Radio broadcast .. (1922-30)

INDEX—Continued PAGE Data on the ux-222 (cx-322) 384 Ear, The 318 Exponential Horn, The 446 Fading 242 Filter Choke Coils 387 Filter Condensers 450 "Gain" 148 Grid Bias 387 How the Plate Circuit Affects the Grid Circuit 387 Inductive Reactance 58 Loud Speakers 146 Modulated Oscillator, A 316 Obtaining Various Voltages from a B-Power Unit 60 112,171, and 219 Tube Curves 314 112-A and 171-A Type Tubes, The 238 Operating Vacuum Tubes in Parallel 56 Oscillation Control 150 R. F. vs. A. F. Amplification 448 Regulator Tube, The 386 Resonant Circuits 318 Selectivity and Sensitivity . .. 384 Simple Wavemeter, A 386 Single-Control 150 Solenoid Coil Data 60 Speech 150 Standard and Constant- Frequency Stations 238 Table for Wavelength- Frequency Conversion 240 Testing Receivers 316 Three-Tube Roberts Reflex... 242 Three-Tube Roberts Reflex, The 242 Transmission Unit, The 60 Tuning 450 Type 280 and 281 Tubes. The 450 Unit of Capacity, The 56 Wave Traps 240 Wavelength-Frequency Con- version 240 *Laboratory, "Strays" from the 228, 310, 427 "Langley, Ralph H 225 Limitations to the Use of High-Frequency Channels 347 "Listeners—Guests or Customers? (John Wallace) 37 "Listeners' Point of View, The (John Wallace) 37, 140. 219, 306, 365, 419 Listeners Served by Reallocations, Rural Radio 279 *Loftin-White Receiver, An A. C. (John F. Rider) 438 *Loud Speakers 126 *Loud Speakers and Power Equipment 22, 373 *Loud Speakers and Sets, Some New. . 358 "A/TAKE Your Own Radio Picture 1VJ. Receiver (Austin G. Cooley). .. 114 Manufactured Receivers, "Radio Broad- cast's Directory of .... 70, 154, 246,322,388 Manufacturers' Booklets Available 62, 152, 244, 320, 392 *March of Radio. The 14, 105, 198, 278, 346, 406 *Matching R. F. Coils (F. J. Fox and R. F. Shea) 308 "Measuring the "Gain" of Your Radio Receiver (Keith Henney) 123 *Meters, Kilocycles, or "Channel Num- bers"? (Ralph H. Langley) 18 *Modern Radio Receiver, Refinements of the (Edgar H. Felixi 26 Monopoly Rule the Radio Commission ? Does 346 Month in Radio, The 17, 108, 349 *Month's New Phonograph Records, The 441 '"Motor-Boating," No (H. O. Ward) 433 *XTEW A Power Unit, A (Ralph Bar- 350 1 > clay) New Commissioner Appointed 281 *New Recordings by Radio Favorites 289 *New "Two-Ten" Power Amplifier, A (William Morrison) 138 PAGE News of the Patent Field 16, 108 *No "Motor-Boating" (H. O. Ward).. 433 *"NR-60" Was Engineered, How the (John F. Rider) 299 *PlCTAMONIC" Circuit, The R. G. vJ S. (David Grimes) 39 $100,000 to Improve Broadcasting 107 "Operating Your Rayfoto Picture Re- ceiver (Austin G. Cooley) 296 *Our Readers Suggest ..." 35, 131, 213, 293, 363, 421 *Output, Constant B-Device (G. F. Lampkin) 304 *Output Device? Why the (Keith Hen- ney) 294 * PATENTS: Can the Serious Problem of Radio Patents Be Settled? 198 Patent Field, News of the. ... 16, 108 Prospects for Patent Pooling . . 15 Prospects of a Patent Pool, The 198 *Phonograph Joins the Radio Set, The - 112, 206 *Phonograph Records, The Month's New 441 Picture Broadcasting Becomes a Practical Reality 406 *Picture Broadcasting Station, CJRM, Pioneer (Edgar H. Felix) 362 *Picture Receiver, Make Your Own Radio (Austin G. Cooley) 114 *Picture Receiver, Operating Your Rayfoto (Austin G. Cooley) 296 *Picture Receiver, Why I Installed a Cooley (Edgar H. Felix) 215 Political Pressure on the Commission, The Growing 347 Possibilities of Still Picture Broadcasting 406 *Power Devices 127 *Power Equipment, Loud Speakers and 373 *Power Supply Accessories, Some Re- liable Radio 293 *Po\ver Unit, A New A (Ralph Barclay) 350 *Programs, A Fantasy on Sponsored (John Wallace) 306 *Programs Going in the Wrong Direc- tion? Are (John Wallace) 219 *Push-Pull Amplification—Why? (How- ard E. Rhodes) 202 *Push-Pull Amplifier and B Supply, An A. C. (J. E. Coombes) 287 * DUALITY Five-Tube A. C. Re- \,f. ceiver, A (James Millen) 135 *T~). G. S. "Octamonic" Circuit, The JA. (David Grimes) 39 Radio Beacon Works, How the 108 "Radio Broadcast's" Directory of Manufactured Receivers 70, 154, 246, 322, 388 "Radio Broadcast's" Laboratory In- formation Sheets (See Laboratory) 56, 146, 238, 314, 384, 446 Radio Commission, Action from the .... 15 Radio Commission Can Set Radio to Rights, How the 105 *Radio Education, University Offerings in (Carl Dreher) 339 Radio Engineering To-day 16 * Radio Enlists the Helium Atom (Vol- ney G. Mathison) 195 *Radio Favorites, New Recordings by 289 *Radio Folk You Should Know 225, 286, 440 *R. F. Amplifier, Designing an (Sylvan Harris) 376 *R. F. Coils, Matching (F. J. Fox and R. F. Shea) 308 Radio Industry, Inside the 281 "Radio Industry" Standards 107 "Radio Interference, Suppressing (A. T. Lawton) 48, 217, 379 *Radio Picture Receiver, Make Your Own (Austin G. Cooley) 23 "Radio Receivers for $175 or Less 19 "Radio Receivers Representing a Wide Price Range 302 PAGE *Rayfoto Picture Receiver, Operating Your (Austin G. Cooley) 296 *"Rayfoto" System Works, How the Cooley (Austin G. Cooley) 23 Rayfolo Transmission, The First 348 *Receivers and Their Chassis, Some Fine 226 Recent Radio Articles, A Key to (E. G. Shalkhauser) 76, 255 *Refinements of the Modern Radio Re- ceiver (Edgar H. Felix) 26 *Roberts, Walter Van B 286 Rural Radio Listeners Served by Real- locations 279 *QCREENED-GRID Receiver, A O Four-Tube (McMurdo Silver) .. 35o *Screened-Grid Tube, The (Keith Hen- ney) 208 *Screened-Grid Tube, The (The Labora- tory Staff) 282 *Set Shall I Buy? What (Edgar H. Felix) 211 "Shielded Six, The Improved (John E. McClure) 44 Short-Wave Notes 331 "Short-Wave Phone and C. W. Trans- mitter, A (Kendall Clough) 410 Short-Wave Spectrum, The Shrinking 407 *Some Fine Receivers and Their Chassis 226 "Some New Loud Speakers and Sets 358 "Some Reliable Radio Power-Supply Accessories 293 South Has Few Stations, Why the 107 Standards, "Radio Industry" 107 ""Strays" from the Laboratory228, 310, 427 "Super-Heterodyne, A 45 kc. A. C. (Dormand S. HUD 274 "Suppressing Radio Interference (A. T. Lawton) 48, 217, 379 Synchronization Schemes, The Com- mission Suggests 199 ""Synchrophase" Seven Was De- veloped, How the (John F. Rider).. 232 "TECHNICAL Radio Problems for J- Broadcasters and Others (Carl Dreher) 311 "Television in Europe (William J. Brit- tain) 103 "Testing A and B Power Units (Howard E. Rhodes) 443 Two Stations Cannot Occupy the Same Ether Space 348 ""Two-Ten" Power Amplifier, A New (William Morrison) 138 "TTNIVERSITY Offerings in Radio U Education (Carl Dreher) 339 "T 7-ACUUM-TUBE Voltmeter, A V (The Laboratory Staff) 221 TTT'EAF Transmitters, The New 108 rr "What B Device Shall I Buy? (Howard E. Rhodes) 120 What Broadcasters Want 107 What Can the Commission Do? 105 "What is a Good Radio? (Keith Hen- ney) 28 What is the Matter with Radio Advertising 14 "What's the Trouble with Aircraft Radio? ("Anonymous") 11 What Is the True Broadcasting Situation? 346 What Kit Shall I Buy? 66, 170, 257, 330, 393 What Readers Say About Broadcasting Conditions 200 "What Set Shall I Buy? (Edgar H. Felix) 211 What to Tell the Consumer—And Where 107 Who Buys This Year's Radio Sets ? 279 "Why I Installed a Cooley Picture Re- ceiver (Edgar H. Felix) 215 "Why the Output Device? (Keith Hen- ney) 294 Why the South Has Few Stations 107 Will the Radio Industry Do It Again ? . 349