Long-distance atmospheric optical communications

• Optical (through the air) 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" - 50th anniversary!   This page is about the 1963, 118+ mile (>190km) laser communication by members of the EOS Amateur Radio Club - with audio clips, pictures, and the story about this historic experiment.  More pictures and info can be found in the Operation Red Line photo gallery.
  

This page deals with long-distance atmospheric (through-the-air) optical ("lightbeam") 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 have taken on the challenge of furthering the state of the art in this somewhat arcane field.

• These pages are always in the process of being updated and expanded!
• The names "modulatedlight.org" and "modulatedlight.com" are completely interchangeable.