![File:Vintage Zenith Trans-Oceanic Multi-Band Tube Radio, Model Y600, Heavy-Duty High-Quality Construction, 5 Vacuum Tubes, Circa 1956-1957 (13787252955).jpg - Wikipedia File:Vintage Zenith Trans-Oceanic Multi-Band Tube Radio, Model Y600, Heavy-Duty High-Quality Construction, 5 Vacuum Tubes, Circa 1956-1957 (13787252955).jpg - Wikipedia](https://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Vintage_Zenith_Trans-Oceanic_Multi-Band_Tube_Radio%2C_Model_Y600%2C_Heavy-Duty_High-Quality_Construction%2C_5_Vacuum_Tubes%2C_Circa_1956-1957_%2813787252955%29.jpg/1200px-Vintage_Zenith_Trans-Oceanic_Multi-Band_Tube_Radio%2C_Model_Y600%2C_Heavy-Duty_High-Quality_Construction%2C_5_Vacuum_Tubes%2C_Circa_1956-1957_%2813787252955%29.jpg)
File:Vintage Zenith Trans-Oceanic Multi-Band Tube Radio, Model Y600, Heavy-Duty High-Quality Construction, 5 Vacuum Tubes, Circa 1956-1957 (13787252955).jpg - Wikipedia
![Zenith Trans-Oceanic: The Royalty of Radios: Bryant, John H., Cones, Harold N.: 9780764328381: Amazon.com: Books Zenith Trans-Oceanic: The Royalty of Radios: Bryant, John H., Cones, Harold N.: 9780764328381: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/71B7J+uMksL._AC_UL600_SR600,600_.jpg)
Zenith Trans-Oceanic: The Royalty of Radios: Bryant, John H., Cones, Harold N.: 9780764328381: Amazon.com: Books
![File:Vintage Zenith Trans-Oceanic Multi-Band Portable Radio, Model A600, Chassis 6A40, Broadcast Plus Short Wave Bands, 5 Vacuum Tubes, Black Stag Finish, Made In USA, Introduced In 1958 (34990417216).jpg - Wikimedia Commons File:Vintage Zenith Trans-Oceanic Multi-Band Portable Radio, Model A600, Chassis 6A40, Broadcast Plus Short Wave Bands, 5 Vacuum Tubes, Black Stag Finish, Made In USA, Introduced In 1958 (34990417216).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Vintage_Zenith_Trans-Oceanic_Multi-Band_Portable_Radio%2C_Model_A600%2C_Chassis_6A40%2C_Broadcast_Plus_Short_Wave_Bands%2C_5_Vacuum_Tubes%2C_Black_Stag_Finish%2C_Made_In_USA%2C_Introduced_In_1958_%2834990417216%29.jpg/1900px-thumbnail.jpg)