2013 Advent Calendar Day 15
The laser microphone. The Laser microphone system is operated by transmitting an invisible beam to the window of the target room. The window pane is slightly vibrating in accordance to…
2013 Advent Calendar Day 12
Astatic 600 âConneautâ microphone This streamlined, rocket age 1946 design was named after the town where Astatic was headquartered (Conneaut Ohio). It was made in 2 versions, one with a…
2013 Advent Calendar Day 8
RCA 6226 Aeropessure Type microphone The âAeropressureâ was a rugged radio announcing and public address microphone designed for on-location use, featuring exceptional wind noise suppression. During its some five decades…
2013 Advent Calendar Day 7
RCA-77 This microphone was commercialized in late 1933 as the RCA 77A Unidirectional Microphone. The microphone was an instant success. The RCA 77A was followed by the RCA 77B, 77C,…