Radio Digest (July 1924-Apr 1925)

RADIO DIGES T— Illustrated January 31, 1925 ASSIGN NEW WAVES TO MANY STATIONS LESS INTERFERENCE HOPE OF RADIO OFFICIALS Thirty-Five Broadcasters on Different Lengths — List Showing Many Changes Is Given WASHINGTON. — To make room for more clsss B stations, and give more exclusive wave lengths with less interference, a number of wave assignments have been altered. So that listeners may have a record of the old and new waves, both are listed below for the thirty-five stations making the changes: Old KDKA, East Pittsburgh 32U KFDM, Beaumont, Texas 30fi KFKX. Hastings, Neb 291 KF0A, Seattle. Wash 405 KFUO. St. Louis. Mo 546 KGW, Portland. Ore 492 KOB, State College. N. M 360 KSD. St. Louis, Mo 546 KYW. Chicago 536 WBAP, Fort Worth. Texas 476 WBAV, Columbus 423 WCX. Detroit. Mich 517 WEAR. Cleveland, Ohio 390 WFAA, Dallas, Texas 476 WHA. Madison. Wis 536 WHAA. Iowa City, Iowa 484 WHK. Cleveland. Ohio 283 WHN. New York, N. Y 360 WHO, Des Moines, Iowa 526 WIP. Philadelphia 509 WJJD, Moosehcart. Ill 278 WMC. Memphis. Tcnn 500 WMH. Cincinnati. Ohio 309 WNAC. Boston 278 WNYC, New York 626 WOAI. San Antonio. Texas 385 WOAW. Omaha. Neb 526 WOC, Davenport, Iowa 484 WO I, Ames, Iowa 360 WOO. Philadelphia 509 WREO. Lansing, Mlrti 288 WSAI, Cincinnati, Ohio 309 WTAM. Cleveland, Ohio 390 WTAS. Elgin 286 WWJ, Detroit. Mich 517 New 309.1 315.6 2S8.3 435 549.1 483.1 348.6 540.1 535.4 472.9 293.9 516 364.3 472.9 535.4 498 273 360.4 522.3 509.9 302.8 503.9 325.9 280.2 528.8 394.5 522.3 498 270 509.9 288.5 325. 9 364 302.8 516 Terrell Authority on Rules WASHINGTON, D. C. — W. J. Terrell, chief of the Radio section of the department of commerce, has been asked for information concerning Radio inspection and administration in the United States by the government of New Zealand, which it is understood is just organizing its Radio work. Howe Radio Receiver $175 DO you know that you can listen to every radio broadcasting station in and around your city with a Howe Radio Receiver costing only $1.75? Thousands of folks— young and old — all over the country are having many hours of solid enjoyment listening to the wonderful and varied programs— music, talks, sport and church services. The Howe Radio Receiver is not a toy but a very sensitive, practical, radio set made of the best materials and furnished in a strong, steel case finished in a beautiful dark olive antique verde. It is fool and trouble proof. No Batteries to Buy. Guaranteed you can hear any broadcasting stations within 25 miles. One or more persons can "listen in" at the same time. For perfect local reception use a Howe Radio Receiver crystal set. For Sale Iry All Dealers Howe Auto Products Co Radio Division Chicago, Illinois RECORDS BROADCAST SPEECHES Further advance in the science of Radio broadcasting1 is inevitable— it is also inevitable that broadcasting as we know it will eventually be discarded as too crude. And so, the device shown above has been perfected to record broadcasts on wax records so that they can be stored away for future use. Radio trade in Australia is experiencing a boom, following the adoption of new regulations permitting any type of set to be used. Pierre Hemardinquer of Prance has completed a new diagram card for a standard hook-up in which certain parts are changeable. fhrald: $ NOW* Big, CiearVofce of Radio / THE same speaker that won nationwide popularity at $18, in competition with the most expensive speakers built. At the new price of $12, the Herald -B is the greatest value ever offered in Radio. The only speaker in its class with fullsized, gooseneck fibre horn, 25 inches high over all, 1 2 inch bell, art metal base. Clear, loud and delightfully mellow ! Hear the Herald before you buy! Herald Electric Co. , Inc. , 1 13 Fourth Ave. , New York Will Open Catholic Station in New York Paulist Fathers Plan Others in Chicago and San Francisco NEW YORK.