Posts
428
Following
448
Followers
349
Linux Kernel security developer, working for Microsoft. Also W7TXT. Views are my own.
Topics: #Linux #kernel #security, #amateurradio, #RF, #hamradio, #electronics, #science, #radioastronomy, #physics, #space, #arduino.

📡 https://w7txt.net/
🐧 https://blog.namei.org/
☠️ https://www.facebook.com/w7txt
jmorris

James Morris

Reply to @jmorris
Edited 9 months ago
“Don’t ask me how I did it I just did it it was hard”. J/K, I will document this properly soon and it’s much simpler and than it looks.
1
0
3
jmorris

James Morris

Reply to @flpvsk@mastodon.social
@flpvsk I added these to my last Sparkfun order, has the usual collection of sizes.
0
0
0
jmorris

James Morris

Reply to @jmorris
@Stormgren @kb6nu also, FM repeaters, which will be vertical
0
0
0
jmorris

James Morris

Reply to @Stormgren@obsidianmoon.com
@Stormgren @kb6nu yep, check beacons, and wspr, dxmaps etc. seems quiet now. Local VHF groups can be helpful when setting up. The antenna should rx ok-ish on 10m, too.
1
0
0
jmorris

James Morris

Reply to @ftg@mastodon.radio
@ftg looks like indium shim ?
1
0
0
jmorris

James Morris

It feels like cheating to use these pre-cut wire links for soldering (vs. push-in breadboard), but I’m over making these by hand. #amateurradio #hamradio #electronics
4
1
10
jmorris

James Morris

Reply to @kelvin0mql@mastodon.hams.social
@kelvin0mql @vees you need to visit the Australian outback, Milky Way easily visible (much better vantage point) and you can also see the Magellanic Clouds, with the naked eye.
1
0
1
jmorris

James Morris

Reply to @jarkko
@jarkko I’ve never played with FPGAs, need to fix that at some point. This is possibly very relevant to RF digital, lots of amateurs now using s/w modems via usb sound, but performance is not optimal at high bandwidths. They will struggle to utilise the full potential of the recent FCC changes in the US to increase the data rates allowed on HF.
1
0
1
jmorris

James Morris

Prototyping a monitor circuit for GaN RF power amplifier devices. This is indicating drain current and heat sink temperature, and can be expanded to other measurements as needed. What started as a ‘simple’ project became an entire side quest. This uses an Arduino Pro Mini, an INA169 current sensor, and a thermistor. Could be done more simply with a PIC but this is what I had. The cheap OLED display self destructed not long after this photo, as I fed it 12v instead of Vcc.
1
0
2
jmorris

James Morris

Reply to
@bytex64 post some?
0
0
0
jmorris
repeated
mpi_grav@social.mpdl.mpg.de

MPI for Gravitational Physics

📣 Postdoc job alert 📣

The “Astrophysical and Cosmological Relativity” department at the @mpi_grav in Potsdam announces the opening of several postdoctoral appointments.

These appointments will be in the area of data analysis and its interface with waveform modeling for the recently adopted space-based gravitational-wave detector LISA.

ℹ️ https://www.aei.mpg.de/1155448/acr-lisa-postdoc

📅 apply by May 21, 2024

0
2
0
jmorris
repeated
LWN@fosstodon.org

LWN.net

[$] Systemd heads for a big round-number release https://lwn.net/Articles/971866/

0
4
2
jmorris

James Morris

Reply to
@lzg many protestors have absolutely no idea what is going on or who they're working for
0
0
0
jmorris

James Morris

Uh, why does dropbox "need" access to my contacts?
0
0
1
jmorris
repeated
rostedt

Steven Rostedt

Linux Plumbers 2024 has accepted 9 Microconferences! But we had 26 submissions for 18 slots! What to do with that? Read about it here: https://lpc.events/blog/current/index.php/2024/05/03/awesome-amount-of-microconference-submissions/

0
7
8
jmorris

James Morris

Got slightly distracted in midjourney.

This is Seattle, Cascadia in 3357, on the 1000th anniversary of The Fault.

Idaho's Mount Mersini-Houghton is in the background. Also notable is the newly refurbished Space Needle Memorial.
0
1
1
jmorris

James Morris

Videos from LSS-NA 2024 in Seattle are now up: https://www.youtube.com/playlist?list=PLbzoR-pLrL6rbN7fu5TId8VWAC5A8v5O7
0
1
1
jmorris

James Morris

Reply to @g4dbn@mastodon.radio
@g4dbn nice, I was thinking about the Edmunds dishes for mmwave. Are you planning to make more of these for sale?
1
0
0
jmorris

James Morris

Reply to @gigabecquerel@chaos.social
@gigabecquerel did you order them cut like that?
0
0
0
jmorris
repeated
pid_eins@mastodon.social

Lennart Poettering

Edited 10 months ago

2️⃣ Here's the 2nd installment of my series of posts highlighting key new features of the upcoming v256 release of systemd.

This time we'll talk about encrypted credentials. Credentials are these little pieces of information that you can pass into systemd systems and into system services. They can carry secrets but also other kinds of parameters. One key feature is that they can be encrypted while at rest, locked against the system's TPM…

1
5
1
Show older
About social.kernel.org

Terms of service

  1. Please do not use this service in violation of the Linux Kernel Code of Conduct. Doing so will result in your account suspension with the referral of the matter to the CoC committee.

  2. "Repeating"/"boosting" someone else's status on this platform will be treated as endorsement and will fall under rule #1.

  3. You are encouraged to use this platform to promote your work on the Linux Kernel, but there is no restriction on permitted topics (with the exception of anything covered by #1 above).

  4. There is no requirement to post in English, but it should be considered the primary language of communication on this platform.

Privacy notice

The admins of this service have access to all posted statuses. They aren't looking, but if it's something they shouldn't know about, then you should not post it on this platform.

Please see the Linux Foundation Privacy Policy, which applies to this platform as well.

Getting your own account

If you would like an account on this instance, please check that the following applies to you:

  • You are listed in MAINTAINERS or CREDITS

  • OR: You have a kernel.org account or email address

  • OR: You have a long and established history of involvement with the Linux Kernel

If the above is true and you agree with the Terms of Service and Privacy Notice listed above, please use these instructions to request an account: