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Thanks guys. Actually I didn’t mean adding a second brightener. I meant in lieu of putting one on would there be a way to modify the chassis to make the filament voltage to the CRT variable so I could set it a little higher or up to the edge of disaster if I chose to do so. Unfortunately I’ve never had an original to the chassis or replacement 12LP4 that’s been close to strong. In my Dumont Chatham Doghouse I obtained a strong 12QP4 and swapped out the original 12LP4 with that.
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