October 1953 QST
Table of Contents
articles are scanned and OCRed from old editions of the ARRL's QST magazine. Here is a list
of the QST articles I have already posted. All copyrights are hereby acknowledged.
By 1953, General Electric had already been in business for
75 years, according to this full-page advertisement that ran in the American Radio Relay League's (ARRL)
QST magazine. It highlights a few key electronics-related accomplishments by the company
since its founder, Thomas Edison, in 1883 built the first electronic tube as the result of a discovery
that came to be termed the "Edison effect."
75 Years Old This Month, General Electric Has Written Tube History With a Long Series of "Firsts"!
1883 - First electronic tube was built by Thomas A. Edison, a founder of G. E., in connection with
his discovery of what was termed the "Edison effect."
1913 - High-vacuum, high-voltage tube was developed, and work was begun on thoriated filaments.
1915 - G-E tube research, toward modulating h-f for radio voice transmission, resulted in the design
and construction of a successful phone transmitter operated from a-c.
1918 - Quantity tube production. Over 100,000 radio vacuum rubes were built by G. E. for the U. S.
Army and Navy.
1923 - Superheterodyne circuit was announced. This remains the basis of modern radio reception.
1925 - First special-purpose tube for loudspeaker operation was developed by G. E. (Type UX-120).
Glow tubes were introduced for voltage regulation, and rectifier tubes made for radio receivers.
1927 - Screen-grid tube, for r-f amplification.
1942 - Lighthouse tube, for radar and u-h-f communications.
1951 - Ceramic u-h-f power-amplifier tubes were introduced commercially.
* * *
These and many other primary G-E developments - continued over the long history of ham radio - have
helped build a unity of interests with amateurs. G. E. gratefully acknowledges the debt which the electronic
industry owes to forward-thinking amateurs, and invites them to share in the dedication of G.E.'s 75th
birthday to the promise of still greater progress to come.
Posted November 2, 2016