1950 Sylvania Tube Substitution Manual Amp HAM RADIO $7.99 1950 Sylvania Tube Substitution Manual Amp HAM RADIO quantity Add to cart 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 Add to cart National NC-183 NC183 Radio Receiver Manual $11.99 Add to cart EICO Model 147 Deluxe Signal Tracer Instruction Manual $7.99 Add to cart National NCL-2000 NCL 2000 Linear Amplifier Manual $10.49 Add to cart