Hy all, This post just to introduce me as newbie. I'm using PSKMAIL (in particular PSK500) since few weeks, and I amazed about potential it offers. Many doubts arise so sorry for any misunderstanding from me! I was looking for comprehensive english manual to learn in detail all fundamentals and stuff, any one can suggest me one? In particular something is wrong when handshaking with PI4TUE: connection is established @ PSK500 but soon this server switches to ??? mode and I cannot proceed anymore: any suggestion? By the way, 73 to everybody! De Roberto, IK3DJC, Treviso