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Heatercathodeshort · 28th May 2022, 4:27 pm

I have no doubt that you have checked this but check that the filament voltage does not exceed 1.4V on mains. The valves are delicate filament wise and can easily be over run with a silicon diode in place of the old selenium rectifier. I wonder how many of these were manufactured. Quite large numbers appear to have survived in excellent condition. John.

28th May 2022, 4:27 pm	#22
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Putting RMB on a pedestal I have no doubt that you have checked this but check that the filament voltage does not exceed 1.4V on mains. The valves are delicate filament wise and can easily be over run with a silicon diode in place of the old selenium rectifier. I wonder how many of these were manufactured. Quite large numbers appear to have survived in excellent condition. John.