maxime borgesMar 5
Michael K Johnson

This is amazing. EA1FUO has built nec2c into WebAssembly, and now you can do antenna simulations on your phone or desktop without depending on nec2c running on a server. You can also deploy it locally, and he provides instructions for how to do this on docker or bare, and you can run nec2c on the server if you like.

Takes seconds to simulate my inverted V, and it even displays updates on what it is doing while running the simulation. It then gives a 3d rendering that you can drag around to get a better intuition. As you hover your mouse over the model, it shows gain in dBi with elevation and azimuth.

Beautiful work!

I don't know where else he's active, but he's been posting about this on Reddit as he's been developing it:
https://www.reddit.com/r/amateurradio/comments/1rfsr6f/my_new_modern_free_and_open_source_antenna/

Source code GPLv3: https://github.com/EA1FUO/AntennaSim

#HamRadio

AntennaSim — Web Antenna Simulator

AntennaSim — Free web-based antenna simulator powered by NEC2

Mar 3 at 9:15pmWeb
Show threadGiovanni - ZL2GXMar 3

@mcdanlj You're right - it' seriously impressive. Took me a moment to realise (unlike 4NEC2) that Y is the vertical axis (not Z) - however on further fiddling Z really is the vertical axis but the little coloured X-Y-Z indicator seems to have Y and Z swapped/mislabelled.

Here's an inverted-L end-fed via a 1:49 transformer #hamradio #amateurradio

Show threadMichael K JohnsonMar 3
@gmoretti I hadn't noticed that but now I see it. With a bug report in his GitHub I think. (Or a PR if you are inclined that way, naturally.) Nice catch!
Show threadGiovanni - ZL2GXMar 3
@mcdanlj I've added an issue in AntennaSim's Github repo.
Show threadMichael K JohnsonMar 4
@gmoretti I also filed an issue, for sideways elevation plots, and I see that he addressed both issues. 🎉
Show threadsergio_101Mar 5

@mcdanlj @th0ma5

say @th0ma5 .. is this the one you were talking aboot?

Show threadth0ma5Mar 6
@sergio_101 @mcdanlj Yes yes great stuff