Radio age (Jan 1927-Jan 1928)

RADIO AGE for September New Aero Circuits Worth Investigating 1927 45 The Improved Aero-Dyne 6 and the Aero 7 and Aero 4 are destined to be immensely popular this season! Here are three new Aero circuits of unusual merit. Each is constructed around a set of improved Aero Universal Coils — the finest and most adaptable inductances ever offered! Learn about them NOW if you are interested in securing finest selectivity, greatest range and power, truest tone qualit T and best all-round radio receptn Especially designed for the Improved Aero 6. Kit consists of 4 twice-matched units. Adaptable to 201-A, 199, 112. and the new 240 and A. C. tubes. Tuning range below 200 to above 550 meters. This kit will make any circuit better in selectivity, tone and range. Will eliminate losses and give the greatest receiving efficiency. Code No. U-16 (for .0005 Cond.) S15.00 Code No. U-163 (for .00035 Cond.) 15.00 AERO UNIVERSAL TUNED RADIO FREQUENCY KIT Especially designed for the 3 twice-matched units. Co skeleton forms, assuring a 9; range from below 200 to abc to 201-A, 199, 112, and the n Aero 7. Kit consists of s are wound on Baicelite % air di-electric. Tuning /e 550 meters. Adaptable I "nivorsal An exceptionally efficient kit for us< other similar circuits. Consists of Radio Frequency Transformer and one Aero Universal 3-circuit Tuner. Uses 201-A, 112. 199 and new A. C. Tubes. Code No. U-95 (for .0005 Cond.) $9.50 Code No. U-953 (for .00035 Cond.) 9.50 A NEW SERVICE We have arranged to furnish the home set builder with complete Foundation Units for the above named Circuits and for the Chicago Daily News 4-Tube Receiver and the Aero Transmitter Set, drilled and engraved on Westinghouse Micarta. Detailed blueprints and wiring diagram for each circuit included free. Write for information and You should be able to get any of the above Aero Coils and parts from your dealer. If he should be out of stock order direct from the factory. AERO PRODUCTS, Inc. 1772 Wilson Ave., Dept. 106, Chicago, 111. Remember on your present set, or the one y< ing, you can't sacrifice the added c neatness and mechanical superiority of the MU THB STAND, HOWARD B. JONES 2226 Waban.ia Av. Chicago, 111 Radio Tabloids (Continued from page 8) It is difficult to refer to the results of broadcast advertising without mentioning specific cases which might be undesirable, but ample evidence of its efficacy is available. The manufacturer of a tooth paste, whose product sold side by side with that of competitors, put on a radio "hour." He could not fail to notice that in districts covered by the broadcasting his sales increased many fold, while in other districts they remained about the same. Similar results have been had in radio receiving sets * * * Chinese Radio Admiral W. H. G. Bullard, in an address before the National Electrical Manufacturers' Association. ADIO both for broadcasting or R small part in the Republic of China. The Chinese Government maintains a few small powered costal stations for communication with ships at sea. The importation into China of any form of radio apparatus is prohibited by decree of Chinese Government, as such apparatus is classified as munition of war, although for those who have the proper influence, the ban may be lifted. An attempt to bring in radio apparatus is not an offense and if one is caught doing so, there is no penalty nor is the apparatus confiscated; it is simply not allowed to enter, and if one is caught in one port it is usually the practice to try another port. Broadcasting as practiced in the United States is practically unknown. There is one small station in the International Settlement in Shanghai and the owner simply has to pay the police to keep away from it to allow him to continue. Recently, a change is coming over responsible officials, particularly in the Northern sections, notably in Manchuria, where the so called ruling War Lord has been convinced by one of his aids — a returned United States student — that radio broadcastng might fulfill a long felt want. In consequence, an American doing business in China has given a contract to erect a broadcast station in Mukden which is about ready to operate, fiiadkpriim-E PERFECT VARIABLE RESISTOR THIS oversize variable resistor is used as standard equipment for accurate plate voltage adjustment in Beliminators made by the leading manufacturers of the country. The scientifically treated discs provide stepless, noiseless plate voltage control, and the setting will be maintained indefinitely. Bradleyohm-E is made in several ranges and capacities to suit any radio circuit. Send for Free Folder giving7 B-eliminator hook-ups Mail the coupon below for folder describing 7 hook-ups for B-eliminators using well-known kits and parts. Ask your dealer to include Bradleyohm-E and Brad' leyunit-A for variable and fixed resistance units when you build your B-eliminator. Mail this coupon to ALLEN-BRADLEY CO. 289 Greenfield Ave., Milwaukee, Wis. Please send me your folder giving 7 B-eliminator hook-ups, and also data on all AllenBradley radio devices. tr Name ■ ■ Address