Quantitative Methods Used in Tests of Broad-Cast Receiving Sets

The general classes of receiving set measurement used by the authors are outlined as special engineering tests and production tests. The apparatus and methods for both are described. A new form of radio-frequency oscillator, designed for this work, is described. Shielded test booths used for receiving-set measurement work are described. The importance of care in selecting the conditions of test used in making quantitative measurements on a receiving set is emphasized.