New concentric RX/TX optical system.
Kerry found some mirrors with holes in the middle.
This technique eliminates the paralax issues with alignment of side by side
This is a pic of a 4 mile path to a small retroreflector seen thru a 24x
Kerry's current (May 2002) optical communicator that runs voice, PSK, SSTV.
Schematic for full vided demo system.
Kerry's Optical Communicator pics