Base diagrams correspond to the codes in "Base" columns of the tube-data tables. Bottom views are shown throughout. Base connections are abbreviated as follows:|
BS - Base Sleeve NC - No Connection
F - Filament P - Plate
G - Grid PB F - Beam Plates
H- Heater S - Shell
IC - Internal Connection K - Cathode
Alphabetical subscripts indicate structures in multistructure tubes.
D = diode, P = pentode, T = triode, HX = hexode
Subscript CT indicates filament or heater center tap.
Generally, when Pin 1 of a metal-envelope tube (except all triodes) is shown connected to the envelope, Pin 1 of a glass-envelope counterpart (suffix G or GT) is connected to an internal shield.
• Click here to order these tube bases in
• Virtual Valve Website
• The complete 1951 Sylvania Tube Catalog (15MB)
• Here are tube socket dimensioned drawings.
|These tube bases are derived from the 2001 ARRL Handbook.|
"Tube Bases for Visio" Copyrighted by RF Cafe 2003