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 187
V u Plate 1.—600-Watt Radio Transmitter. Front View. PuiE 2.—500-Watt Radio Transmitter. Side View. Plate 3.—500-Watt Radio Transmitter. Rear View. Wiring Diagram. 500-Walt Transmitting Set. MANUAL OF RADIO TELEGRAPHY AND TELEPHONY. 181 The ground connections should be electrically good and of…