Roger G3XBM's (Mainly) Amateur Radio Blog

VK4EBP reported that he has carried out successful tests over a 10km NLOS (non line of sight) path using infra red. See Australian Optica...

My own red LED and IR experiments have had to stop as my brain bleed last year has left me (for now) too clumsy. People are still active tho...

Perhaps some of my readers can help me - what optical frequency is likely to be best for forward scatter off air molecules and dust particle...

Reading Stuart G8CYW 's article on the history of optical communications in the latest RadCom, I am considering repeating my recent NLOS...