Tube glow colors

GnLguy Full Member Posts: 109	Tube glow colors Mar 7, 2014 10:40:08 GMT -6 TommyD likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by GnLguy on Mar 7, 2014 10:40:08 GMT -6 Good short article on how to interpret the various colors glowing within a vacuum tube. www.thetubestore.com/Resources/Matching-and-other-tube-info/Blue-Glow I have this in pdf format if anyone wants a copy