Circular-Type Radio Antenna (Dec, 1942)
Circular-Type Radio Antenna
Designed for mobile use, this General Electric “doughnut” antenna shown at the recent convention of the Institute of Radio Engineers, can be installed directly above the roof of an automobile and is claimed to give the same results as the tall whip-type (vertical) antennas commonly seen on police squad cars. Efficient for both receiving and transmitting, it provides equal radiation of radio waves in all directions horizontally. The demonstration model was mounted on a toy train.