Onno (VK6FLAB)
Anything and everything Amateur Radio and beyond. Heavily into Open Source and SDR, working on a multi band monitor and transmitter.
#geek #nerd #hamradio VK6FLAB #podcaster #australia #ITProfessional #voiceover #opentowork
- 159 Posts
- 852 Comments
Onno (VK6FLAB)@lemmy.radioOPto
Amateur Radio@lemmy.radio•How LoRa (ExpressLRS) Drone Receivers Work
1·5 days agoStarting with a disclaimer, I don’t know, what follows is speculation only.
I suspect that the only requirement is that the slope of the chirp at encoding and decoding is the same.
Ultimately, it’s used to remove noise in relation to a reference level.
I haven’t had an opportunity to do the math to confirm this and I’ve bookmarked a few LoRa videos to see if they get into the mechanics, but I’m not holding my breath.
Edit: This video seems to explain things pretty well.
Onno (VK6FLAB)@lemmy.radioOPto
Amateur Radio@lemmy.radio•[FoAR] Foundations of Amateur Radio - CME, Wind, Flares, Flux and Geomagnetic Storms .. say what? #podcast
1·8 days agoAre you talking about solar flares, or a different phenomenon?
Onno (VK6FLAB)@lemmy.radioto
Cybersecurity@sh.itjust.works•WhatsApp Web chats exposed by Adobe's Acrobat extension flaw | MalwarebytesEnglish
6·11 days ago“That’s not a flaw … that’s a feature!”
Onno (VK6FLAB)@lemmy.radioto
Programmer Humor@programming.dev•Interview via MS Teams? How about NO.
21·12 days agoAround the turn of the century I built a “middleware” layer for an Oracle to MySQL bridge which enabled legacy systems to keep running while modern and open source tooling could be built.
The biggest challenge was moving from columnar to row based data … that and compiling Solaris tools using Oracle libraries.
Oracle is like sendmail, user friendly, just very picky whom it makes friends with.
I’m getting flashbacks to debugging an Oracle connection file.
Onno (VK6FLAB)@lemmy.radioto
No Stupid Questions@lemmy.world•How can AI act without initial human input? Does this show AI can have freewill or am I deceived?
71·12 days agoThis is OpenAI marketing.
The fact that it’s being reported on every media outlet on the planet, means that they were successful.
“We’re so bad … it’s good!”
Clearly you’re not feeding your squirrels enough roughage 😁
So … just so we understand, the radio is physically connected to a running power supply but the radio itself is switched off when the noise occurs?
This is exactly how we put up amateur radio antennas.
Some things to consider:
- how is it powered
- how do you get it down
- how do you stop it from killing someone on the ground when it eventually comes down
- how will foliage growth affect the range
- squirrels and birds will likely take an interest
- waterproofing
Onno (VK6FLAB)@lemmy.radioto
Cybersecurity@sh.itjust.works•Google pays $250K for Linux vulnerability allowing guest VM escapesEnglish
61·20 days ago… and replace them with a whole new class of bugs.
Source: I’ve been writing software since 1982.
Onno (VK6FLAB)@lemmy.radioto
No Stupid Questions@lemmy.world•In the past 5 years, whenever I talk it's like my brain's buffering. I can't find words or "load" the next sentence or sequence things. I used to be able to give unscripted presentations. Why?
3·21 days agoYou need to go to see a doctor now! Likely you’ll get a referral to a neurologist. Do not fuck around with this.
Onno (VK6FLAB)@lemmy.radioto
Cybersecurity@sh.itjust.works•Google pays $250K for Linux vulnerability allowing guest VM escapesEnglish
71·21 days agoAnd if you think that migration to Rust will magically remove all bugs and vulnerabilities, you haven’t been writing software for very long.
And right there you have the path forward!
Hang in there, it might feel tough for a bit, but this too shall pass.
Having had a parent die, I can tell you that the feeling never goes away, but it does get easier.
What’s the best memory you have of your dad?
Onno (VK6FLAB)@lemmy.radioto
World News@lemmy.world•Sam Neill, Jurassic Park actor, dies aged 78English
5·21 days agoWe just rewatched The Dish and drank a glass to both Sam and Tom.
The last time we watched, it was projected onto a bedsheet hanging off the back of my delivery van at Aileron Roadhouse in the middle of Australia surrounded by optical telescopes, a 2m portable broadband vSat dish, with the Sungroper solar car team during the 2003 World Solar Challenge … vying for the most remote internet cafe … we lost out to Mount Everest 😁
Onno (VK6FLAB)@lemmy.radioOPto
Amateur Radio@lemmy.radio•[FoAR] Foundations of Amateur Radio - The things you hear when you least expect it. #podcast
3·24 days agoMy 10 mW signal was heard 13,945 km away on 28 MHz.
Onno (VK6FLAB)@lemmy.radioto
Open Source@lemmy.ml•Would you self-host your family's memories?
1·24 days agoExcellent. Thank you.
Now look at the questions again and when you read the word “you”, insert “preludeofme”.
I’m asking because you’re also wanting to offer a service to customers.
Onno (VK6FLAB)@lemmy.radioto
Open Source@lemmy.ml•Would you self-host your family's memories?
6·25 days agoAI bots will hammer your endpoints into the ground if left unchecked. They’ll happily compromise your services while they’re at it.
Onno (VK6FLAB)@lemmy.radioto
Open Source@lemmy.ml•Would you self-host your family's memories?
91·25 days agoHere’s some questions:
- What happens when you die?
- What happens if your house is burgled or catches fire?
- How do you protect against pe(s)ts making themselves at home in your server?
- What happens with a power or internet outage?
- What happens with hardware failure?
- What happens if you suffer dementia?
- How are you dealing with AI bots?
- How are you mitigating hacking attempts, security, authentication and exploits?
- How are you dealing with data corruption?
- How do you mitigate against ransomware having entered your systems?
Note that I’m not picking on you, nor is this list comprehensive or in priority order. I’m trying to determine if you’ve considered these common issues and concerns associated with hosting stuff that has great sentimental value, if not actual value.
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