RF links

I haven't played with this stuff for ages, so apologies if the links are out of date.

• Amateur links (UK): Radio Society of Great Britain; UK Amateur Radio Quick Links; Random Access Labs
  
  
• BBC Research Papers
  
  
• Digital Radio: see DAB and DRM.
  
  
• ITU
  
  
• Manufacturers: Icom (UK site); Lowe.
  
  
• UK frequency allocations: excellent guide here. List of mirrors here. The official list is at Ofcom.
  
  
• Satellites: AmSat.org; LEO Weather Satellite Info; more here.
  
  
• StrongSignals.net: radio monitoring news and software.
  
  
• POCSAG stuff: Refreq protocol info. POC32 decoder for Win32.
  
  
• Dodgy Gadgets page by Richard Kalton.
  
  
• UK shops: Maplin; Nevada (Pompey); Waters & Stanton (Hockley)
  
  
• The Numbers Stations. Perhaps the cold war isn't really over? You can pick up these stations with a modest short wave receiver if you listen at the right times. Use an external antenna (e.g. a bit of sloping wire from an upstairs window) to improve your chances.