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406 results for “gnuradio”
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Well appears as if there's no concept of time in #gnuradio. Everything is sample based. It's understandable but means the first helper module I think I will need to write is a sample counter though to provide other modules with a concept of time.
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Picked up some #whistlers from last night's #thunderstorms!
I thought I heard them last spring (storm season in the Southern Plains) but also caught their #vlf spectra last night.Spectra are produced with #gnuradio as "waterfall charts" : time on the y axis (most recent at bottom) and freq on the x axis.
Circuit was just a whip antenna with FET front end plus some amplification, and a low pass filter to remove broadcast radio, and a sharp high pass filter to remove power hum & harmonics.
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Picked up some #whistlers from last night's #thunderstorms!
I thought I heard them last spring (storm season in the Southern Plains) but also caught their #vlf spectra last night.Spectra are produced with #gnuradio as "waterfall charts" : time on the y axis (most recent at bottom) and freq on the x axis.
Circuit was just a whip antenna with FET front end plus some amplification, and a low pass filter to remove broadcast radio, and a sharp high pass filter to remove power hum & harmonics.
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Picked up some #whistlers from last night's #thunderstorms!
I thought I heard them last spring (storm season in the Southern Plains) but also caught their #vlf spectra last night.Spectra are produced with #gnuradio as "waterfall charts" : time on the y axis (most recent at bottom) and freq on the x axis.
Circuit was just a whip antenna with FET front end plus some amplification, and a low pass filter to remove broadcast radio, and a sharp high pass filter to remove power hum & harmonics.
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Уходящий в историю стандарт. Запускаем базовую станцию 3G (UMTS)
Приветствую всех! 2023 год стал началом массового отключения ныне уже устаревших сетей третьего поколения. Многие операторы по всему миру уже вывели из эксплуатации эти сети или запланировали это на ближайшие годы. Самое время для того, чтобы поднять такую базовую станцию у себя. И, как выяснилось в процессе, это не так просто, как может показаться. Итак, в сегодняшней статье разберёмся с тем, как собрать и заставить работать софт для поднятия сотовой сети типа UMTS. Узнаем, как устроены и работают такие сети. Традиционно будет много интересного.
https://habr.com/ru/companies/timeweb/articles/786198/
#timeweb_статьи #3g #umts #gsm #опсос #ran #arfcn #sdr #usrp #gnuradio #xubuntu #iptables #wcdma #utran #openbts #osmocom #asterisk #sipauthserve
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Уходящий в историю стандарт. Запускаем базовую станцию 3G (UMTS)
Приветствую всех! 2023 год стал началом массового отключения ныне уже устаревших сетей третьего поколения. Многие операторы по всему миру уже вывели из эксплуатации эти сети или запланировали это на ближайшие годы. Самое время для того, чтобы поднять такую базовую станцию у себя. И, как выяснилось в процессе, это не так просто, как может показаться. Итак, в сегодняшней статье разберёмся с тем, как собрать и заставить работать софт для поднятия сотовой сети типа UMTS. Узнаем, как устроены и работают такие сети. Традиционно будет много интересного.
https://habr.com/ru/companies/timeweb/articles/786198/
#timeweb_статьи #3g #umts #gsm #опсос #ran #arfcn #sdr #usrp #gnuradio #xubuntu #iptables #wcdma #utran #openbts #osmocom #asterisk #sipauthserve
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Уходящий в историю стандарт. Запускаем базовую станцию 3G (UMTS)
Приветствую всех! 2023 год стал началом массового отключения ныне уже устаревших сетей третьего поколения. Многие операторы по всему миру уже вывели из эксплуатации эти сети или запланировали это на ближайшие годы. Самое время для того, чтобы поднять такую базовую станцию у себя. И, как выяснилось в процессе, это не так просто, как может показаться. Итак, в сегодняшней статье разберёмся с тем, как собрать и заставить работать софт для поднятия сотовой сети типа UMTS. Узнаем, как устроены и работают такие сети. Традиционно будет много интересного.
