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In-Band Single-Frequency Signaling By A. WEAVER and N. A. NEWELL (Manuscript received June 7, 1954) Single-frequency signaling liberates dial systems from the restrictions of dc signaling methods. This freedom, as might
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Document Date: 2008-08-21 12:12:51
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In-Band Single-Frequency Signaling By A. WEAVER and N. A. NEWELL (Manuscript received June 7, 1954) Single-frequency signaling liberates dial systems from the restrictions of dc signaling methods. This freedom, as might