16 Feb
2010
16 Feb
'10
3:55 a.m.
--- On Mon, 2/15/10, Richard <legalize at xmission.com> wrote:
Or a repair
job, come to think about it. I pulled a
half pallet of new
National 12" tubes out of New Jersey a few
months ago
- a mix of
white, amber, and green - destined for
replacements in
terminals. The
electronics does not care about the phosphor
color.
And maybe the
repair depot techs did not care either.
What terminals were they intended for? From the looks of them, some were replacements for DEC
VT220 type terminals (no mounting ears), and the rest were just regular, generic tubes for
VT100 (ears) and everything else that uses that type of 12" tube. Heck, I've even
replaced terminal tubes with tubes scavenged from 12" television sets. Mono tubes are
pretty interchangeable. Phosphor color is dictated by the tube itself.
Once, for grins, I swapped a green tube from a banged up IBM 5151 display into a Zenith
12" television. I created the only TV with WordPerfect screen burn. The green. slow
persistence phosphor made TV watching rather weird.
-Ian