The radio dealer (Apr-Sept 1922)

July, 1922 THE RADIO DEALER 89 vacuum LtQtmuiiQ akhcstcR — For many years the leader in its field and decidedly the best seller with radio equipment stores everywhere— now more in demand than ever. The Brach Vacuum Lightning Arrester is built up to a standard, not down to a price. It is safe to sell it because it brings safety to the buyer. Listed by the Underwriters' Laboratories Trade Supplied by Leading Jobbers L. S. BRACH MFG. CO. NEWARK, N. J. HENLEY'S NEWEST BOOK IS WELL PREPARED The new edition of the Radio Experimenter's Handbook, by M. B. Sleeper, published by the Norman W. Henley Publishing Co., retails at one dollar, and tells — in a clear and concise way — the " Why " of radio. One purpose was kept in mind by the writer in preparing this book, and that purpose was answering the practical questions of the novice as well as the more advanced student of radio. Radio reviewing on all types of sets is clearly explained, and many helpful suggestions are given which will aid everyone. Transmitter construction is cleverly explained. Among the contents are chapters on " Setting Up and Operating a Damped Wave Transmitter," " Apparatus Used in Simple Damped Wave Receivers," " Setting Up and Operating a Simple Damped Wave Receiver," " Radio Antennas and Grounding," " Advanced Damped Wave Receiving Apparatus," " How Does an Audion Work?" "Damped Wave Audion Receiving Set," " Advanced Damped Wave Audion Receiving Apparatus," " What Is an Undamped Wave?" " Undamped Wave Telegraph and Telephone Transmitters," " Undamped Wave Receivers," "The Audion Amplifier," "Radio Rules and Regulations." RADIO ALPHABET By M. J. Klein A — is the good old Aerial part. B — is the Bakelite of mountings the heart. C — is the Coil that tuners all have. D — is for Delight that Radio gave. E — for Electrons, Science's mystery. F — for the greatest "Fad" in history. G — for the Grid that stands all the knocks. H — for the Horn — the Magnavox. I — the Inventions that make Radio great. J — for the Juice that works soon and late. K — for the Knockers, that see only gloom. L — for the Lazy ones, whose middle name is "boom." M — for the Metre, which measures the wave. N — for Natural Law, Radio's slave. O — is Oscillation, going to and fro. P — for Patents, the inventor's beau. Q — is for Curious, and Radio is that. R — is for Rotor and Rheotstat. S — is for Static, that chestnut and joke. T — is to Tune in, other wave lengths to choke. U — is Units, that all revere. V — the Voice, brought out clear. W — for Watts to measure the tone. X — is for X, the Great Unknown. Y — is for Y, spelled w-h-y. Z — is the Zeal to keep Radio high. The Editor of the Retail Advertising Department of the RADIO DEALER will be glad to receive copies of advertisements that have successfully aided retailers in building up their business. Where personal criticism is desired stamped addressed envelope should be enclosed for reply. BETTER PROFITS Selling the Jacobus Vacuum Aerial Protector HAS THE ADVANTAGES EVERYBODY WANTS Can Be Installed Inside or Outside Automatic ; will not interfere with set ; eliminates ground switch and lasts indefinitely— t h e simplest, most efficient lightning protection available. Nationally Advertised Great demand created through national radio magazines and leading newspaper radio sections of the country. Get your share of the profits. Write today for discounts. APEX ELECTRICAL SPECIALTY CO. Inc. 77 Orange St. Newark, N.J. Type J.S. W. $QOO ^List Approved by Underwriters to replace the Ground Switch MOUNTED CRYSTAL SET A durable and efficient receiving set already mounted at the low price of $7.00, list, is offered by the Detroit Radio Company, of 1 West 34th Street, New York City. This set, which they call the " ML " type, is complete for receiving. It is mounted ready for use, and comes packed in a carton. The set consists of a crystal detector, simple and easy to operate, a condenser of .005 mfd capacity, a tested galena crystal, polished brass slider, 9 inches long, and slider contact, tuning coil, with a capacity of from 200 to 600 wavelengths, end holders, nickel binding posts and screws, and a finished hardwood base. To go with the set, the Detroit Radio Company have designed an aerial outfit, consisting of 100 foot special antennae wire, hard drawn bare enameled copper insulators and guy wires. The component parts of this outfit have passed the National Underwriters' Code. This is listed at $4.00. The company also makes Navy Type Vacuum sets, which without tube and batterv, sell at a list price of $18.00. REAL SET FOR AMATEUR A receiver designed for the use of the average man or boy who knows little or nothing about radio but wishes to listen in on the radio telephone concerts and broadcasts, is being offered by the Wireless Phone Corporation, of Paterson, N. J. While this wireless set is good for the beginner, it need not be discarded when amplifiers and loud speakers are desired, the makers say.