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 182
TEZLEFUNKEN. Fig 102. 5 ^ \XL ^ … HOT WIRE. AMM- 5HIP MAINS CLOSED CIRCUIT OPEN CIRCUIT INPUCTANCC. INDUCTANCE FESSELNDENFiQ. 103. 12 178 MANUAL OF RADIO TELEGRAPHY AND TELEPHONY.