On Mon, May 2, 2016 at 5:46 PM, Charles Anthony
<charles.unix.pro at gmail.com> wrote:
Hmm. The Rhode Island Computer Museum has a working
VR20. We need to get
them to take a look inside it to see what kind of CRT tube is in there....
It hardly matters, since it's a beam penetration CRT that was custom
made for DEC and isn't used in *anything* else. Barring a major
miracle, the only way you'll ever get another suitable tube is out of
another VR20.