Further Experimentation

 Further Experimentation

Sunday, November 15, a blustery, albeit sunny day with temperature in the upper 40s around 9 am, found Harry WA0CNS, Herbert AF4JF and Ron KO0Z at Creve Coeur Memorial Park.  Harry and Herbert experimented with light communication. Harry was using red LED 635 nm in his station and Herbert was using 650 nm laser. That's a frequency around 462 THz! Harry also built an infrared beacon. Although the distance was only approximately 60 feet, both Harry and Herbert made successful 2-way QSOs using light.  Receiver sensitivity as checked and the experiment indicated that precise aiming of antennas is a necessity.  In early December, Harry and Herbert are going to further their 122 GHz distance record.

                             Harry WA0CNS receiving Herbert's AF4JF light signal.

                                      Herbert AF4JF transmitting to Harry WA0CNS

                                             Harry, Darcy and Herbert conferencing

                       Herbert AF4JF receiving Harry's WA0CNS signal at Creve Coeur Memorial Park