On 6-3-2012 16:30, Michael Black wrote:

How many new tubes were released after 1975? Power tubes yes, but they
likely didn't fit the tester anyway. It was past the time of Nuvistors
and Compactrons, and the 12V tubes for use in cars. Yes, people still
used tubes in 1975, but they were fading (there were already articles
about solid state replacements for tubes by 1975) and not much was being
made with tubes.

Michael VE2BVW

Funny this topic just popped up. I mentioned to one of our younger
techs at work (30 years old) that I was thinking of building a tube
radio receiver from scratch just a couple days ago. Maybe for the FM
broadcast band or maybe some amateur band and set it on the shelf over
my bench at work.

N0EDV