Design of modern radio receiving sets

Design of modern radio receiving sets

by

 

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

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 receiver, such as the Areola, Jr., when loud signals are required. 

Page 21 Simple Crystal Receiver for Phone Reception Here is an excellent crystal receiver, costing less than five dollars to assemble, which, with a single wire 

antenna 100 ft. Tong and 30 ft. high, will receive phone broadcasts up to 15 or even 20 miles. 

Page 26 Radio Frequency Amplification at 200 Meters The simplest type of radio frequency amplifier is described, embodied in a set that gives astonishingly sharp

tuning. Suitable for regular 200-meter traffic, the set offers interesting possibilities for experimenting. By slightly increasing the number of turns on the coils 

phone stations can be received. 

Page 28 12,000 to 20,000 Meter Receiver European stations come in with surprising strength when an audion detector is used in conjunction with this instrument. 

Simplicity of control, without sacrifice of efficiency, is a strong point in its favor. It is an interesting set to operate, and opens a new field for the man who 

has only worked on short waves. 

Page 34 150 to 600 Meter Regenerative Receiver Another special success has been scored by this equipment. For relay work on 200 meters it is unexcelled, both 

in the matter of signal strength and tuning. The man who has experienced interference while receiving phone broadcasts or is troubled with weak signals can 

promise himself a new experience when operating this outfit. 

Page 38 Some Common Radio Problems A few answers and remedies are given for perplexities that are frequently met by the novice and experimenter. 

Page 42 Ideas for the Shop and Laboratory Suggestions are given for an oscillating wavemeter, inductance standards, and a phone bob, handy pieces of apparatus for the man who is doing experimental work. 

Page 43 Lists of Parts and Prices To describe the construction of an instrument for which parts cannot be obtained is only an aggravation. Consequently, complete lists of parts and prices are given for G. A. Standardized Supplies of which the equipment can be built. 

Page 46 Digitized by Google.

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