[Laser] NLOS laser contact

[Andrew T. Flowers, K0SM]

For those who may be interested, I just received word that F8DO and 
F1AVY (this is in France for those not up the ham callsign prefixes) 
completed a contact on a 40km path using a "bounce" off of a hill near 
F1AVY.  The actual path length seems to be more in the neighborhood of 
50km. Hopefully Yves will put the pictures online sometime soon:

http://pageperso.aol.fr/yvesf1avy/index.html

The contact was made using I2PHD's "JASON" mode (at ~75Hz) and K3PGP 
receivers at 9cm lens.  The path made use of the very high reflectivity 
of vegetation at 780nm--if you've ever seen pictures of trees with IR 
film you have some idea of how this works.  It's a very cool idea.  I 
imagine anyone in view of snow-capped mountain peak could accomplish the 
same thing with much stronger signals due to the increased 
reflectivity.  Such paths also don't have the same aiming problems that 
LOS paths do since it is just a matter of getting the receivers to find 
the "dot" on the mountain.

Neat Stuff...I'll keep you updated.
Andy
K0SM/2



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