[Laser] Laser ATV long distance record 118,4km

[w.fritz at freenet.de]

Hello,
the 23rd of July 2013 we lifted up the long distance record for TV transmissions via laser (Laser-ATV) from
101km in the past up to 118,4km.
The team consisted of Tom, DL9OBD, Wilfried (myself), DJ1WF, Fredi, DD0DR, Horst, DK3BM, Uwe, DB4QM and
Werner, DG1YHC. The transmission took part between Brocken Mountain (1141m) and a small hill nearby the
village of Eilvese north west of Hannover in Germany, Lower saxony. A special feature is that both locations
were connected by a full duplex optical link for the very first time ever. All the records in the past were
simplex links. The wavelength was 650nm, the output power was around 80mW on both stations. We discovered
some
other longer distances which we will try in the future.
The atmosphere was not absolutely clear during the transmission, there was a very little haze which increased
the atmospherical attenuation.
For more informations please have a look at
http://www.mydarc.de/dj1wf/Laser/Brocken/Brocken.html.
Unfortunately it is in German langue only, the English part of the website has not been built yet. I am not
sure if there will exist an English version in the future.
Vy 73 de Wilfried, DJ1WF










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