Radio Broadcast (May 1928-Apr 1929)

INTERNATIONAL Short Wave Receiver This is the first receiver designed exclusively for short wave broadcast reception. Broadcast programs on short waves are remarkably clear and free from static. You can receive them on the Aero International. There is only one tuning control and the set is extremely easy to operate. The complete kit includes everything necessary to put the set together without spending another cent. Full size pictorial wiring diagrams make assembly easy. Price. .$55.30 STANDARD Short Wave Receiver The Aero Standard Three-Tube Short Wave Receiver for either A. C, or D. C, tubes utilizes a regenerative circuit which has been proven by years of excellent results in the hands of amateur operators. The same special audio amplifier is supplied as is used in the Aero "Chronophase" and other high grade broadcast receivers, so that excellent quality can be assured when receiving far-distant stations. Kit is complete with nothing else to purchase. Price $49.95 INTERNATIONAL Short Wave Converter You can receive short-wave programs on your present broadcast receiver by merely plugging the Aero International Short Wave Converter into the detector socket. It will add thousands of miles to the range of your receiver. Kit is complete and pictorial diagrams make wiring easy. Price $38.90 Short Wave Transmitter For either the man who wishes to build his first low-power transmitter and become initiated in the mysteries of "round the world" communication, or for the dyedin-the-wool amateur who wants to purchase all the parts for a high powered installation from one source. Aero Transmitter Kits offer a means of obtaining reliable parts in a circuit in which all constants are properly coordinated. Better You Can U I L D Than You Can BUY Aero "CHRONOPHASE" Here is a new five-tube receiver that sets a new standard for sensitivity, selectivity and tone quality. The new "Chronophase" principle of radio frequency amplification — the newest achievement of Aero engineers — means a range of two thousand miles under good conditions. And new audio transformers — the same as are used in some broadcasting stations — produce a fidelity of tone that is truly surprising. Either Shield Grid, A. C. or D. C., tubes may be used. You can easily assemble this receiver in one evening and have a receiver that is, in every way, vastly superior to the finest factorybuilt set at anywhere near the same price. Kit is Complete No expense has been spared to make this kit the finest you can buy. A two-tone metal cabinet, high-lighted with silver, sets off a handsome escutcheon plate of oxidized silver, beautifully engraved. The foundation unit includes everything down to screws, wire and solder leaving nothing additional to be purchased. Full sized pictorial wiring diagrams make assembly easy. Price with Cabinet $74.50 Price without Cabinet but with drilled and engraved Front Panel $68.55 State what kind of tubes you intend to use. The new 1929 Aero Green Book contains 25 circuits for receivers and transm.tters — for A. C, D. C, and Shield Grid tubes. Send 25 cents for your copy. ;rd prddui INCOR POR AT ED Dept. 288, 4611 E. Ravenswood Ave., Chicago, 111. Audio Transformers Aero Audio Frequency Transformers utilize a type of construction heretofore limited to transformers used in the line amplifiers of broadcasting stations and now made available to the public for the first time. They will positively give better results than any other audio transformer on the market. Type A. E. 770. Price $6.00 Filament Transformers Aero Filament Transformers are especially designed so that they will furnish power for 6 UY 227 tubes without any variation. This transformer will also supply power for 2 UX171-A tubes. This is equipped with a 6-foot cord and plug for ready attachment. Price $7.00 Universal Broadcast Receiving Coils Aero Universal Coils, for broadcast reception, will make any circuit better in selectivity, tone and range. All coils are twice matched at both ends of the broadcast band and thus absolute uniformity is assured. May be purchased singly or in kits for use in every type of circuit. Interchangeable Short Wave Receiving Coils Aero Interchangeable Coils have won a world-wide reputation because of their superior low-loss construction, general sturdiness and excellent electrical characteristics. These coils are of the plugin type and are furnished as complete tuning kits. Wave lengths from 16.5 to 89.5 meters are covered by these kits. No-Skip Choke Coils Modern circuits of high sensitivity demand the use of radio frequency chokes in certain parts of the circuit. The Aero No-Skip Choke is designed to have a uniform choking action over a wide range of wave lengths, including Broadcast bands and Amateur Short Wave bands as well. Many chokes have an unpleasant characteristic of showing so-called "holes" in the tuning range. This fault is entirely eliminated in the Aero No-Skip Choke Coil.