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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

@LinuxSecSummit ICYMI

RE: https://social.kernel.org/objects/e72fbf67-74c7-4945-a9c6-5ea76dd25c99
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jmorris

James Morris

Reply to
@abraxas3d ok, seems problematic that anyone can modify someone else’s application.
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jmorris

James Morris

Reply to
@abraxas3d what happened to the money ?
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jmorris

James Morris

Next project: assemble these components from W6PQL into an MF/HF/6m amplifier. It’s specified for 1kW but I suspect it can do more. #amateurradio #hamradio
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

📢 The CfP for the Linux Security Summit EUROPE is now open! 📢

The event will take place Sept 20-21, in Bilbao, Spain.

See the CfP here:

https://events.linuxfoundation.org/linux-security-summit-europe/program/cfp/

The CfP closes on June 5.
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jmorris

James Morris

@mpi_grav also fascinating -- the optimistic articles in that newsletter from 2012, before gravitational waves had been detected. This is history happening right in front of us.

RE: https://social.mpdl.mpg.de/users/mpi_grav/statuses/110141099443133941
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jmorris

James Morris

Reply to @jmorris
@vk6flab the code is modified from https://github.com/SmittyHalibut/GR-MultipleReceivers
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jmorris

James Morris

Reply to
@vk6flab no, it splits out channels from the sampled rf and demodulates them to audio, and then each audio channel is fed to its own wsjtx instance. I believe there are gnuradio modules which can decode these protocols, but this works.
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jmorris

James Morris

I’ve learned just enough #gnuradio to be dangerous. Now monitoring WSPR on two sub-bands of #8m as well as FT8 via an #rtl-sdr. Now if the sun could eject some coronal mass in this direction, that would be super. #hamradio #amateurradio #vhf #wspr
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jmorris

James Morris

Reply to
@LWN I really need to adjust the fonts on this thing
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jmorris

James Morris

@brauner nice coverage!

RE: https://mastodon.social/users/brauner/statuses/110119441612643099
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jmorris

James Morris

Reply to
@abortretryfail If you're interested, check out https://groups.io/g/hflink
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jmorris

James Morris

Reply to @monsieuricon
@monsieuricon @corbet would certainly save many years or decades
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jmorris

James Morris

Reply to
@abortretryfail very little these days on the amateur bands. ALE is more about automating HF and somewhat antithetical to most ham use. It is used in EMCOMM and land mobile, but generally on non-Amateur networks like SHARES.
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jmorris

James Morris

Reply to @jmorris
Edited 2 years ago
The antenna is the simplest version of http://hflink.com/antenna/#ATU

Needs to be broadband and capable of fast frequency change (either via an ATU or inherent broadband design).

I'll be testing this on the HFN network over the weekend.
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jmorris

James Morris

Reply to @corbet
@corbet yep, the enshittification is underway
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jmorris

James Morris

Testing a 2-wire fan dipole on HF, doing some ALE. It’s always fascinating to see physics & information theory working per the math. Anyone else?
#amateurradio #hflink #ale #hf #antenna #rf #hamradio #radio
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jmorris

James Morris

Very useful!

RE: https://fosstodon.org/users/kernellogger/statuses/110059888755223720
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jmorris

James Morris

Reply to
@adamcsmith the Wellbrook loops seem to be sold out.
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jmorris

James Morris

Reply to
@adamcsmith I've been thinking about getting one as a separate RX antenna in high noise environment. Need to accelerate that. And yes, I've noticed that if there's just one station in a region receiving my WSPR signal, it is often using a Wellbrook.
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