Signal Corps mobile radio unit.
Seventy-five years ago this month, most of the November 1942 issue of Radio News was devoted to the U.S. Army Signal Corps, and included dozens of photographs, including the color photos shown here. The photos themselves were taken by Signal Corps photographers, which comprised a branch of the service.
Here are a few of them, showing various phases of both wireline and radio communications.
Command car equipped for both voice and code communication.
Operation of handheld radio from Jeep, probably around 50 MHz.
Radio-equipped halftrack.
Students receiving instruction on portable transmitter. Note operating frequencies of 2300, 2900, and 3400 kHz.
Operating radio from concealed position with hand-driven generator.
Operating four-band portable field set.
Field telephone in operation.
Field telephone switchboard.
Placing telephone lines.