"Brian Gaff" wrote in message
om...


I have some old 405line projection tubes somewhere. Never run one outside
the light box with its 1inch thick lead glass concave mirror or you will
get an Xray overdose!


You mean the Mullard MW6-2?

Not specific to 405-lines of course, it was widely used on the continent in
625-line and even some French 819-line sets.

It ran with 25kV on the final anode, same as a modern colour tube, but
without the lead glass of the colour tube.

David.