• on Audio/Video/Photography
  • Published in issue 4/2004 on page 0
About the article

2 Transistors, 1 Crystal - that’s it!

Poor Man’s DRM is here

Almost too good to be true but tried & tested: a totally undemanding receiver giving you an opportunity to experience DRM digital broadcasts on shortwave. Digital SW almost for free!There are a large number of shortwave stations broadcasting not only conventional analogue signals but also digital programme material. This raises the exciting question if there might be stations that ‘fit’ standard quartz crystal frequencies and so can be captured using the ultra-simple receiver presented in this short article. Ultra-simple? Yes, the receiver consists of nothing more than a direct mixer and a crystal oscillator.
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