A Five-Band Receiver for Automobile Service

Abstract

Many sections of the United States are without adequate daylight radio program service from the standard broadcast stations. These areas in the main are located in the southern part of the country, where the static level is higher and continues for a longer portion of the year, in the Rocky Mountain states where radio stations are scarce, and in New England. Many of these areas contain resorts and represent the most popular recreational areas in the country. Since automobile receivers are mobile, this particular situation becomes serious for the touring public. At the present time there are some 30,000,000 registered automobiles in the United States of which 27 per cent are equipped with radio receivers. One possibility of reception in the areas not now adequately served with broadcast stations lies in the use of short waves in the international short-wave band. This paper describes a receiver intended for this type of service. It is believed that the development of this receiver has opened up markets not heretofore available in this field. It is suggested that an economical approach to coverage of the large areas not now served by broadcast stations might be accomplished through the employment of present domestic international short-wave stations with or without directional antennas for this purpose. These stations might be operated at frequencies not usable at the time for intercontinental broadcasting.