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 127
ductance is a helix of 1-inch copper tubing, 52 inches indiameter, and, in the case of the Darien installation, 16 feet 6 inches long. The cathode terminal of the arc being grounded, the anode is con-nected through a hot-wire ammeter to a number of wave-changingswitches. Any one of these may be… … Hh HHi H -^i
