4nec2 Software

This program is just awesome for experimenting with antennas in software. By proper definition of dimension variables, it is even possible to optimize while enforcing symmetry for example.

This free software does everything and more the commercial versions do! Then, if that variable length for example needs changing, vampire diaries season 3 episode 16 it can be changed in one place in the model much like a software program.

It's a valuable tool for most antenna's facts understanding. Then start modeling your antenna ideas! This enables modeling input transformers.

By getting the ratio between threory and real, I could compensate for things like roof attenuation, velocity propogartion of insulated wire, complex surronding objects, etc. This displays the antenna and models its output.

Once you have ascended the learning curve, this piece of software can be fully appreciated for how amazing it is. It looked complicated, but when I played with it for a while, it is actually pretty simple. Stick to the stock editor to begin.

When I first ran this program I almost put it in the too hard basket. Putzing with it has filled many binders and files. Any modelling software has some learning curve. Be prepared to take some time learning how to take advantage of everything this modeling program has to offer. It's the most fun you can have without laughing!

My Subscriptions Subscriptions Help. If you want to change editors you can do that from the main menu options as well. My problem was to get a reasonable, low-cost m attic antenna in a crowded urban setting with metal surfaces everywhere.

4nec2 Download (Free)

And, once they are translated, you can modify the card format, and, turn them into variable based models for optimization. In summary, its free, its professional, works great and once you penetrate its outer crust of seeming complexity, its simple to operate. The trick is when you start using it, to realize that there are a number of editors. Hats off to Arie Voors for this wonderful tool! Press the space bar to toggle between side and top view.

You need symbols so you can give them to the optimiser to vary. Or balance all of these in weighted format. The power of computers and great sofware indeed saves time and money!

But first use the open button on the main menu to select one of the pre-defined antennas and then press the calculator button on the main menu. Now that would be an antenna!

Old versions

It provides graphical display of antenna currents and phase, and allows selecting segments for numerical current display in complex format. By following the instructions and examples provided it took only a few days. The default plotting routine is fully featured, and, the data array can be saved. Using it is like a drug, you can't quit. Even if y ou know what you are doing.

When first starting, after pressing the calculator button, select the far field option in the box which appears. If you want to edit the antenna, press the open book icon to get into the editor. The program has two parts.

Method of Moments)4nec2 (free) download Windows version

After thousands of optimizer iterations, It looks pretty good. Saves me wasting time physically testing poor configurations.

Numerical Electromagnetics Code NEC2 unofficial home page

However, one can model slightly elevated radial systems. You have to select View, then, select far field pattern. In complex antenna models, the variable name can be re-used in multiple locations. The enormous scope and deep potential of this program gradually sinks in. You can read a thousand pages about segmenting and just one input chart speaks a thousand words.

4nec2 antenna modeler and optimizer

This enables rotating through user specified slices around degrees and pulling detailed gain data as a function of angle and azimuth angle. This is useful for computing mutual impedance for example. At first, antenna modeling software is difficult to understand, primarily because of the Cartesian coordinate method used.