Tech
Non-linear History of Radio
Non-linear history of radio – touches briefly on just some of the main stories, and provides pointers to the literature.
12AX7 Tube Equivalents
12AX7 Tube Equivalents Technical information, substitutions, notes. The 12AX7 is a miniature dual triode vacuum tube, also known as an electron valve, that has played a significant role in the development of electronic equipment, particularly in audio applications. Introduced in the late 1940s by RCA (Radio Corporation of America), the 12AX7 was designed for use … Read more
