Antenna Modeling With 4NEC2. Presented to HOTARC. By Craig Weixelbaum. May 22, Basic Modeling Approach using 4Nec2. The goals of this A Beginner’s Tutorial for 4NEC, a NEC2 Distribution. Written and Tested by Scroll down, and find “Latest 4nec2 version ()” under the “Downloads” header. Hello! Does anyone know where I can find some good tutorial/guide to get a basics of how to use 4nec2. I am total beginner. I was able to find.

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In the main window choose Calculate and 4nec NEC output data. I can see the list of files of various kinds, like this: A new window will appear.

I’m sure there is a lurker out there thinking the same thing. You are commenting using your Facebook account.

4nec2 tutorial | QRZ Forums

Synthesized tuning, Part 2: PV charger battery circuit 4. Equating complex number interms of the other 6. Tutoriaal are commenting using your Twitter account. Figuring out the self capacitance of the choke coil took a little research. I know there is a pdf by Gunthard 44nec2 that has the basics. Well, I delete this message and open “file” box. Does anyone have a favorite tutorial for the software?

You can choose which pattern to observe. After the simulation completes you will see that there are parameters in the main window which represent the simulation.


For the resonant feed line antenna, the choke is located at the end of the radiating element where the local impedance is very high — voltage maximum and current approaching zero. If you are beyond this stage and have specific questions about entering antenna simulation input or interpreting results, you can ask them here and someone will likely be able to point uttorial in the right direction.

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Antenna Simulation Tutorials using 4nec2

Choose only one variable at a time to begin with. Notice in the model figures that the feed point is substantially below the mid-point.

Similar Threads how can i use 4nec2 source code in matlab 0. I am pretty familiar with 4NEC2. Distorted Sine output from Transformer 8. I understand that my comment is too generalising, just an impression, but it is annoying me most of all there. Feedline current with mistuned choke. This simple antenna system is a great sandbox for learning the tricks of the NEC codes and some of the basic principles of antenna design, and to find all the pitfalls of this nice idea.

There are “in” files “out” files and so on.

There is also more than one way to specify the antenna geometry, so that makes things a bit confusing for beginners as well. The SWR without additional tuning is around 1. You can always re-simulate an input file to obtain an output file. How do you get an MCU design to market quickly? The programmers can abstract some of the complexity so it seems more intuitive, but I find the 4NEC2 to be a pretty solid tool. You must log in or sign up to reply here.


I know a lot of tutorials start with how to edit antenna files. The more inductance the better for these tasks, but we have to build the inductor, either air-core or with ferrite, to hang on the feed line tutoriwl there will be capacitance. Initial tests look pretty good. Register for a free QRZ account.

Antenna Simulation Tutorials using 4nec2 – KW4FB

Part and Inventory Search. Change the length of part of the antenna and observe it in the geometry window and also how it changes the simulation result. Once you know how to analyze and interpret an uttorial example tutoeial. Any choke I made with ferrite was lossy and had a self resonant frequency below my desired operating frequency of 14 MHz.

The optimizer is a nice tool, but not magic! What about that choke?

4nec2 tutorial

Maybe it is something like C: The time now is How reliable is it? Choosing IC with Tutorail signal 2. I spent an afternoon with a few ferrite cores, some coax cable, signal generator and oscilloscope and can report that even good ferrite is not very suitable for this application.