B5 Tube Valve base with 12y4 Radio Detector valve no soldering
- Made in the UK.
- This is for a B5 base and NOS. Marconi 12 volt 12y4 double diode detector board.
- Ideal for experimenting with low voltage tube circuits. You can substitute the detector in a crystal radio with this-connect up heaters 12volts 150mA and you have an early tube valve radio!
If you just want the B5 base see my other listing . Extra holes in the circuit board allow the base to be hard wired The B5 Base is assembled complete with NOS Marconi quality double diode 12y4 tube.
There are also holes for switch and LED to illuminate from the underside of the Base