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fullsquare

@ fullsquare @awful.systems

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2
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692
Joined
11 mo. ago

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • this is just a really extravagant heater, physics forbids antenna this small to have good radiation resistance. for your contrived below noise communications scheme, you need more bandwidth that is physically possible on hf, yet you choose antenna design that is even less wideband than regular dipole. 40m of wire is for 80m band, which is usable more often in this configuration, ignoring everything else

    As for throughput: a channel that is 9 KHz wide is supposed to transfer 9.6 kbit / s

    5500kbps in extremely favourable conditions is your peak attainable speed, bandwiths in normal radios are narrower

    A reasonable detection avoidance technique might be broadcasting from a depressed location or an urban canyon with tall ground clutter

    if you don't want anyone to hear you

    launch your guerilla transmitter on a free flight balloon, and will have plentiful line of sight.

    with what power source? better study for and get your license, start using radio and stop embarrassing yourself

  • Queensland PhD candidate accused of plotting to firebomb Australia Day event wanted AI-driven society

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  • Saryazdi allegedly said he expected to die during the Gold Coast attack unless he was killed or lobotomised by the Australian spy agency, Asio, the court heard.

    lmao i think that chatbots got there first

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • you super stealthy nvis signal might not be noticed by anyone, including intended recipient, but your antenna farm made form 40m long wires certainly will

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • yes i know how spread spectrum schemes work, but this is not really practical or relevant here

    for spread spectrum things to work you need some wide bandwidth, this works great for microwaves where you can spread your 90GHz band signal so that it covers 5GHz, you can't have a signal centered on 5MHz that is 5GHz wide; HF is relevant because while microwaves work with this microwaves are line of sight only and most people's line of sight still terminates in their own country. if you live on a lone hill next to border good for you, but the rest would need to use HF to get out, and there's simply not that much bandwidth available in the first place, which would make any scheme like this extremely slow if at all viable. and you can still jam it

    i don't assume that satellite repeaters would be a viable option because satellite, or any other receiving party for that matter, would need to be aware of modulation scheme to receive it in the first place, so it only works if your international contacts are pre-arranged, and even then you need radio that has much larger bandwidth that is usually available. yapping on LSB or narrow digimodes will get you heard within continental range, but also it will get you noticed, but if you hide from your adversary you also hide from everyone else not in the know. and even then, you can still get noticed, because it's under noise level only at some distance from you

    also some of these schemes require precise time to be known, and if you have gps jammed you'll get extra problems from that

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • ranked competitive version is called foxhunting and even kid can do it

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • you're also a shining beacon every second you transmit and even states with moderate capabilities record their radio spectrum 24/7 even during peacetime

  • HAM Radio Operators in Belarus Arrested, Face the Death Penalty

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  • agree on uncensorable but keep in mind ham radio is antiprivate by design - every time you say your callsign you sign off

  • Deleted

    Europeans, please chime in: How can an American do a PhD in Europe? Whom do I talk to for each of the countries I'm interested in?

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  • yeah nah, you are a tool and talk like one, there's zero risk you're ever getting close to admission

  • Deleted

    Europeans, please chime in: How can an American do a PhD in Europe? Whom do I talk to for each of the countries I'm interested in?

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  • how many alts have you made today

  • Deleted

    Europeans, please chime in: How can an American do a PhD in Europe? Whom do I talk to for each of the countries I'm interested in?

    Jump

  • Stubsack: weekly thread for sneers not worth an entire post, week ending 25th January 2026

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  • watch them shut down call center as soon as they figure this out

  • If a Space Elevator became a reality, wouldn't the cable act as a kind of wick for all of the unfiltered radiation from outside our atmosphere?

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  • you need really spicy photons for activation to happen

    in space you also have protons some with relatively high energy. most of these come from solar wind and also can cause activation

  • Stubsack: weekly thread for sneers not worth an entire post, week ending 25th January 2026

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  • oh look, simple sabotage as a service

  • Is Israel The Bankrupt Colony? How the Gulf States Bought the Region Washington Could No Longer Afford

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  • substack is not news

  • Trump in letter to Norwegian PM: "Feels no obligation to think purely of peace" due to Peace Prize rejection

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  • trump rn

  • Ed Zitron on big tech, backlash, boom and bust: ‘AI has taught us that people are excited to replace human beings’

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  • shooting down bosses stupid ideas is #1 productivity tip for professionals (like most people on lemmy are)

  • 'Warmth from Poland' — More than $650,000 raised to buy generators for Kyiv amid energy crisis

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  • it's closer to 2.8M now, which is 770k dollars

    e: it's 2.94M ($810k) now and they have increased target from 3M to 5M ($1.38M)

  • Stubsack: weekly thread for sneers not worth an entire post, week ending 18th January 2026

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  • is it because of pushback, or is it because money is running out

  • Deaths from Iran protests reach more than 500, rights group says

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  • note that these are only verified and identified as either protestors or irgc, and these are numbers from saturday. later reports that are counting more broadly estimate that number of killed is at least 2000 (saturday) or closer to 10000 (sunday). complete internet blackout lasts 3.5 day now and it's not helping either, this also means that information diffuses slowly within iran