"On September 8, [1937] John V. L. Hogan, President of WQXR, conducted tests over his station which enabled listeners to determine what range of frequency or pitch could be reproduced by their receivers. The test consisted of a series of audio frequency tones from 20 to 16,000 cycles, all transmitted at the same volume level. The highest and lowest note still heard clearly gave an index of the quality of the receiver as a reproducing instrument.

"Similar tests have been held by Mr. Hogan at various times and he collects reports from listeners, thereby obtaining valuable information. If other stations were to follow his example, the industry as a whole would benefit because this would be the first time that incontrovertible proof of quality or the lack of it could be brought home to the average listener."

Source: Radio News, "How Good is Your Receiver," November, 1937, pg. 309.

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