1950 Sylvania Tube Substitution Manual Amp HAM RADIO $7.99 Category: Sylvania Tags: Amplifier, Hi-Fi Amplifier, manual, Sylvania, Tube Manual, Vacuum Tube Description Description For sale is reprint 1950 Sylvania Tube Substitution Manual. Manual is 39 pages long, Includes Substitutions charts for 150Ma, 300Ma, transformer and Auto tubes, Television tubes and Picture Tubes. Related products Multi-Elmac PMR-8 Radio Receiver Manual $8.99 Read more Printed 1951 Sylvania Servicing Radio Television with VTVM $8.99 Read more National NCX-5 NCX 5 Transceiver Manual $11.50 Read more Sylvania Model 139 Tube Tester Manual $7.99 Read more