Long-distance atmospheric optical communications

• KA7OEI's optical communications pages - by Clint, KA7OEI
  

• "The "Modulated Light DX" - pages by Chris, VK3AML and Mike, VK7MJ (Originally mirrored from Tony Sanderson's "Bluehaze" web site)
  

• "Operation Red Line" - the 1963, 118+ mile laser communication by members of the EOS Amateur Radio Club - Audio clips, pictures, and the story about this historic experiment.
  

This page deals with long-distance atmospheric (through-the-air) optical communications of various types using coherent and noncoherent light sources, methods of mitigating atmospheric effects on such communications, as well as various technologies involved in transmitting and receiving such communications.  The majority of the content on these pages is produced by self-funded hobbyists that had taken on the challenge of furthering the state of the art in this somewhat arcane field.