A.: Use the latter (200 turns on M.C.). What a.c. valve would you recommend for first audio.- (UX226). What valve will be best to use in making new eliminator to rectify the 450 volts?-(Use 2 x 281’s.)
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https://paperspast.natlib.govt.nz/periodicals/RADREC19290524.2.91
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Radio Record, Volume II, Issue 45, 24 May 1929, Page 39
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37Untitled Radio Record, Volume II, Issue 45, 24 May 1929, Page 39
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