Kellogg Model 501 Double-Button Carbon Microphone

Kellog Microphone-Front View

The Kellogg Model 501 microphone was of the double-button carbon type, and was intended for use in broadcast applications in the late 1920's.  The microphone is shown installed in the appropriate Kellogg desk stand.  The microphone, at 4 inches in diameter, is one of the largest carbon microphones of this type, and it weighs a hefty 2.5 lbs.  It is unusual in the use of three suspension hooks, rather than the usual four.  It was also expensive, listing at $100.00 for the microphone, and an additional $25.00 for the stand.

This microphone was acquired from the estate of a former RCA engineer in northern New Jersey.  He had attached a tag to it which indicated that it had been used by the famed newsman, Lowell Thomas, whose radio career began in 1930.  Of course, there is no way to verify this, but it is certainly possible.

Kellog Microphone

Kellog Microphone-Rear View