He stepped down as president of General Radio in 1944 but retained the title of chief engineer until his retirement in 1950 .
During World War II , Eastham led the LORAN radio navigation development efforts at MIT 's Radiation Laboratory .
Eastham stepped down as president of General Radio in 1944 but retained the title of chief engineer until Eastham 's retirement in 1950 .
During World War II , Eastham led the LORAN radio navigation development efforts at MIT 's Radiation Laboratory .