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Basic NEC with Broadcast Applications by J.L. Smith

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3.1 Modeling Guidelines

Towers are modeled with short, straight wire segments. The antenna towers and any other conducting objects in the vicinity that affect its performance must be included in the model. Although one might be inclined to duplicate the physical detail of the antenna as closely as possible, it must be kept in mind that NEC-2 has significant limitations concerning radius changes, segment lengths, spacing, and so on that sometimes make an exact physical duplication yield inaccurate NEC-2 responses. Therefore, the suggestion offered here is that you use the simplest model that conforms to the rules and produces a reasonably ...

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