Wireless Telegraphy and Telephony

WIRELESS TELEGRAPHY 91 of wireless telegraphy in military service is the wireless telegraph automobile. The automobile is a stock pattern touring car of 30 H. P. provided with a special body arranged to carry six pas- sengers. The seats are elevated so as to afford storage space below for the entire wireless equipment and a truly astonishing amount of miscellaneous supplies. Fig. 107.—Company D Signal Corps at San Antonio, Texas, 1911, showing pack sets and telescoping pole carried by pack mules. The mast used to elevate the aerial is of light steel con- struction divided into eight sections which nest into one another with admirable economy of space. The socket for the foot of the mast is located in the center of the tonneau. Only a few minutes are required to raise the mast and aerial. The same gasoline motor employed to drive the automobile also drives a small dynamo which supplies the electric current for the transmitting apparatus. Two of these cars have been experimentally operated over a number of the old battle-fields of the Civil War.