Connecting a Pick-up
A Correspondent’s Difficulty Peatx-Two (Christchurch) : I wish to. connect a pick-up to my commer-cially-made set which uses a 227 detector, resistance coupled to the first audio and power detector. A.: When power detection is you cannot connect the pick-up to detector valve aS in leak detection. tt must be coupled to the first audio by connecting. one lead in the grid circuit and the’ other to earth. If the pick-up is connected to a 34-1 transformer resnlts will be greatly improved. {(We.note your ultimatum at the bottom of the letter. We refer corréspondents to dealers only when we_ consider that. any explanation we might give would be inadequate to meet the particular case. In eases like this to suggest that correspondents interfere" with their sets is really asking for trouble. It is not necessary to tell us not ‘ refer you to a dealer.)
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310320.2.30
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Radio Record, Volume IV, Issue 36, 20 March 1931, Page 9
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146Connecting a Pick-up Radio Record, Volume IV, Issue 36, 20 March 1931, Page 9
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