Journal ArticleDOI
Resonant Lines for Frequency Control
TLDR
In this article, the general principles of the design of concentric conductor lines and means for compensating temperature changes are discussed, and the line controlled oscillators may be used with frequency multipliers, or to control oscillators at lower frequencies.Abstract:
Vacuum tube oscillators for radio frequency signals above 25 megacycles may be controlled with a high degree of precision by resonant lines, and at lower frequencies may be used to obtain a larger power output than is obtainable from crystal oscillators. The general principles of the design of concentric conductor lines and means for compensating temperature changes are discussed in this paper. Line controlled oscillators may be used with frequency Multipliers, or to control oscillators at lower frequencies.read more
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Journal ArticleDOI
Resonant Lines in Radio Circuits
TL;DR: In this paper, the mathematical relations governing their operation and several applications are discussed, including the use of the lines as circuit elements in the ultra-short wave range as a means of obtaining high impedance with low loss, where the lines may be either concentric tubes or 2 wires, and are sufficiently small that they may be placed within the apparatus.
Journal ArticleDOI
Transmission Lines for Short-Wave Radio Systems
E. J. Sterba,C. B. Feldman +1 more
TL;DR: In this paper, the requirements imposed on transmission lines by short-wave radio systems are discussed, and the difference in the requirements for transmitting and receiving purposes for both transmitting and reception purposes is emphasized.
Journal ArticleDOI
New Methods of Frequency Control Employing Long Lines
TL;DR: In this paper, the advantages of using crystal oscillators as frequency standards and the economies and reliability of long line transmitter frequency control are discussed for short-wave transmitters, and a method is given for obtaining both the advantages and reliability for long line transmission lines.
Journal ArticleDOI
Short-Wave Commercial Long-Distance Communication
TL;DR: In this paper, the development of short wave communication by the Radio Corporation of America is outlined and a summary of short-wave installations, with call letters, wave-lengths and services to which each installation is assigned, is submitted.