To: | Mike Waters <mikewate@gmail.com> |
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Subject: | Re: Topband: Need EZNEC file for 1/4 wave 160 vertical with radial system |
From: | DAVID CUTHBERT <telegrapher9@gmail.com> |
Date: | Thu, 10 Mar 2011 15:50:14 -0700 |
List-post: | <topband@contesting.com">mailto:topband@contesting.com> |
Here is how to build a useful NEC-2 model of a ground mounted 160 meter vertical. Place a vertical with four radials 1' over real GND. Use 20 current segments for each of the five wires. Place the RF source in segment 2. Place an RF load representing the counterpoise loss resistance in segment 2. Make this 5 to 15 ohms depending on your radial system. For example, for sixty 1/8 wavelength radials use 5 ohms. Dave WX7G _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK |
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