Title :
A Radio Field-Strength Measuring System for Frequencies up to Forty Megacycles
Author :
Friis, H.T. ; Bruce, E.
Author_Institution :
Bell Telephone Laboratories, Inc.
Abstract :
The paper describes field strength measurement sets for frequencies as high as forty megacycles. The apparatus is a double detection receiving set which is equipped with a calibrated intermediate frequency attenuator and a local signal comparison oscillator. The local signal is measured by means of the intermediate frequency detector which is calibrated as a tube voltmeter.
Keywords :
Attenuation; Attenuators; Electrical resistance measurement; Frequency measurement; Impedance; Local oscillators; RF signals; Radio broadcasting; Voltage; Voltage-controlled oscillators;
Journal_Title :
Radio Engineers, Proceedings of the Institute of
DOI :
10.1109/JRPROC.1926.221056
