![]() Or download here LinkInvD.zip.Īs can be seen I have made heavy use of 4nec2’s symbolic variable feature. The base model I ended up with (in 4nec2. In my model’s case the links are modelled as the short segments of wire which either have zero resistance, the equivalent of clip lead connected, and a high resistance (nominally 1 MΩ), equivalent of clip lead disconnected. In Tony’s original design the links used repurposed plastic chain insulators, and flying clip leads. You can see from the above that I ended up adding a number of short wire segments to make the positioning of both the feed and link equivalents. ![]() The setup for the antenna I ended up with is shown in Figure 1īasically the antenna wire is the green lines everything else is just to illustrate the maths to get a model that would automatically adapt to variations in centre height, and individual lengths of the three segments. A 4nec2 Model for a Linked Inverted V DipoleĪfter reading Tony’s write-up on his portable linked inverted V dipole ( April 2017 Nerg News) I was motivated to see if I could do a workable model for the antenna in a general purpose antenna modelling package, for me the best choice for this is 4nec2, it is free, and has many features even the paid for packages don’t offer.
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