... to go. We were just, it was, all strictly haywire. I put a microphone in the circuit of what we called an old spark coil. © 2018 ... by throwing the vibrator down and putting an arc carbon microphone in the circuit, and putting just a wire and headphones over read more...
... I just happened to stumble on the idea of putting a microphone into the plate circuit of a vacuum tub e, which resulted read more...
... early radio equipment E Promo photo of John Fetzer with microphone F John Fetzer as a young man A John Fetzer in his read more...
... I just happened to stumble on the idea of putting a microphone into the plate circuit of a vacuum tube, which resulted in read more...
... back out as physical waves. And when you speak into the microphone, you're taking airways, 16 TB 11_30 Program 4 and then ... the crystal in the old microphones translated that into electrons, and then went out to the read more...
... I just happened to stumble on the idea of putting a microphone into the plate circuit of a vacuum tube, which resulted in read more...
... say and you’re picking that up. He said it’s like I have a microphone in my head and you have a speaker in yours, much like a ... radio station guy on a microphone, and you’ve got a speaker in your radio. It made perfect read more...
... (Photo courtesy of U.S. Army Signal Corps) Fetzer (at the microphone) during the New Year’s Day 1949 dedication of WKZO Radio’s read more...
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