Jack ?Big Jack? Armstrong returns to his 2 to 6 p.m. shift Thursday after suffering a stroke May 17 on the station how owns Oldies 1380 KSRV-AM in Ontario, OR. The stroke did not cause permanent physical damage, centering on the part of the brain that controls speech, leaving Armstrong unable to go on the air. After four months, doctors have cleared Armstrong to return to the radio.
