1950 Sylvania Tube Substitution Manual Amp HAM RADIO Sorry, this product cannot be purchased. $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 National NCL-2000 NCL 2000 Linear Amplifier Manual $10.49 Read more Lafayette HA226 HA-226 Communications Receiver Operating Manual $8.99 Read more Sylvania Audio Oscillator Type 145 Manual $8.99 Read more