Electrc 2008 NEC Calculator 2.1 Electrc 2008 performs many electrical contracting and engineering calculations in complete conformance with the 2008 National Electrical Code (NEC)
Electrc 2011 Trial 1.1 Electrc 2011 performs many electrical contracting and engineering calculations in complete conformance with the 2011 National Electrical Code (NEC)
RF ToolBox 3.8.0 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