Robison's Manual of radio telegraphy and telephony for the use of naval electricians (1918)
Robison, S. S. (Samuel Shelburne), b. 1867, United States Naval Institute, Todd, David Wooster, Hooper, Stanford Caldwell · Annapolis, Md. : The United States Naval Institute · leaf 153
nableadjustment to suit the local conditions. Primary Circuit (see fig. 92a).—This consists of two inductances vari-able by small steps, a loading inductance and series condenser. The largerof the variable inductances (45-46) has a total value of 1.2 M. H., dividedinto 40 steps of equal inductance… … Fig. 92a.—Navy Receiving Set. Type A. MANUAL OF RADIO TELEGRAPHY AND TELEPHONY. 149 The smaller of the variable inductances (51-52) has a total value of0.03 M. H., divided into 20 equal steps. Both coils are wound on the samecore. The smaller is single layer, and the larger is wound banked. The…
