Radio age (Jan 1927-Jan 1928)

RADIO AGE for September, 1927 41 "A" POWER UNIT ^ For economy — service — lasting satisfaction — there are no finer Power Units made, even at twice the price. Thousands of satisfied users back this statement. See for yourself. "A-B" Unit has variable control with 40 milliamperes capacity at 135 volts. "A"Unit has Westinghouse electrical equipment. Both operate on 50 or 60 cycles at 110 volts A .C. Send No Money ^M^e will ship day order is received, by express C. O. D. subject to examination on arrival. 5% discount if cash is sent with order. Modernize your set at 50% saving. Send today. 1219 So. Wabash Ave., Dept. 31, CHICAGO, ILL. Station WSBC owned and operated by World Battery Company Marvelous power and selecti if " 'flafa _ me of our many mighty bargains. FREE Log and Call Book , and Big New Catalog— just off the press. Full of / Radio Bargains. Send for your free copy now I American Auto & Radio Mfg. Co. Harry Schwartzr-erg, Pres. Cilr. Mo. Permits just the right amount of filament current— no more, no less, while sufficient current is there — for each tube's best individual performance. I Insist on Amperite. Nothing else will do.Eliminates hand rheostats. Simplifies wiring. Send for FREE Radiall Book Fully explains Amperite operation. Gives seasons most popular Hook Ups and valuable Construction Data. Address Dept. RA9 RADIALL CO., 50 Franklin St., N.Y. Price $1.10 complete (in U.S.A.) Sold Everywhere 7he "SELF-ADJUSTmG"/?/awfctf October Supers Get the October Radio Age for three good circuits. Frank D. Pearne Readers of Radio Age, and all radio constructors who have been following the development of radio since the early days of broadcasting will learn with poignant regret of the passing of Frank D. Pearne in June. Mr. Pearne was found lifeless at the wheel of his car in a garage near his home in Chicago. Mr. Pearne had been suffering from heart trouble and had been planning a long rest. His funeral was directed by Masonic brothers and was an impressive ceremony, attended by a large number of personal and professional friends who admired and loved Mr. Pearne for his sturdy character, his unfailingkindness and his important contributions to the art of radio transmission and reception. Simultaneously with the inauguration of popular broadcasting in 1922 Mr. Pearne became a friend of those who wanted to know how to build sets. He had been instructor in electricity at Lane Technical High School for more than ten years at that time and was already familiar with the practice and theory of radio. His forte was the helping of beginners. Thousands of readers of Radio Age in 1922 and 1923 depended upon Mr. Pearne to help them over the rough spots. His articles and drawings appeared in Radio Age regularly and he was technical editor of this magazine, as well as technical editor of the Chicago Herald and Examiner. The editor of Radio Age has probably a better knowledge of the unselfish work performed by Mr. Pearne in behalf of radio beginners than has any other person, except probably Mrs. Pearne. She many times had to protect Mr. Pearne from the hundreds of persons who called his residence by telephone by day and night, threatening to deprive him of needed rest and of time for his high school work. No letter was too insignificant for this friend of radio. He answered all queries personally, giving the same time and careful thought to the reply to the small boy who was experimenting with crystal sets as he gave to the TRANSMITTING APPARATUS A Complete Stock at "Chi-Rad" In addition to our regular broadcast apparatus we carry a very good stock of transformers, chokes, grid leaks, high test condensers, etc., for transmitting purposes. NEW SHORT-WAVE COILS Specially built by "Chi-Rad". Write for descriptive bulletin and catalog. Dealers and setbuilders please use business letterhead when writing for discounts. CHICAGO RADIO APPARATUS CO. 415 So. Dearborn St., Dept. RA, Chicago Magnaformer Set Builders, be first — send NOW for the NEW Magnaformer 9-8 Hookup. The Commaniler-inChief of 1928 Circuits. Now being featured in the Radio Magazines. The very last word in Receivers. Two years ahead of field in Design and Performance. Amazing tone quality. A fiend for distance. Double amplification each'R. F. stage. A world of volume. No interference. Its equal has never been achieved. A beautiful looking job. Easy to build. Just the set to build for yourself or for others. instructions and detailed Full size circuit blue prints and NOVEL inp diagram complete winner instructions and ' story of development and accomplishments of former, the perfecl Long >.\ ive Transformer sent a for 10 cents 'SEND NOW. Be first. RAOIART LABORATORIES COMPANY 19 S. La Salle Street Dept. 76, Ch md Loudspeaker Consoles WINDSOR FURNITURE COMPANY 1416 Carroll Avenue, Chicago, Illinois Los Angeles Branch, 917 Maple Ave