He immediately requested the call letters WDHO - TV ( now WNWO - TV ) , incorporating his initials .
On March 11 , 1965 , Overmyer received his construction permit for channel 79 .
Overmyer immediately requested the call letters WDHO - TV ( now WNWO - TV ) , incorporating Overmyer 's initials .
On March 11 , 1965 , Overmyer received his construction permit for channel 79 .