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 Hallicrafters S-38 S38 Radio Receiver Improved Operating Instructions $8.99 Read more Sylvania Model 140 Tube Tester Manual $9.99 Read more Printed 1951 Sylvania Servicing Radio Television with VTVM $8.99 Read more Lafayette HA700 HA-700 Communications Receiver Operating Manual $9.99 Read more