Browning-Drake Improvement.
SEVERAL correspondents have enquired as to a method of altering the connections of the Browning-Drake rf. primary coils. This change was made in the 1928 Browning-Drake, and consists in placing in the r.f. plate B positive lead a radio choke instead of the primary coil. The primary is then connected to the plate with a .5 mfd. condenser in series, so that the other end of the primary is earthed to A negative instead of being connected to B positive. Improved results may be looked for with this change, either in one or two r.f. stages.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19281019.2.69
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Radio Record, Volume II, Issue 14, 19 October 1928, Page 27
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98Browning-Drake Improvement. Radio Record, Volume II, Issue 14, 19 October 1928, Page 27
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