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Antennas in Linux

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Linux

For this article, I want to introduce a piece of software I've actually used recently in my own work. My new day job involves studying the ionosphere using an instrument called an ionosonde. This device is basically a giant radio transmitter that bounces radio waves off the ionosphere to see its structure and composition. Obviously, an important part of this is knowing the radiation pattern of the various transmitters and receivers.

Several methods exist for modeling the electromagnetic fields around conductors, but here I'm covering one called NEC2 (Numerical Electromagnetics Code). It originally was developed in FORTRAN at the Lawrence Livermore National Laboratory in the 1970s. Since then, it's been re-implemented several times in various languages. Specifically, let's look at xnec2c. This package implements NEC2 in C, and it also provides a GTK front end for interacting with the core engine.

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More in Tux Machines

openSUSE Tumbleweed vs. Leap 15.2 vs. Jump Alpha Benchmarks

Following the recent alpha debut of the openSUSE Jump distribution for testing that is working to synchronize SUSE Linux Enterprise with openSUSE Leap, there was an inquiry made about the performance of it. So for addressing that premium member's question, here are some benchmarks carried out recently of the latest openSUSE Leap 15.2 against the openSUSE Jump in its early state against the rolling-release openSUSE Tumbleweed. Read more

today's howtos

Ubuntu Touch OTA-13 Released With More Phones Supported, UI Improvements

The UBports community has announced the release of Ubuntu Touch OTA-13 as their newest over-the-air update to this Ubuntu mobile operating system. With Ubuntu Touch OTA-13 now supported are the Sony Xperia X/XZ/Performance and OnePlus 3/3T devices. This is on top of around one dozen other devices from the LG Nexus 4/5 to earlier OnePlus devices, FairPhone 2, Nexus 7, and different Meizu and BQ devices from the early days of the Ubuntu Touch effort at Canonical. Read more Direct: Ubuntu Touch OTA-13 release Also: Ubuntu Weekly Newsletter Issue 649

Announcement of the passing of Jari Fredriksson

Some know that Jari's mirror broke a few weeks ago and we've been trying
to reach him. I am sorry to announce that Jari Fredriksson was a great
supporter of the project running an sa-update mirror, helping with our
masscheck program, testing releases, and just generally being a great
member of our community.

On behalf of the entire project, I'd like to extend our condolences to
him and his family.  He will be missed.

If anyone wishes to send a note of condolences it can be done through
Jouni, his employer. http://www.jounivirtanenconsulting.com/contact/

Sincerely,

Kevin A. McGrail
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