Radio Broadcast (May-Oct 1922)

RADIO BROADCAST ADVERTISER Just Off the Press The Radio Experimenter's Handbook By M. B. SLEEPER Gives wiring diagrams and hookups, explains the theory and operation of damped and undamped transmitting sets, and receiving equipment. Ths book is profusely illustrated. Tells you the things you want to know about wireless in simple, untechnical language. In this respect, it differs from most radio books in that it tells you what you want to know, and not what the author thinks you ought to know. 16 chapters. Fully illustrated. Price $1.00. Other Popular Radio Books Radio Hook-Ups, by M. B. Sleeper $ .75 Iiitiispensable to the radio amateur who designs or builds his own receiving apparatus. Radio Design Data, by M. B. Sleeper. .75 Gives tables and data for designing, receiving and transmitting apparatus. Construction of New Types TransAtlantic Receiving Set, by M. B. Sleeper 75 Tells how to listen to the high-power telegraph stations of foreign countries. Construction of Radiophone and telegraph Receivers for Beginners, by M. B. Sleeper 75 Tells in detail the building of radio apparatus. How to Make Commercial Type Radio Apparatus, by M. B. Sleeper .75 Describes in detail many commercial types of transmitting spark and vacuum lube sets, both telephone and telegraph and receiving equipment of all kinds, A B C of Vacuum Tubes Used in Radio Reception, by E. H. Lewis. . 1.00 A book explaining in detail all about vacuum tubes. Experimental Wireless Stations, by P. E. Edelman 3.00 A book describing all modern improvements. Wireless Telegraphy and Telephony Simply Explained, by A. P. Morgan 1.50 A book the radio experimenter cannot aiford to be without. FREEI Caialogtie of Wireless, Automobile and Olher Books Sent Free on SUPPLY DE.4LERS. Write for special terms. The Norman W.Henley Publishing Co. 2 West 45th Street, New York "East and West, the Globe is Best" GLOBE RADIO HEAD PHONES 2200 ohms Highly sensitive Matched receivers Natural in tone Each receiver tested by radio Light weight (11 oz.) Comfortable to wear Will not distort signals, when amplified Articulation perfect List price only $9.00 There are many types of head sets on the market but not too many good ones. The GLOBE RADIO HEAD SET incorporates a knowledge of acoustics based on nearly fifteen years of experience in making high grade sound producing and receiving instruments. It embodies correct design with the best of materials. The Globe Phones are for those who discriminate. Ask about the Globe Antenna Attachment Plug for connecting your radio set to your electric light circuit. Buy from your local dealer, or write us direct. GLOBE PHONE MFG. COMPANY READING, MASSACHUSETTS, U. S. A. **Uiiited" Radio Products "United*' Audio Frequency Transformers Two finishes : Black Enamel or Buffed Nickel Plated, §4. 50 The beauty of the outside of this transformer is but a reflection of the superb workmanship under the shell — -no howling — no distortion — clear amplification for one or more stages. United Mfg. & Distributing Co. 536 Lake Shore Drive Chicago Illinois "United" Variable Condensers Prices 43 plate, §4.50 ; 23 plate. §1.00; 11 plate. $3.50; 5 plate, $2.75 ; 3 plate. $2.25, without dial or knob. That "United" Condensers have become the standard with manufacturers of railio sets, by which all others ar3 judged, is, in itself, the strongest endorsement of their superior construction and effectiveness. Ask your dealer to show you this condenser. Then, you, too. will appreciate why it has been accepted as the stamiurd. Mounting made easy hy our template for locating panel holes, packed free ivith each condejiser. NOTE: Auy a<iv with Its to Sill v'nr rtimd claim uf havinij an arrantjtnii prodnctx at sptrial piicis. is fraiidiih