Thanks for our  next cw QSO on 600m band and for your QSL as well. As I can see, there is data transmittion on freqencies between 498 and 502kHz. As for me, I preferd using 501.888kHz, but it seems, that it is not good idea to use this freqency now. I know, your favorite frequency is 502.500kHz. What do you mean, would be a problem, when I will be using 502.300kHz? I can´t disturbe you, but my signal is not so strong and  it  wouldn´t  be usable for UK stations on 501.888kHz. How serious problem is the data station for UK hams? 

Regards and 73! 

Lubos, OK2BVG