— The Paulist Fathers, propagandizing organization of the Roman Catholic church, have completed plans for and are erecting a 500-watt broadcaster here for the purpose of "acquainting the public with the Catholic viewpoint on current affairs." The station will be known as WPL and will use a wave length of 405 meters. Plans of the Paulist Fathers also call for similar stations in Chicago and San Francisco. Speaking of the new station, the Very Rev. Joseph MacSorley, superior general, has said: "Our station will be the official mouthpiece of everything catholic. We want especially to reach isolated communities where there is no Catholic church. We want owners of Radio sets everywhere to be in a position to under ■ stand Catholicism and the Catholic viewpoint." Saves $50,000 Necklace NEW YORK. — A pearl necklace valued at $50,000 was saved by Radio recently when the Marquise d'Orgeix of Paris, suddenly remembered while aboard ship bound for France, that she had left the jewels hidden under a pillow in her former apartments here. A Radiogram from her located the mere baublS which was then put in safe keeping. You secure Marvelous Reception with these Scientifically Designed, New KARAS HARMONIK Audio Frequency Amplifying Transformers. What Raras Harmoniks Do That Other Transformers Cannot Do They amplify with GREAT VOLUME the extremely low frequency tones that other transformers fail to amplify at all— KARAS HARMONIKS also amplify EQUALLY all of the many vital harmonica and rich overtones that combine to form musical sounds. With KARAS HARMONIKS there is no muffling of sounds — no fuzz on the edges of words— no thin, squeaky distorted tones. Instead, EVERY tone is clean-cut, separate and distinct from every other tone — natural. The Results of Karas Harmoniks The result from any radio set of any and all efficient circuits is an outpouring from the loud speaker of 6oft, rich, round, full, mellow tones such as you have never before heard from any radio — a surprising volume of REAL MUSIC to which it is a delightful pleasure to listen. Scientific Evidence of Actnal Performance The secret of the strfkingly wonderful reception of Karas Harmonik Transformers is disclosed by this Scientific Laboratory CURVE of their actual performance. Low frequencies represent low notes — high frequencies represent high notes and the harmonics of low notes. All musical sounds are composed of a fundamental harmonic and many other harmonics and overtones of varying and successively higher frequencies. Equal Amplification It is the combination of these many harmonics and overtones forming a single note that makes it a beautiful, pleasing, musical sound. The inability of ordinary transformers to fully and equally amplify all of these many harmonics and overtones is the cause of distorted and unnatural sounding tones in the loud speaker. This Scientific Laboratory CURVE shows that Karas Harmonik Transformers amplify all sounds and all harmonics and overtones of all sounds equally — delivering to the loud speaker a pure, natdral sounding musical reception. Structural Factors That Produce the Plat Curve LARGE COILS of many thousands of turns of wire giving a very high inductance: LARGE IRON CORE offering an easy patti for the lines of magnetic force to influence the secondary windings: VERY HIGH IMPEDENCE to retain the full amplification delivered by the amplifier tubes: CONTROLLED AIR GAP insuring high amplification of low frequencies, volume-carrying, fundamental harmonics — this factor enables Karas Harmoniks to deliver more total amplification with a low ratio than cheap transformers do with a high ratio: LOW DISTRIBUTED CAPACITY Insuring full amplification of high audio frequency harmonics and overtones: LOW HYSTERESIS LOSS insuring a maximum amount of energy for amplification of all frequencies: SCIENTIFICALLY SHIELDED against intercoupling of electrostatic and electromagnetic fields: PERFECTLY MATCHED insuring the same values of amplification in both first and second stages. Price $7 Each If your dealer has not yet heen able to secure a supply they will he sent direct upon receipt of price. Karas Electric Company 4042 N. Rockwell St. Chicago, III. " "