Useful Hints
QGUPHR-POWDR valves should be worked at the maximum rated plate voltage with the correct negative srid bias specified, if the best possible quality is to/be obtained. (CORRECT grid bias is particularly important for the last valve in a set, and too little grid bias will inevitably shorten the valve’s life, introduce distortion, and waste B battery current. , THE chief disadvantage of using wood for a panel is that panelmounting components are designed for panels of a quarter inch or less in thickness, and that wood of this thickness is not usually sufficient rigid. UTHOUGH a -small grid bias battery as used for R.F. stages has a very long life, do not imagine that it is everlasting, or you may be troubled with a mysterious and hard-to-define loss of efficiency and crispness. oa
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310313.2.43
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Radio Record, Volume IV, Issue 35, 13 March 1931, Page 15
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134Useful Hints Radio Record, Volume IV, Issue 35, 13 March 1931, Page 15
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