RadioBanter - View Single Post

January 3rd 06, 06:57 AM posted to rec.radio.amateur.policy

On 1 Jan 2006 16:52:58 -0800, wrote in
Now, if you want to "build from scratch" totally, you
will have to learn to SUCK all the air out of the tubes
you build for yourself (honoring the "tradition").
That's rather difficult (truly, vacuum sucks)...but
much, much easier than first creating ultra-pure
silicon and then doping the microscopic areas on it to
become the solid-state device you need. [sorry you
can't build "spark" transmitters...those being forbidden
in these modern times unlike a hundred years ago]

There was a fellow who did construct his own tubes. See the
publication "50 Years of ARRL".

Jeff KH6O
--
Chief Petty Officer, U.S. Coast Guard
Mathematics Lecturer, University of Hawaii System