7jp4 crt and phosphors

[timmy]

With all the 7jp4 tubes out there with good emissions but a dark picture due to bad phosphors but no way to get inside to fix such a simple problem, It's like so close but yet so far. So if we use a 7jp1 and the pic is green and we take clear red cellophane and now the pic is black & white, because I've done it already but it becomes dark, but is b&w. So if the green can be cancelled by adding a color that neutralizes green then why can't we figure out some kind of phosphorus clear type cellophane like the red to somehow restore some of the picture. Maybe some kind of cellophane that reacts to hi voltage and or radiation, of course on a small level at least what the tube would emminate for it to react to improve the brightness. So many of these tubes I'm told have good emissions but they are dark and unusable. So if this was at all feasible then maybe the beams that work on the inside surface of the tube would extend radiantly to the phosphor cellophane on the outside of the tube and brighten up the picture. Just a crazy thought that we can put our minds together like the people did many years earlier and came up with the idea of a crt and what it does, think about it, it's amazing. Where would one get the phosphor that makes a b&w picture ?