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 Lafayette HA230 HA-230 Communications Receiver Operating Manual $9.99 Read more Sylvania Model 139 Tube Tester Manual $7.99 Read more Sylvania 219 220 Tube Test Data Book $11.99 Read more National NC-300 NC300 Radio Receiver Manual $10.49 Read more