21-CT-55 has a new home

[miniman82]

Originally Posted by old_tv_nut

The gamut has to be measured by the light from an operating tube. Chemical analysis would require smashing the tube - not recommended!

Interesting. So would I be right in assuming the piece of gear to make such a measurement is quite expensive? I wonder if some university somehwere would have one I can borrow? I currently have both ilk of AXP tube, and I'm dying to put the 'phosphor' debate to rest once and for all!

What I'm really shooting for is to get a light sample from all types of tube, so we have a reference. Currently I have the 2 AXP's, a green FBP, a green FJP (sans lens), and a pair of grey faced CYP tubes for comparison. One of the CYP's is an 'A' version, not sure if that matters or not. That's the reason for the investigation.