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1-125 Sylvania
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06-24-2010, 01:31 PM
bandersen
RCA 741PCS
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,825
Admiral, Motorola and Hallicrafters all used aluminum shields for their RF HV supplies. I'm not sure, but I bet it has to do the effect of ferrous alloys on the coil.
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