codes

• Morse code
  
• PL tones, CTCSS, and DCS
  
• radio codes
  

• aircraft
  
• broadcast frequencies
  
• canada
  
• fast food
  
• federal
  
• frequencies by state
  
• frequency band plans
  
• international
  
• maritime
  
• military
  
• miscellaneous frequencies
  
• PerCon Datafinder
  Search for frequencies, call signs, aircraft registrations and more.
• racing
  
• railroad
  
• satellites
  
• shortwave
  
• space shuttle
  
• weather
  

• digital scanning
  
• laws, rules and regulations
  
• magazines and books about scanning
  
• other scanning sites
  
• rcma
  

• coaxial cable reference
  
• commercial scanning tools
  
• freeware and shareware software
  
• scanner specs and info
  
• shareware scanning tools