Radio Broadcast - 1925, February - 113 Pages ... - VacuumTubeEra

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848-n RADIO BROADCAST ADVERTISER It HasThe Full Sweet ^Resonance Of Our Upright Horn The new cabinet model has a seasoned wood horn which is "full floating" the outer end, or bell, does not touch the cabinet. This, together with a long expansion chamber, gives it that same freedom of vibration which goes to make the Bristol horn type Loud Speaker such a resonant, sweet-toned instrument. It also has the same high-grade electromagnetic sound mechanism. It is not only a handsome piece of furniture, but a speaker worthy of the best radio set that money can buy. Both Horns are Free to Vibrate Like the Open Diapason of the Organ. ModelS Audiophone $25.00 Rubber horn 14J" in diameter. Cast metal throat. Velvet mat finish of mottled bronze and gold. There are five Bristol Loud Speakers, priced from $12.50 to $30.00. If not at your dealer's, write for Bulletin No. AH-3020. Cabinet Model $30.00 Beautifully finished mahogany. Full floating wooden horn and cast metal throat. Musically, a companion to the finest set ever built; size 17 x 10 x 10 J". Bristol * Loud Speake: f&aterbury, Connecticut INSTRUMENTS Tested and approved by RADIO BROADCAST
Tested anrl nnnrovpfl hv R \nin RRmnr AST RADIO BROADCAST ADVERTISER 848-o Two Towers As the Eiffel Tower stands as a monument to skilled engineering construction so TOWER'S Scientific phones stand as a monument to supreme radio achievement. 5 Each phone is carefully tested and ap* proved before it leaves the factory by a Government Licensed <strong>Radio</strong>Operator thus guaranteeing perfection in tone quality with a positive uniformity of volume. TOWER'S Scientific Headsets are guaranteed to be made of the best materials money can buyhighest test enamel, insulated magnet wire, best grade five-foot tinsel cord, unbreakable caps, polished aluminum cases using the famous scientific headband constructed for maximum comfort. If your dealer cannot supply you, order direct, we will ship immediately Parcel Post C. O. D. THE TOWER MFG. CORPORATION 98 BROOKLINE AVE. Def*. T BOSTON. MASS. ^w ^wtfTr^ii=BPw fSWf (J^^W/fi; S * - ^l^15 $ ^ " *' ' te^SX^sS!^1 .. g. jj One of the seven wonders of the J $ world. The Eiffel Tower built &*- in 1887-89 on the Champ-de-Mars fr* /jf contains 3 stories. Reached by a **"" series of elevators, the platform at the top being 985 feet above the ground. In the top story is located the powerful <strong>Broadcast</strong>- Ing Station F L. The Worlds Greatest Headset Value xjy '
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RADIO ol. 6, No. 4 February. How Mi
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( , me How Michael Pupin Succeeded
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How Michael Puj3ih' Succeeded "665
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The Way of the Transgressor 667 or
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The Way of the Transgressor 669 ver
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What Reflex Means How One Tube is M
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What Reflex Means 673 might be expe
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: crystal ! toward : this What Refl
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The International Radio Broadcast T
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The Listener's Point of View 685 CA
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The Listeners' Point of View 687 SI
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The Listener's Point of View 689 [p
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f syncopation The Listeners' Point
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! of ; an Some Experiences With the
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The March of Radio 695 communicatio
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The March of Radio 697 tial product
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The March of Radio 699 PROMINENT FI
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The March of Radio 701 It might be
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The March of Radio 703 year the Phi
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The March of Radio been bothered by
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Who Owns Our Broadcasting Stations
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Who Owns Our Broadcasting Stations
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"NOW, 1 HAVE FOUND. . A Department
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' . THIS "Now, I Have Found. 713 JO
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. "You Our Busiest Dav 7'5 Follette
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THE LOSS STABILIZING R. F. CIRCUITS
Page 61 and 62: eceiving In the R. B. Lab. 719 It i
Page 63 and 64: In the R. B. Lab. 721 This resistan
Page 65 and 66: How to Build a One-Dial Reflex Rece
Page 67 and 68: How to Build a One-Dial Reflex 725
Page 73 and 74: THE ANTENNA AT STATION 5IT, BIRMING
Page 75 and 76: What We Are Doing With Broadcasting
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Page 79 and 80: A Winder for Small Inductances How
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Page 85 and 86: Problems of Receiver Design 743 sho
Page 87 and 88: Our HAT , Readers Write Us A Word f
Page 89 and 90: The Grid 747 structed as a portable
Page 91 and 92: RADIO BROADCAST ADVERTISER 749 Set
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Radio Broadcast - 1925, February - 113 Pages ... - VacuumTubeEra

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