Data on Radar CRT VCR511

[ppppenguin]

Some of the long persistance CRTs had an initial blue flash together with a long yellow afterglow. This was useful for some radar systems. By using a blue filter these CRTs could be used for a TV display. The table in WW doesn't say which, if any, of the CRTs are of that type.

Going way off topic, in that very same issue of WW, a certain Mr Casey (no relation of our Terry I suppose) wrote an article which could be taken as seminal in the world of audiophoolery. See pp299-302.