This ad, from the July 1939 issue of Radio Retailing, offers the reminder that your choice of tubes might be a matter of life and death. And if it is a matter of life and death, you should go with Raytheon tubes, just like many hospitals.
This ad, from the July 1939 issue of Radio Retailing, offers the reminder that your choice of tubes might be a matter of life and death. And if it is a matter of life and death, you should go with Raytheon tubes, just like many hospitals.