagrams. Burton-Rogers Company. 33. Switchboard and Portable Meters — A booklet giving dimensions, specifications, and shunts used with various meters. Burton-Rogers Company. 37. Why Radio is Better with Battery Power — Advice on what dry cell battery to use: their application to radio, with wiring diagrams. National Carbon Company. 46. Audio-Frequency Chokes — A pamphlet showing positions in the circuit where audio-frequency chokes may be used. Samson Electric Company. 47. Radio-Frequency Chokes — Circuit diagrams illustrating the use of chokes to keep out radio-frequency currents from definite points. Samson Electric Company. 48. Transformer and Impedance Data— Tables giving the mechanical and electrical characteristics of transformers and impedances, together with a short description of their use in the circuit. Samson Electric Company. 53. Tube Reactivator — Information on the care of vacuum tubes, with notes on how and when they should be reactivated. The Sterling Manufacturing Company. 56. Variable Condensers — A bulletin giving an analysis of various condensers together with their characteristics. General Radio Company. 57. Filter Data — Facts about the filtering of direct current supplied by means of motor-generator outfits used with transmitters. Electric Specialty Company. 58. How to Select a Receiver — A common-sense booklet describing what a radio set is, and what you should expect from it, in language that anyone can understand. Day-Fan Electric Company. 67. Weather for Radio — A very interesting booklet on the relationship between weather and radio reception, with maps and data on forecasting the probable results. Taylor Instrument Companies. 69. Vacuum Tubes — A booklet giving the characteristics of the various tube types with a short description of where they may be used in the circuit; list of American and Canadian broadcast stations. Radio Corporation of America. 72. Plate Supply Systems. Technical information on audio and power systems. Bulletins dealing with two-stage transformer amplifier systems, two-stage push-pull, threestage push-pull, parallel push-pull, and other audio amplifier, plate, and filament supply systems. American Transformer Company. 73. Radio Simplified — A non-technical booklet giving pertinent data on various radio subjects. Of especial interest to the beginner and set owner. Crosley Radio Corporation. 76. Radio Instruments — A description of various meters used in radio and electrical circuits together with a short discussion of their uses. Jewell Electrical Instrument Company. 78. Electrical Troubles — A pamphlet describing the use of electrical testing instruments in automotive work combined with a description of the cadmium test for storage batteries. Of interest to the owner of storage batteries. Burton Rogers Company. 81. Better Tuning — A booklet giving much general information on the subject of radio reception with specific illustrations. Primarily for the non-technical home constructor. Bremer-Tully Manufacturing Company. 84. Five-Tube Equamatic — Panel layout, circuit diagrams, and instructions for building a five-tube receiver, together with data on the operation of tuned radio-frequency transformers of special design. Karas Electric Company. 88. Super-Heterodyne Construction — A booklet giving full instructions, together with a blue print and necessary data, for building an eight-tube receivei. The George W. Walker Company. 89. Short-Wave Transmitting Equipment. Data and wiring diagrams on construction of all popular short-wave transmitters, operating instructions, keying, antennas; information and wiring diagrams on receiving apparatus; data on variety of apparatus used in high-frequency work. Radio Engineering Laboratories. 90. Impedance Amplification — The theory and practice of a special type of dual-impedance audio amplification are given. Alden Manufacturing Company. 92. Resistors for A. C. Operated Receivers — A booklet giving circuit suggestions for building a.c. operated receivers, together with a diagram of the circuit used with the new 400-milliampere rectifier tube. Carter Radio Company. Radio Broadcast J Laboratory Information Sheets (Nos. 1-190) in BOUND VOLUMES Ask any news dealer for "Radio Broadcast Data I Sheets" or write direct to the Circulation Depart| ment, Doubleday, Doran & Co., Inc. See page 56 for further details. Price $1.00 95. Resistance Data — Successive bulletins regarding the use of resistors in various parts of the radio circuit. International Resistance Company. 98. Copper Shielding — A booklet giving information on the use of shielding in radio receivers, with notes and diagrams showing how it may be applied practically. Of special interest to the home constructor. The Copper and Brass Research Association. 99. Radio Convenience Outlets — A folder giving diagrams and specifications for installing loud speakers in various locations at some distance from the receiving set, also antenna ground and battery connections. Yaxley Manufacturing Company. 101. Using Chokes— A folder with circuit diagrams of the more popular circuits showing where choke coils may be placed to produce better results. Samson Electric Company. 102. Radio Power Bulletins — Circuit diagrams, theory constants, and trouble-shooting hints for units employing the BH or B rectifier tubes. Raytheon Manufacturing Company. 104. Oscillation Control with the " Phasatrol" — Circuit diagrams, details for connection in circuit, and specific operating suggestions for using the "Phasatrol" as a balancing device to control oscillation. Electrad, Incorporated. 