Quote:
Originally Posted by Electronic M
I'm tellin' ya I've had CRTs (modern junk) resting on their side with their necks propped up fall off the prop, and snap the neck...An entire postal journey that way is a very bad idea.
Also a tube should never have debris big enough to damage the phosphor loose inside it. That debris had to be a defect...Hopefully not knocked loose from a rough ride.
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If the foam is cut to exactly match the contours of the CRT then the neck will be under no greater stress than the rest of the CRT. This tube isn't large (although the neck is thin). I should also mention that 23ЛК1Б's are pyrex so they are stronger and lighter than conventional picture tubes.
http://www.radiomuseum.org/tubes/tube_23lk1b.html