23:4523:45, 22 July 2007diffhist+208
N
File:Ship nec.jpg
J. Murphy, SSC-SD, GNU Public License Software - Numerical Electromagnetic Code (NEC) screenshot of generic, public domain model of shipboard HF antenna.
23:3523:35, 22 July 2007diffhist+233
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File:Parabolic Pattern.jpg
J. Murphy, JPEG screen capture from generic, public domain model of a shipboard HF antenna using Numerical Electromagnetics Code (NEC) software. Software version non-proprietary.
23:4523:45, 22 July 2007diffhist+208
N
File:Ship nec.jpg
J. Murphy, SSC-SD, GNU Public License Software - Numerical Electromagnetic Code (NEC) screenshot of generic, public domain model of shipboard HF antenna.
23:3523:35, 22 July 2007diffhist+233
N
File:Parabolic Pattern.jpg
J. Murphy, JPEG screen capture from generic, public domain model of a shipboard HF antenna using Numerical Electromagnetics Code (NEC) software. Software version non-proprietary.