1703 Recording Audiometer
1. Independent testing of both ears at seven frequencies The 1703 automatically presents seven pure-tone signals successively — 500,...
Behavioral research
It was the late 60's and the DEC PDP-8 mini computer was the first to break the 20K price tag. It put the Digital Equipment Corporation...
Engineers and pioneers
During the 50's and 60's along with Rufus Grason these three engineers designed the instruments and built the foundation that made GS a...
GR Experimenter
The General Radio Experimenter was a quarterly publication known to engineers and students throughout the United States and many parts of...
SS Hope
SS Hope was a hospital ship operated by Project HOPE (USA).[1] Hope was originally built as a US Navy hospital ship, USS Consolation....
Vintage 455C Noise generator
The 455C Noise generator was a rack mount source of white noise in the audio and ultrasonic frequency ranges. The noise spectrum was 20...