https://habr.com/ru/companies/timeweb/articles/786198/
#timeweb_статьи #3g #umts #gsm #опсос #ran #arfcn #sdr #usrp #gnuradio #xubuntu #iptables #wcdma #utran #openbts #osmocom #asterisk #sipauthserve
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Does anyone here have experience using #SoftwareDefinedRadio for teaching Wireless Communication? I'm looking at the #NI #Ettus #USRP X Series right now. I like that it's programmable via #GNURadio. Would like to know whether it's a good investment, as it's kinda pricey, but looks like it's exactly what I need.
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Does anyone here have experience using #SoftwareDefinedRadio for teaching Wireless Communication? I'm looking at the #NI #Ettus #USRP X Series right now. I like that it's programmable via #GNURadio. Would like to know whether it's a good investment, as it's kinda pricey, but looks like it's exactly what I need.
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Does anyone here have experience using #SoftwareDefinedRadio for teaching Wireless Communication? I'm looking at the #NI #Ettus #USRP X Series right now. I like that it's programmable via #GNURadio. Would like to know whether it's a good investment, as it's kinda pricey, but looks like it's exactly what I need.
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Does anyone here have experience using #SoftwareDefinedRadio for teaching Wireless Communication? I'm looking at the #NI #Ettus #USRP X Series right now. I like that it's programmable via #GNURadio. Would like to know whether it's a good investment, as it's kinda pricey, but looks like it's exactly what I need.
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Does anyone here have experience using #SoftwareDefinedRadio for teaching Wireless Communication? I'm looking at the #NI #Ettus #USRP X Series right now. I like that it's programmable via #GNURadio. Would like to know whether it's a good investment, as it's kinda pricey, but looks like it's exactly what I need.
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I was able to reconnect with #hams from #maryland and people I met at #hamsci, #cedar, #hamvention and #gnuradio conferences. Some folx I haven't seen since the #pandemic! It was good to be out and about. Everyone was cool but no one who was still working wanted their photos shared on #socialmedia because they were concerned about security issues and fear of a #facist planet. This is what it has come down to. SMH 4/4
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The @gnuradio Birds-of-a-Feather #bof room
BoF: 50% an English proverb ("BoF flock together") meaning "people sharing interests or style like to occur and hang out together".
Since you, reading this, obvs. have great style & share interesting interests: Say hi! Tell a story on how you're using/dev'ing GNU Radio, or just meet users. Ask in-depth questions!I've not structured this very much, but can kick off a discussion on a few topics. I'd prefer participants decide the topics we'll cover!
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Hardware Hacking / Timenut Nerds: This is but a lightning talk, but I'll *really* be looking forward to it:
https://events.gnuradio.org/event/23/contributions/612/"The cheapest GPSDO yet"
It's going to be streamed!
See you all at the European GNU Radio Days '24.#GPS #GNSS #clocknerd #frequency #pps #timing #timenuts #pll #SDR
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@samirparikh
Thanks. It relies on existing building blocks though, like #MMDVM , #GNURadio and the #DMR trunking controller (DMRTC) which has been in development for more than two years. -
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HackRF + GNU Radio = WBFM Transmitter
Продолжаю цикл статей посвященных легендарному HackRF. В этом материале я хотел бы разобрать изнанку GNU Radio и описать широкими мазками то, каким образом оно устроено под капотом и сделать какой-нибудь минимально интересный проект с его использованием. Для себя я выбрал простую передачу аудиосигнала с микрофона с одного HackRF на другой через коаксиальный кабель с использованием OFDM-модуляции. Посмотрим на созвездия, спектр, принимаемый сигнал во времени и по частотам. Добро пожаловать под кат, будет интересно! 🙂
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Pretty happy that Dan Boschen of DSP.SE and DSPrelated fame is doing workshops at @gnuradio Conference 2024 (#GRCon'24) in September (16.–20.):
https://events.gnuradio.org/event/24/page/147-keynote-speakers
If you've ever gotten an answer on https://dsp.stackexchange.com, you'll know that the figures will be excellent and the explanations to match that. We'll be learning things on digital filter design and control loop development. Workshop space is limited, but no extra cost to the registration for GRCon in-person participation.
