Exactly, thanks for the clarification,
the interface can be bought somewhere in Slovakia, or someone knows how to make it and take it apart?
It's not that I'm lazy to search, i found e.g. http://www.dinodirect.sk/akcia/USB-CT-62-CAT-kabel-pre-Yaesu-FT-100-FT-817-FT-857 ,I'm just not sure, Is this the right thing to do? (or trust the USB stick)and I will get advice from a reliable seller, these probably won't help me with possible problems.