Purple CRT?

[yagosaga]

Originally Posted by Steve K

I believe that those CRTs have the standard white phosphor but have a purple filter in front.

Steve is correct. I own a PYE LV30 with such a purple filter in front:

http://bs.cyty.com/menschen/e-etzold...e/img/LV30.jpg

The CRT is a common MW22-17 (with an ion burn in the middle of the screen). This purple filter was used to suppress reflections on the screen and to generate more contrast.

Eckhard