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Picked up a #hackrfone ; Excited to play with #gnuradio and RF!
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I was able to finally score a #HackRFOne #SoftwareDefinedRadio. Not easy to come by in these days of the #chipShortage. Working great so far with my #MacBook, with the software installed from #MacPorts. Now on to some adventures with #DigitalSignalProcessing and #gnuRadio
#SDR #DSP #STEM -
So I got this other flow graph put together that is built for a slightly different (simpler) SDR, which I chopped out of the flowgraph and dropped in the osmocom for the hackrf in it’s place.
I’ve got all my filter taps in place, per the diagram.
Problem is, those taps refer to each other by name, and some of those are abbreviated by grc using the elipsis…so I’m having to work out which ones are what. I’ve also found a decimal point off by one in one of the variables and corrected that.
I still have some red lines here and there, but I’ve got a complete system on the grid now that I’m debugging instead of a parts of things I’ve seen that don’t work with bits missing and whatnot.
I still suspect that some of my blocks need upgrading or patching or something, but for now I’m moving forward and see how it goes.
73
KI5SMN -
#hamradio #amateur #radio #sdr #hackrfone #gnuradio #holyshitthatsalottahashtags
So this morning when I started, I was pretty sure I had everything I needed to support the HackRFOne and went merrily off to follow the tutorials until I am become The Wizard.
Yeah, sure-sure.
Of course, thats not how any of this works.
The HackRFOne tuts were stale, and there's still a good deal of confusion here and there; the wide band fm reciever block, for instantce, provides an interface for de-emphasis tau, but the code generated for the block has no idea wtf that is even about.
So I found some stuff that didn't depend so heavily on on such special-purpose blocks, and build up a proper FM receiver based on a lot of other fundamental blocks and relevant block connection paradigms involving virtual sinks, fast fourier transforms and the typical like -- and I'm hopeful. I've yet to add some proper defaults to some bandpass filter taps.
I may sneak up on it, if I decide the whiskey wont interfere.
I'll keep ya posted.
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#hamradio #sdr #gnuradio #hackrfone
So I've noticed that gqrx seemingly drops an incredible amount of the sample, did someone set the sample rate too damned high?
I know that CubicSDR seems not to have this trouble, but it does have other less annoying issues.
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#hamradio #sdr #gnuradio #hackrfone
So today I’m continuing to extend my capabilities with my raspi4/hackrf build.
My first pass today was to follow the suggested path through the hackrf video tutorials. These are extensive, and there is a few hours, maybe more of these, and its a shame that they are out of date, focusing on an older version of grc, which incorporates a mess of wxwidgets blocks that are no longer preferred (QT is currently the rage).
These will no doubt still be incredibly useful at a later date, when I have gotten some traction with some slightly more general material.
I’ve already found some more generic instructions elsewhere, will note in replies concerning anything I find that’s useful.
73
KI5SMN
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Reverse Engineering a (Toy) Fire Engine https://hackaday.com/2025/09/06/reverse-engineering-a-toy-fire-engine/ #ReverseEngineering #WirelessHacks #RadioHacks #gnuradio #RTL-SDR
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Reverse Engineering a (Toy) Fire Engine - Your kid has a toy remote control fire truck. You have an RTL SDR. See where this ... - https://hackaday.com/2025/09/06/reverse-engineering-a-toy-fire-engine/ #reverseengineering #wirelesshacks #radiohacks #gnuradio #rtl-sdr
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Roll Your Own SSB Receiver https://hackaday.com/2025/08/19/roll-your-own-ssb-receiver/ #software-definedradio #Singlesidedband #WirelessHacks #gnuradio #hamradio #sdr #ssb