Eighty years ago this month, the October 1942 issue of Radio News carried this ad announcing that the U.S. Army Signal Corps was open for direct enlistment.  As long as they had not received notice of induction, young men ages 18 and 19 could sign up, as long as they were physically fit.  And up through ages 45, men with some experience in the communications industry could enlist as long as they passed the physical exam.

The ad appears to be paid for by Hallicrafters, probably as a way of keeping their name before the public, despite not being able to sell their wares for the duration.