Design of modern radio receiving sets

Design of modern radio receiving sets

Author: Sleeper, M. B. (Milton Blake), 1896-

Year: 1922

TABLE OF CONTENTS A Loose Coupler That Does What Is Expected of It A design is given for a loose coupler with which primary and secondary windings can be used to give a wavelength range, with an ordinary 0.0003 mfd. antenna, of 169 to 1,066 meters or 179 to 2,665 meters. Page 9 Single Circuit Audion Receiver Compact and convenient, this set is admirably adapted for general reception on wavelengths from 150 to 3,200 meters, tuning in amateur, phone, commercial, and time signal transmitters. Page 13 A Real Radio Receiving Equipment Of all apparatus described in Radio and Model Engineering this 150 to 2, 600-meter regenerative receiver has been, and still is, the most popular. Criticisms have been made that the tuning is somewhat broad, and that some loss of efficiency is experienced below' 300 meters, but for phone reception and commercial stations up to time signals it is hardly surpassed by the most elaborate variometer sets. Page 16 A Real Radio Receiving Equipment The detector and 2-step amplifier described is primarily designed to be used with the 150 to 2,600 meter regenerative receiver, tho it is equally good for any type receiving set. In fact, it can be wired to a crystal re