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" ... and the sparking surface be kept true and plane, as shown by a straightedge. Great care should be exercised in reassembling the gap to set the mica washers accurately on the annular surfaces of the disk and to put on enough tension with the clamping... "
Radiotelegraphy: U.S. Signal Corps, 1914 - Page 105
by United States. Army. Signal Corps - 1914 - 122 pages
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The Wireless Age, Volume 5

Radio - 1917 - 1082 pages
...disk and to put on enough tension with the clamping screws to render all of the gap spaces air-tight. Tuning of Sending Set The tuning of the closed and...wave meter. If made without the meter the adjustments are more difficult and must be found by trial, but they should satisfy the following tests: (1) The...
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Radiotelegraphy: U.S. Signal Corps. : Rev. October 1916

United States. Army. Signal Corps - Telegraph, Wireless - 1917 - 144 pages
...disk and to put on enough tension with the clamping screws to render all of the gap spaces air-tight. TUNING OF SENDING SET. The tuning of the closed and...wave meter. If made without the meter the adjustments are more difficult and must be found by trial, but they should satisfy the following tests: (1) The...
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Military Signal Corps Manual

United States - 1918 - 596 pages
...disk and to put on enough tension with the clamping screws to render all of the gap spaces air-tight. TUNING OF SENDING SET The tuning of the closed and...wave meter. If made without the meter the adjustments are more difficult and must be found by trial, but they should satisfy the following tests: (1) The...
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Cases Decided in the Court of Claims of the United States, Volume 81

United States. Court of Claims - Law reports, digests, etc - 1936 - 1076 pages
...using the quenched gap. A Signal Corps pamphlet of 1916, plaintiff's exhibit 92, page 110, states that, "Tuning of the closed and open circuits to resonance...important adjustments in a quenched spark transmitter." The oscillation transformers and their associated open and closed circuits utilized in connection with...
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