DM7A team July Contest 2010 in JO60LK / 38km laser contact

last weekend i participated in the V/U/SHF contest within the DM7A contest group. We were qrv from JO60LK (mountain Fichtelberg). This time Murphy was definitively with us. Problems with the mains supply, defect power supplies, missing rotary controller, defect 23cm rig, no chance to get german UMTS network… Not even the german DVB-T network could be received from our location at the Small Fichtelberg. We had to view the soccer game DL-LU in OK TV ;)
Find some pictures here:

http://dh5ym.hopto.org/DM7A/DM7A_Jul10/thumb.html

In the evening we tried Laser from Fichtelberg to the Dittersdorfer Hoehe near Chemnitz. The laser light from DK5WMA was visible immediately after switching on. The opposite direction worked as well after adjusting the direction on my side.
The signal was really strong but with heavy fast QSB due to the very humid air. We did the contact in CW. Find below a picture and a short video of my CQ loop that were taken by Marcel.

my laser as seen by DK5WMA in JO60MS

my laser as seen by DK5WMA in JO60MS

The following video shows how the laser of DK5WMA was seen in JO60LK. Of course the light was much brighter. The camera sensor seems not to take the green light very well. The flickering has its origin in the high air humidy and moving air because of some wind. The light was sent with constant amplitude at this moment.