Radio Broadcast (May 1927-Apr 1928)

Record Details:

Title:
Radio Broadcast
Date:
May 1927-Apr 1928
Publisher:
Garden City, N.Y., Doubleday, Page & company [etc.]
Volume:
Radio broadcast ..
Leaf #:
000698
Language:
English
Subjects:
radio periodical, Radio -- Periodicals
Contributor:
Library of Congress, MBRS, Recorded Sound Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Radio Broadcast supported home listeners of the new technology of radio – for building or buying a receiving set to explaining the technology used by the new radio stations. Throughout the magazine shows the cultural influence of radio as it evolved from hobbyist to mainstream. -- David Pierce, 2011
Date Added:
September 29, 2022
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G oncomitants THE AMPLION "GRAND" AS PLEASING to the eye as to the ear is this magnificent loud speaking device by Amplion. Contrary to what one might justly suppose upon first glance, the "Grand" does not use a horn inconceivably munificent in inches, but employs a combination cone and sound board. The "Grand" fists at $145.00. It is supplied with a 20-foot cord. The walnut cabinet measures 34"x33"x 18" BY PACENT TTERE is a seven teeninch cone loud speaker with several interesting features. Its extreme ruggedness and responsiveness to weak signals are features. The manufacturer claims that this cone has a thirty per cent, greater frequency coverage and sensitivity than most of the popular model cones on the market. Price, $22.50 TO THE LEFT TS A new power cone loud speaker employing electrodynamic principles. Due to its unique construction, great volume may be handled without any possibility of rattling. An external source of direct current is necessary for operating this instrument. Either the storage battery or the electric light mains may be employed for this, depending upon which type of loud speaker is used. If the storage battery is employed, the current drain will not exceed that usually drawn by a 171 type tube. The price of the "Aristocrat" is $85.00 for storage battery operation or $90.00 for 110-volt d. c. operation THE MAGNA VOX "ARISTOCRAT' DESIGNED FOR HEAVY-DUTY WORK THERE are four voltage taps on this new B supply device by National, three of which are adjustable. The detector voltage is from 22 to 45; the r.f. voltage, from 50-75; and the a.f. voltage from 90-135. The power-tube voltage tap delivers 180 volts. Price, with cord, switch, and plug, $40.00. Rectifier tube, $5.00 230