Hi all,
i finished the device with a lot of Problems but now it works well in Germany.
We tested a lot of transistors from different sources. The best Voltage/Duty ratio, we got it with the transistor (T2)
http://www.reichelt.de/BF-299/3/index.html?ACTION=3&LA=446&ARTICLE=5464&artnr=BF+299&SEARCH=bf299
BF 299 :: Transistor HF NPN TO-92 300V 0,1A 0,625W
and
http://www.reichelt.de/L-XHBCC-2-2M/3/index.html?ACTION=3&LA=446&ARTICLE=138556&artnr=L-XHBCC+2%2C2M&SEARCH=2.2mh
L-XHBCC 2,2M :: Festinduktivität, axial, XHBCC, Ferrit, 2,2 mH
(Low Voltage Problem)
The second possibility is the modified firmware from radhoo (via Mail)