Base for WD-11 vacuum tube

Many old radios use the long obsolete - and expensive - WD-11 tube. This base uses 3 pieces of 3/16" brass tube and a piece of 1/8" brass tube for pins. A CK5676 tube is soldered into the pins with a 22 ohm resistor across the filament to create the proper current draw http://www.vcomp.co.uk/tech_tips/wd11/wd11.htm. A cut-off piece of 1" diameter test tube can be inverted over the 5676 tube to resemble the original WD-11.