Radio Broadcast (Nov 1926-Apr 1927)

328 RADIO BROADCAST ADVERTISER POWER SIX, KARAS, H. F. L. ADDED to the list of handsomely Veri Chromed Formica kit .. panels are now the Bremer Tully Power Six, Karas Equamatic front and sub panels, H. F. L. Nine in Line Superheterodyne with sub panel, Victoreen Universal single dial control. There are also Infradyne 7x28, and 7x30 Aerodyne, St. James 8 Tube, Bremer Tully Counterphase, Browning Drake National, Madison Moore Superheterodyne, Canfield Duoformer. They are sold by leading jobbers and dealers. Special panels cut to size and Formica tubing a are also available for Amateurs The FORMICA INSULATION COMPANY 4628 SPRING GROVE AVENUE CINCINNATI, OHIO Hear the FORMICA Orchestra Tuesday 9 to 10 over WLW ORMICX Made from Anhydrous Bakelite Resins SHEETS TUBES RODS Formica has a Complete Service on Insulating Material for Radio Manufacturers "Just Listen — The Omnigraph will do the teaching" LEARN THE CODE AT HOME with the OMNIGRAPH THE OMNIGKAPH Automatic Transmitter will teach you both the Wireless and Morse Codes— right in your own home — quickly, easily and inexpensively. Connected with Buzzer, Buzzer and Phone or to Sounder, it will send you unlimited messages, at any speed, from 5 to 50 words a minute. THE OMNIGRAPH is not an experiment. For more than 15 years, it has been sold all over the world with a money back guarantee. The OMNIGRAPH is used by several Depts. of the U. S. Govt.— in fact, the Dept. of Commerce uses the OMNIGRAPH to test all applicants applying for a Radio license. The OMNIGRAPH has been successfully adopted by the leading Universities, Colleges and Radio Schools. Send for FREE Catalogue describing three models. DO IT TO-DAY. THE OMNIGRAPH MFG. CO., 13K Hudson St, New York City If you own a Radio Phone set and don 't know the code — you are missing most of the fun Modernize Tour Set — with a Jewell A-B Relay. It relieves you of the job of switching the B-eliminator and trickle charger. It does the switching automatically with the snap of your filament switch. When the filament is turned on it disconnects the charger and connects the B-Eliminator to the electric light circuit. Turning the filaments off reverses the operation. It is very convenient. Send for Descriptive Form No. 1023 JEWELL ELECTRICAL INSTRUMENT CO. 1650 Walnut Street Chicago "26 Years Making Good Instruments" A-B Relay — It will not interfere with the normal operation of any set. Smooth — Positive — Reliable. No. 1582 List $11.00 A Conspicuously Successful B-EIiminator incorporates Dongan Radio-Power Unit No. 1582 for use with the Raytheon Tube THOUSANDS of these B-Eliminators have been built and are giving 100 per cent satisfaction. Dongan No. 1582 consists of 1 Transformer and 2 Chokes, designed in conjunction with Raytheon engineers. The Radio-Power supply is quiet, smooth and consistent all the time. Built into handsome black metal case — very durable. Complete instructions for building. Send check or money order at once. No. 147 Transformer, designed for use in connection with the output circuit, avoids the loss of B voltage due to the high resistance of the loud speaker and eliminates all risk of damage to the speaker. List $4.50 * DONGAN ELECTRIC MFG. CO. 2991-3001 Franklin St. Detroit, Mich. IACMES FLEXIBLE CELATSITE Flexible, stranded wire for point-to-point and sub-panel wiring. Non-inflammable "spaghetti" covering. In black, yellow, green, red and brown; a color for each circuit. Put up in 25-foot coils. J The Original Celatsite — a tinned, copper bus bar wire with non-inflammable "spaghetti" covering, for hook-ups. 5 colors; 30-ineh lengths. Celatsite Battery Cable —a silk-covered cable of vari-covcred Flexible Celatsite wires.f or connecting batteriestoset. Prevents "blowing" of tubes; gives your set an til orderly appearance. We also offer the highest grade of "spaghetti" tubing for TMos. 10 to 18 wires. 5 colors; 30-inch lengths. Stranded Enameled Antenna I «| Best outdoor antenna you can I [(SfiACMl~| buy. 7 strands of enameled I copper wire; maximum sur I SjvSfl face for reception. Prevents | .S ' ' jj corrosion and consequent weak signals. i Send for folder W THE ACME WIRE CO., DEPT. B NEW HAVEN, CONN. ACMEJ MAKES BETTER R A IFIRE ■jr Examined and approved by Radio Broadcast •fc