Antenna design and electronics/electrical tool package. Takes you step by step through the design of these antennas: Dipole Fat Dipole Yagi J-Pole Super J-Pole Log Periodic Cubic Quad Vertical Helical. Also performs these calculations: Transmission Line Calculator Coil Design LC Filter Design Transmission Line Loss L Matching Networks Pi Matching Networks Impedance Calculations Wire Gauge and Resistance and Voltage Drop Wire Inductance.