Radio age (Jan 1927-Jan 1928)

RADIO AGE for May-June, 1927 47 A Viotoreen Super has range, __ lectivity, volume and clarity. Tens of thousands of fans build Victoreen BetB every year. The results come up to full expectations. VICTOMEtf are the heart of the circuit — air core construction — tuned to 1-3 of 1% precision — use No. 170 for storage battery tubes — No. 171 for dry cell tubes. Each $7.00. Other VICTOREEN PartsRheostats. Large number of turns of wire — three terminal type. 2, 6, 10, 20, 30 ohms. Each $1.20. Potentiometers, 200, 400 ohms, $1.50. Master Control Unit. A compensating single control unit for sets using two or more condensers of equal capacity. Price $19.50. Extra condensers $4.50 each. Audio Control Unit. Three rheostatB of proper ohmage controlling detector and audio tubes. Each $4.50. \ llllllllllllllllll II A h The George W. Walker Co. \ 6528 Carnegie Ave., Dept. P, Cleveland, Ohio TT Hllllllllllllll <L Short -Wave Station 2 AG Uses Crystal Control IN A TALK given recently at Columbia University before a wellattended meeting of The Radio Club of America, C. R. Runyon, Jr., gave a detailed description of his short-wave radio station located at 544 North Broadway, Yonkers, N. Y. Seven transmitting tubes are employed, as follows : one 7.5 watt UX210 as a crystal-controlled amplifier tube; two more of the same type in the first intermediate amplifier: still greater amplification through the medium of two 50-watt tubes (UV203A) in a second intermediate stage of push-pull amplification ; and a final stage of amplification employing two 250-watt tubes (UV-204-A) in a push-pull amplifier circuit. The output of this powerful amateur short-wave transmitter is radiated from an antenna system which is suspended from the top of a 112foot mast which is erected in the rear of Mr. Runyon's home. A counterpoise is employed to increase the efficiency of this station. Quick, easy tuning— more volume, clear neu, stability, with an X-L VARIO DENSER in your circuit Endorsed by axperta, specified in all latest end best hook-ups. MODEL "N" Correct tube oscillation on all tuned radio frequency circuits, with slight turn. Neutrodyne. Browning-Drake, etc. — capacity range 1.8 to 20 MDF. PRICE *1.00. MODEL "G" Grid dips obtain proper grid capacity on Cockad&y circuits, filter and intermediate frequency tuning in heterodyne, positive grid bias on all sets. Capacity ranie Model G-l .00002 to .0001 MDF. Model G-5 .0001 to .0005 MDF. Model G-10 .0003 to .001 MDF. PRICE tl.50. PUSH POST, Push It down with your X-L Radio Laboratories 2424 N. Lincoln Ave.. Chicago, HI. REE RADIO MAP Size 28x33 inches with rule for measuring distances. List of radio stations, _ with call letters, and wave length, FKEB if you send us name and addresses of five friends who have radios and what ;kind. A. V. VIKING. 124 W. Austin Ave. CHICAGO TRAVEL FOR "UNCLE SAM"-$154 to $225 MONTH Railway Poetal Clerks Men. Boys. 18 up. Steady work. See yoar country. Hotel allowance. Common Education sufficient. Write Immediately for free 3S-PMW book, with fuU partlca 00 'iNSTITUTE* Dept. J319 ROCHESTER, N. Y Radio's Greatest Publication The March issue of the CITIZENS RADIO CALL BOOK is just off the press. This issue contains a wealth of live radio information, including a complete and up-to-date list of all broadcasting stations in the world, showing schedules, wave-lengths, etc., a wonderful picture section of 150 radio celebrities, a new department known as Ampere Andy's Assistors, giving the latest shop hints, showing illustrations how to maintain and repair your receiver. The following receivers are featured in this issue: The Camfield Super-Selective Nine, the Lodge "N" Receiver, the "Phasatrol Five" Receiver, the Citizens "Super' Eight, an Impedance Coupled SuperHeterodyne, a Self-Modulated Oscillator, the Victoreen Universal Super-Heterodyne Receiver, a Shielded Localized Control Receiver, the Melo-Heald Super-Heterodyne Receiver, Further Notes on the Completely Shielded Six Tube Neutralized Receiver, the World's Record "Super" Nine, a Compact "B" Supply with Voltage Regulator Tube, a 30 K. C. Super-Heterodyne Receiver, the Improved Browning-Drake Receiver, a 100 K. C. Super Using Air Core Transformers, a Complete Plug-in Power Amplifier, and the Improved Nine-in-Line "Super." Also circuit section with descriptions and reviews of season's popular circuits. THE CITIZENS RADIO CALL BOOK is published four times yearly, January 1st, March 1st, September 1st, and November 1st. You may now subscribe by using the coupon below for one, two or three years and save money. By subscribing you will receive each issue by mail promptly upon date of issue. Fill in the coupon at the bottom of this page and mail at once. CITIZENS RADIO SERVICE BUREAU, Inc. C Publishers Date '. _ — 192 508 So. Dearborn St., Chicago, 111., U. S. A. Please enter my subscription for the CITIZENS RADIO CALL BOOK for □ one year, $1.75; Q two years, $3.25; □ three years, $4.50. Enclosed please find in payment for same, mailed postpaid four times yearly, January, March, September and November. Canada and Foreign $2.00 yearly. NameState... Please Mention Radio Age When Writing to Advertisers.