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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

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 1 year 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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jmorris

James Morris

Finally learning #gnuradio. It's amazing.
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

ICYMI

RE: https://social.kernel.org/objects/b29af78c-329b-4bbb-9d99-81299bd1b6e7
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

📢 The schedule for the 2023 Linux Security Summit North America is published! 📢

See https://lssna2023.sched.com/

LSS-NA 2023 will be held in Vancouver, BC, Canada 🍁 from May 10-12.

🖋 Register to attend here: https://events.linuxfoundation.org/linux-security-summit-north-america/register/
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jmorris

James Morris

@pid_eins great to see this!

RE: https://mastodon.social/users/pid_eins/statuses/109959112315995623
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jmorris

James Morris

re: CW transphobia
Show content
@ruscur depressing & just not where we should be in 2023

RE: https://ozlabs.house/users/ruscur/statuses/109964183572477416
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jmorris

James Morris

Reply to
@vk6flab Look at the footnotes, especially 150. Why this is not called out explicitly in the national regs is unclear (FCC does the same here -- you need an army of lawyers for this stuff).
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jmorris

James Morris

Reply to
@vk6flab That is bananas. I've been out of .au for a few years now so didn't know this. All of the VH5A* entries in ACMA are for commercial or govt users in SA. One close callsign is the Bureau of Meteorology, so I was wondering if it was them monitoring for space weather.
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jmorris

James Morris

Reply to
@vk6flab I don't see it listed in the ACMA database. Could be a made up callsign for rx only.
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