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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

Edited 3 years ago
On a whim I tuned to the 630m band in WSPR, and was surprised to see a couple of stations. I had no idea my system could receive anything on 474 kHz. I think the signal around 1840 Hz baseband is QRSS.

The antenna is just a 100ft dipole fed with ladder line via a 4:1 balun and tuner. I believe the tuner was set for 80m.

#amateurradio #wspr #wsjtx #hamradio #radio #mf
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jmorris

James Morris

Clippy lives on 🤷🏼‍♂️
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jmorris

James Morris

This is the Xgecu T48 universal programmer, arrived with a Lunar New Year gift. The T48 supports over 32000 chips, including a bunch that of older MCUs such as the PIC16C*

#electronics
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jmorris

James Morris

Friday night fun -- learned how to use BitMagic & Tigard devices with PulseView software to make a logic analyzer. It works!
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jmorris

James Morris

Kind of wild how you can just walk up to the MI5 HQ in London.
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jmorris

James Morris

A couple of pages from Alan Turing’s 1940 treatise on the Enigma machine. Is there a important piece of reverse engineering?
@ Bletchley Park.
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