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 KT-340 Communications Receiver Operating Assembly Manual $9.99 Read more Fisher FM-1000 FM1000 Service Manual $7.99 Read more Lafayette HA230 HA-230 Communications Receiver Operating Manual $9.99 Read more National NCL-2000 NCL 2000 Linear Amplifier Manual $10.49 Read more