Getting ready to do a test run of my probing class for my first in person beta audience.

This will be my second test run of the lecture (first was a YT livestream a year or so ago) and the first time doing the labs.

There's still more meat I want to add especially towards the end of the class (e.g. the section on current probing is just a handful of slides, and there's no lab for it yet as i don't have any current probes here) but it'll be good to get feedback from a test audience on pacing and content.

Probably going to do at least one more test round early next year before I start doing it officially. Looking into getting registered with IEEE to provide approved continuing education / professional development hours as well.

Testing a Ka band LNB, specified for 20.2-21.2 GHz. I could not see any signals beyond 22.8 GHz (well short of the 24 GHz amateur band), but that could be due to issues at the IF level. Worth investigating further. I was able to see a good signals at 22.2, an important radio astronomy frequency. #amateurradio #microwave #radioastronomy

@jcutting this is the content I signed up for

RE: https://social.vivaldi.net/users/jcutting/statuses/111446741178195059

Just received this in gmail. Seems like my ad blocker and/or ublock origin is working well here to stop them tracking my behavior. I have in fact been opening their emails. UbO for the email shows dozens of blocked requests to play.google.com and other related sites.

Current non-fiction reading pile.

#systemd v255-rc2 is out, go test it or else we'll deprecate your favorite feature https://github.com/systemd/systemd/releases/tag/v255-rc2

We gave two talks about Hypervisor Enforced Kernel Integrity and Linux Virtualization Based Security at #LinuxPlumbers - Leveraging KVM or Hyper-V to harden a VM:
- global project overview: https://lpc.events/event/17/contributions/1515/
- KVM implementation: https://lpc.events/event/17/contributions/1486/
- code: https://github.com/heki-linux

#PicoGUS 2.0 is officially released! It's an ISA card that can emulate Gravis Ultrasound, Adlib, CMS, Tandy 3-voice, MPU-401 w/ Intelligent Mode, and gameport joysticks!
This new version is 100% factory assembled and ready to just plug and play.
And it's open hardware: all design files are available under CERN OHL v2 Permissive license, so if you want to make (or improve) your own you can!
Available at my Tindie Store: https://www.tindie.com/products/polpo/picogus-sound-card-emulator-for-isa-retro-pcs/

It’s not everyday you get to touch an SR-71. It didn’t quite feel like metal, the paint seems to dampen it?

ICYMI: we've recently done some work on the #systemd documentation rendered on freedesktop.org, and now all manpages have a drop-down menu to select the release version to visualize. Also individual options are now tagged with the version they were first introduced in. These improvements should hopefully help readers with understanding what options are available in what version.

Example: https://www.freedesktop.org/software/systemd/man/255/systemd.exec.html

Here's a little new project of mine:

https://github.com/poettering/diskomator

It's an mkosi-built OS-in-a-single-EFI-binary whose only job is to expose all local disks via NVMe-TCP. You can write it to an USB stick, or drop it in your ESP, and if you boot it, all block devices are exposed to the network. The suggested command line to connect to this disk is shown on screen.

This makes use of the systemd-storagetm service we added for systemd v255, as well as the `esp` output added in mkosi v19.

Mastodon Ham Radio culture is amazing.

I am following 4 active threads about REALLY INTERESTING STUFF. On top of that, I see insightful commentary that makes me think about the hobby and how I enjoy it.

This is a great place to hang out. Thanks for making it great!

Yeah...YOU!

#hamradio

🐧If you're at Linux Plumbers Conf, in person or online, we are presenting an overview of Linux Virtualization Based Security (LVBS) on the main track at 10:15 ET.

https://lpc.events/event/17/contributions/1515/

Got distracted working on slides, used the AI in powerpoint to make some alien cities. Here's one on an accretion-disk world. The "water" is not for swimming.

Testbench passing for #polyphase channelizer for #Haifuraiya, an #opensource #HEO or #GEO communications #satellite design. Applicable to #hamradio, 5 GHz uplink and 10 GHz downlink. Shown is the transponder receiver filter.

If you’d like to join this or any other @OpenResearchIns project, get in touch.

At Linux Plumbers, toolchain track. @linuxplumbersconf

@linuxplumbersconf Youtube Live Stream URLs are now available on the Schedule Overview page (https://lpc.events/event/17/timetable/#all).

Find the track you want and click the paperclip on the upper right corner to bring up the Live Stream Link

#NASAWebb + the Hubble Space Telescope = gold! This image of galaxy cluster MACS0416 combines visible and infrared light to create one of the most colorful views of the universe. Astronomers have unearthed some nuggets of science, too: https://webbtelescope.pub/3txHQx4

Anyone else picked up some older Arduino code written in kernel-like C, which doesn’t compile anymore due to use of non-trivial designated intializers, and had to rewrite the code with C++ objects?

Today is the anniversary of the launch of the #Linux #Kernel Self-Protection Project (2015), and the invention of the Flux Capacitor (1955):
https://lore.kernel.org/kernel-hardening/CAGXu5jJ3FgxXK9WuOLRwnEq=y4dS+CTm+WQBxWe3sYZ7e9p6Gg@mail.gmail.com/