Radio age (Jan 1927-Jan 1928)

RADIO AGE for October, 1927 37 New Aero Circuits Worth Investigating 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 oircuits of unueual 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 quality and best all-round radio reception. AERO UNIVERSAL TUNED RADIO FREQUENCY KIT Especially designed for the Improved AERODYNE 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. TJ-16 (for .0005 Cond.) $15.00 Code No. U-l (for .00035 Cond.) 15.00 Especially designed for the Aero 7. Kit consists of 3 twice-matched units. Coila are wound on Bakelite skeleton forms, assuring a 95% air di-electrio. Tuning range from below 200 to above 650 metere. Adaptable to 201-A, 199. 112, and the new 240 and A. C. Tubes. Code No. U-12 (for .0005 Cond.) $12.00 Code No. U-123 (for .00035 Cond.) 12.00 AERO FOUR KIT An exceptionally efficient kit for use in the Aero 4 and other similar circuits. Consists of one Aero Universal Radio Freaueaoy Transformer and one Aero Universal 3-oircuit Tuner. Uses 201-A, 112, 199 and new A. C. Tubes. 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 in foundation units free. Write for information and prices. 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. advanced circuit, steel chassis totally sh Balanced parts of best quality. Are You Fit to Be an Aviator? (Continued from page 23) aviators have found protection in a powder puff sewed in each flap of the helmet. Sound Nervous System Necessary Defects of nerves constitute the commonest causes of accidents and removal from flying status. Army and Navy fliers are subjected to a psychoanalytic test. By a complete study of the personality and a review of the entire life, the tendencies, resistances and potentialities of the nervous system can be 'determined. Therefore, when you go for your examination a conversation like this will be in order: "What is the first, the very first memory you have?" "I remember falling off the garden fence," answers the would-be aviator. "Do you find yourself thinking of falling when you are on high places?" asks the examiner anxious to follow up and unearth a possible complex. "No, never." "Well, how about your early life in school? Did you enter into all games? Did you engage in fist fights with your playmates ?" So the questions go. The trends and reactions to stresses in the past life form the basis of a prophecy of the probable reactions to the stress of flying. Much has been written about the abstinent, non-drinking, non-smoking life of Lindbergh. His cool-headedness was proved long before he hopped the Atlantic by no less than four parachute jumps from unmanageable planes. Such quick reaction time is essential in a flyer. There is often a situation where almost automatic reaction is necessary. Reaction includes coordination of complicated arm and leg movements. Chilling Must Be Prevented It is necessary to prevent body chilling. Clothing is a most essential consideration. It varies according to the flight undertaken. Altitude, weather conditions and the degree of protection afforded by the type of plane are all to be considered. The temperature drops five degrees Fahrenheit for 1,000 feet of altitude. At thirty to forty thousand feet a temperature of seventy below zero is encountered. The body must be kept surrounded with warm layers of air between several layers of loose-fitting wool or silk. The mesh and not thickness prevents heat loss. Freedom of movement is essential and ready removability must be insured by a metallic rip arrangement. A thin layer of cold cream on the face is a marked protection. Adequate physical exercise is necessary for every one and indispensable for fliers. During the war physical trainers were attached to all aviation units and sports and games were part of the daily routine. A good athlete has much toward becoming a good aviator. Eye and limb coordination mental alertness, high efficiency in respiration and circulation and morale are all to be gained by enjoyable exercise. The tone of thoracic and abdominal muscles is increased and metabolic activity of the tissues stimulated by swimming, rowing, golf, RADIO'S Greatest Triumph The Melody Ship You can put these ship model loud speakers together in a few hours of pleasant pastime You need not know anything about ship building or loud speakers to assemble one of these models. As a matter of fact if you have never seen a ship you can put the ship model loud speaker together in a few hours by following our diagrams and instruction sheet which is so written that a school boy can understand it. All you need is a small hammer. The parts are numbered on the diagram to make the process even more simple. As long as you can understand such instructions as these (actually taken from assembling chart that is included with every model) you cannot fail: "Take No. 57, place it in front end of No. 56 and tap lightly with hammer. Next take No. 58 and place it up against No. 57 and tap with hammer to bring it into place." Easy? Nothing simpler. The instructions are just like that from the beginning to end. Do this and that — and before you realize it a beautiful model has grown before your eyes. The MELODY SHIP is made entirely of wood. A positive free edge cone speaker with a unit of the electro magnet type, powerful enough to operate a 72-inch cone, is attached to the mainmast. This insures splendid service and ample volume with no distortion. The loud speaker is made in the shape of a sail and does not alter or change the appearance of the ship in any way. The sails are artistically painted with the various designs and figures of the period represented by the models. The tone of this loud speaker is far superior to any cone of its size on the market today. This isjmade possible by our patented_,melody sail. Write for our beautiful illustrated catalog. Fill in the coupon below and we will act upon it immediately. Miniature Ship Models, Inc. 3818-20-22-24 Baring Street Philadelphia, Pa. Canadian Branch 1485 Bleury St. Montreal, Canada MINIATURE SHIP MODELS, INC., DEPT. Z 3818-20-22-24 Baring St., Phila., Pa. Please send me the complete parts, for the loud speaker ship model cut to fit, and ready to assemble for the La Pinta as shown above. I will pay postman $12.50 plus postage (a few cents). PLEASE PRINT NAME AND ADDRESS PLAINLY Name.. _ Street or R. F. D City State.