105. Receiving and Transmitting Circuits. Construction booklet with data on 2; receivers and transmitters together with discussion of low losses in receiv r tuning circuits. Aero Products Company. In sending the coupon belo*w, make sure that your name and address are included and are plainly written. Also make sure that the listing of booklets from which you choose is that of the latest issue of the magazine, as Radio Broadcast cannot guarantee the delivery of booklets not listed in its current issue. a ™™»»™ ' »< 1,111 »» '>""»» 1 • » 1 ■" 1111 «"" mmm USE THIS BOOKLET COUPON Radio Broadcast Service Department Radio Broadcast, Garden City, N. Y. Please send me (at no expense) the following booklets indicated by numbers in the published list above; Name (Number) (Street) Address (City) (State) ORDER BY NUMBER ONLY This coupon must accompany every request. R B 1 1-28 5 1 108. Vacuum Tubes — Operating characteristics of an a.c. tube with curves and circuit diagram for connection in converting various receivers to a.c. operation with a four-prong a.c. tube. Arcturus Radio Company. 1 12. Heavy-Duty Resistors — Circuit calculations and data on receiving and transmitting resistances for a variety of uses, diagrams for popular power supply circuits, d.c. resistors for battery charging use. Ward Leonard Electric Company. 1 13. Cone Loud Speakers — Technical and practical information on electro-dynamic and permanent magnet type cone loud speakers. The Magnavox Company. 114. Tube Adapters — Concise information concerning simplified methods of including various power tubes in existing receivers. Alden Manufacturing Company. 1 1 5. What Set Shall I Build? — Descriptive matter, with illustrations, of fourteen popular receivers for the home constructor. Herbert H. Frost, Incorporated. 118. Radio Instruments. Circular "J" — A descriptive manual on the use of measuring instruments for every radio circuit requirement. A complete listing of models for transmitters, receivers, set servicing, and power unit control. Weston Electrical Instrument Corporation. 120. The Research Worker — A monthly bulletin of interest to the engineer and home builder. Each issue contains special articles on radio design and construction with special emphasis on resistors and condensers. Aerovox Wireless Corporation. , 121. Filter Condensers — Some practical points on the manufacture and use of filter condensers. The difference between inductive and non-inductive condensers. Polymet Mfg. Corp. 123. B Supply Devices — Circuit diagrams, characteristics, and list of parts for nationally known power supply units. Electrad, Inc. 124. Power Amplifier and B Supply — A booklet giving several circuit arrangements and constructional information and a combined B supply and push-pull audio amplifier, the latter using 210 type tubes. Thordarson Electric Mfg. Co. 125. A. C. Tube Operation — A small but complete booklet describing a method of filament supply for a.c. tubes. Thordarson Electric Mfg. Co. 1 26. Micrometric Resistance — How to use resistances for: Sensitivity control; oscillation control; volume control; regeneration control; tone control; detector plate voltage control: resistance and impedance coupling: loud speaker control, etc. Clarcstat Mfg. Co. 129. Tone — Some model audio hook-ups, with an explanation of the proper use of transformers and chokes. Sangamo Electric Co. 130. Screen-Grid Audio Amplification — Diagrams and constructional details for remodeling old audio amplifiers for operation with screen-grid tubes. Thordarson Electric Mfg. Co. 131. The Mershon Condenser — An illustrated booklet giving the theory and uses of the electrolytic condenser. Amrad Corporation. 132. The National Screen-Grid Short-Wave Receiver— Constructional and operating data, with diagrams and photographs. James Millen. 133. The National Shield-Grid Five — A circuit diagram with constructional and operating notes on this receiver. James Millen. 1 34. Remler Service Bulletins — A regular service for the professional set builder, giving constructional data, and hints on marketing. Gray & Danielson Mfg. Co. 135. The Radiobuilder— A periodic bulletin giving advance information, constructional and operating data on S-M products. Silver-Marshall, Inc. 136. Silver Marshall Data Sheets — These data sheets cover all problems of construction and operation on Silver-Marshall products. Silver-Marshall, Inc. 139. Power Unit Design — Periodical data sheets on power unit problems, design, and construction. Raytheon Mfg. Co. 140. Power Unit Problems — Resistance problems in power units, with informative tables and circuit diagrams. Electrad, Inc. 141. Audio and Power Units — Illustrated descriptions of power amplifiers and power supplies, with circuit diagrams. Thordarson Electric Mfg. Co. 142. Use of Volume and Voltage Controls. A complete booklet with data on useful apparatus and circuits for application in receiving, power, amateur transmitter, and phonograph pick-up circuits. Central Radio Laboratories. 143. Radio Theory. Simplified explanation of radio phenomena with especial reference to the vacuum tube, with data on various tubes. De Forest Radio Company. 144. A.C. Detector Tube. Data on characteristics and operation of 2.5-volt a.c. detector tubes. Arcturus Radio Company. 145. Audio Units. Circuits and data on transformers and impedances for use in audio-amplifier circuits, plate and output impedances and special apparatus for use with dynamic speakers. Sangamo Electric Company. 146. Receiver Circuit Data. Circuits for using resistances in receivers, and in power units with descriptions of other apparatus. H. H. Frost, Inc. 147. Super-Heterodyne Construction. Construction and operation of a nine-tube screen-grid super-heterodyne. Set Builders' Supply Company. 148. Short-Wave Receiver. Constructional and operation data on a four-tube short-wave receiver. Karas Electric Company. 149. Five-Tube Screen-Grid Receiver. Blueprint with full constructional details for building a broadcast receiver using two screen-grid tubes. Karas Electric Company. 1 so. Five-Tube A.C. Receiver. Blueprint for constructing a five-tube a.c. receiver employing the "equamatic system." Karas Electric Company. R