Crystal Detector Foxhole Radio Blue Razor Blade
(DIODE-RAZOR)
During World War Two, soliders built these "fox hole" sets out of anything they had to hand, taking advantage of
readily available materials. The instructions are
purposely lacking in detail; these sets were designed with
improvisation in mind. It will help if you have had some experience
with crystal sets before undertaking this project.
You
will be amazed that you can actually receive signals through so crude a
device.
The basic components are:
- Razor blade "the old fashioned blue type"
- Cardboard paper tube
- Stiff wire Wire or other handy strip of workable metal
- Headphones or earphone (2 - 4 K ohms)
- Large safety pin
- Lead from a wooden pencil
- #22 SWG insulated enamelled or cotton covered copper wire
- Something for a base (small scrap of wood)
- Lacquer, glue
- Small tacks or screws for fastening components
Miscellaneous :
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