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Joined 1 year ago
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Cake day: March 31st, 2025

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  • Terrorist adoption of AI has thus advanced further and more systematically than prior analysis has recognized

    salafi extremists that declared western education sinful are now world-leading AI-first village-burning-as-a-service jihadist startup. okay whatever

    It has aided in attack planning, weapons troubleshooting, and the design of explosive devices, as users have successfully circumvented some safeguards.

    surely their contacts within ISIS or any number of other islamic militias couldn’t have taught them that previously, no they have to rely on movie plot ideas from chatbots. it probably helps that some people heard about them but peak years of their activity were in 2014-20 before ISWAP eaten their support base whole by not raiding villages and trying to replace state instead

    also, when trying to make sure that i got this right i’ve learned that apparently al-qaeda pivoted to app development


  • it’s not even known yet and they say so:

    The primary endpoint was progression free survival (PFS) assessed by BICR per RECIST 1.1. Secondary endpoints included overall survival (OS), objective response rate (ORR), duration of response (DoR), and safety profile. (…) The OS data were immature.

    it was also only for late stage metastatic patients with a very specific mutation. now, since AZ has the rights, and they have money for trials, they can try to get a trial for earlier stages, and so this new better drug might be used for larger patient population while still patented. and that would be money printer









  • That’s just the legal limit, i think we’re looking more at microwatt range or lower. Somebody on stackexchange measured power output of phone nfc module, and - measuring power received at secondary of air-core transformer - got 0.8mW. Assuming it’s representative, if all that power was fed into phone-sized magloop (10 cm square made out of 6 mm copper pipe) then at this frequency (13.65 MHz) we’re getting some -30dB efficiency so 800 nW. This is already very charitable overestimate, because NFC antenna is smaller, thinner, printed and multi-turn, and does not behave like magloop at all. Any response from passive device would be much weaker still. All of that uses high data rate (wiki says that ISO/IEC 14443 says 106 kbps), and because these things are where people live, there will be also a lot of urban noise. I’m not saying it’s impossible, but it wouldn’t be that easy






  • No, width is your design parameter. I’ve used 4mm wire because store ran out of 5mm wire, but 3mm would be fine too if you can make it work mechanically. Were it all in air with no plastic, width of both is such that impedances of matching section are close to 300 ohm. Plastic around it lowers impedance and makes wire appear longer. 2m antenna has 220 ohm matching section and it also works. Rectangular connection boxes also work but the ones i could get weren’t as stiff. The way it’s done, bottommost section can be clamped with a regular pipe clamp, it’s harder with a box. Either way 4 or 5mm is not thin on 70cm so impedance of dipole will be probably lower than 5000 ohm, and entire band is covered so it just works

    Pick any material you’re comfortable with. Start with 1 wavelength + couple cm of wire, measure out 1/4 and bend it so that 1/4 length point ends up at the bottommost point. Tune by trimming (both arms, lengths of shorter and longer should stay 3:1) and match by moving feedpoint lower or higher (lower is lower impedance). That’s why I’ve made them this way, you can see marks from screw near feedpoint because feedpoint was moved a bit both sides during tuning. By the time trimming gets minimum SWR close to say 420MHz adjust feedpoint to get minimum SWR then alternate between trimming and adjusting feedpoint if necessary. Every mm counts, small trims are better done by filing the wire down instead of cutting it. Plastic needs to stay on during measurement. Keep some 1m of free space (without large metal things) around antenna during measurement