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 National NCX-5 NCX 5 Transceiver Manual $11.50 Read more National NC-183 NC183 Radio Receiver Manual $11.99 Read more Fisher FM-1000 FM1000 Service Manual $7.99 Read more Lafayette HA226 HA-226 Communications Receiver Operating Manual $8.99 Read more