I am an electronics engineer specialized in Telecomunication systems graduated from Military University of Technology in Warsaw, Poland. I have spent 6 years working as an service engineer for ultrasonic gas flow meters. During that time I have been modeling an ultrasonic transducers using LTspice. Now I am working as Business Consultant for one of the bigest IT company in the world. I am also member of Hackerspace Trojmiasto comunity where I am giving free lectures on radiocommunications for HAM candidates. During that courses I excensively use LTspice as a best way to understand electronics and design before playing with soldering.