PARS Members Photo Memorials
PARS Member Memorials Past PARS Members Remembered PARS Member Memorials The history of PARS is made up of good friends. Some people mentioned here have put their time and energy into the club, while others chose to contribute their knowledge and friendship to the...
Quartz Radio Crystals, Part II
Quartz for Radio, Part II As the second world war loomed, it was clear to many that science and technology would play key roles. Precise frequency control would become fundamental to what Dr. R. V Jones termed ‘The Wizard War.” (read the book!–it is...
The Magic Crystal That Saved Radio
At the end of “The Great War”, the new technology of radio was problematic at best. The problems were many and the solutions few. The rectifying characteristic of lead sulfide (galena) had been uncovered long before (in 1881). Pressure on the crystal was...
6. Radio and Television Reminiscences
Raymond M. Bell
4th edition, 2014
- Raymond Bell was born in 1907 and received a Ph.D in physics from Pennsylvania State University in 1937. He could name the day–May 18, 1922–he heard his first radio.
- In 1928 in his senior year as an undergraduate in college he built and demonstrated a closed-circuit mechanical tv, then wrote about that experience 71 years later in the Pittsburgh Oscillator.
Paperback, 51 pages, 8 ½ x 11, $15.00.
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