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How to Make a Two-Step Amplifier
Radio for May, 1922
By D. B. McCown, Assistant Radio Inspector
When the receiver which was described by the writer in March RADIO has been completed, tested, and found to work satisfactorily, the owner thereof will find that it will not be sufficient to get all the radio telephone concerts and broadcast matter as loud as he would like to have them. The need for an amplifier becomes apparent at once, and is the only solution to the problem.