@MehdiHacks It picks up all the background noise and forces you to build a shield for it.
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RFNM
153 posts
RFNM
@rfnotmagic
Adapting incredible 5G silicon to enable a new wave of inexpensive test equipment. Join us on our journey to prove that RF is, maybe, Not Magic.
Katılım Kasım 2022
56 Takip Edilen1.5K Takipçiler
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@rfnotmagic @F4DAV @LimeMicro There is code in there, but where is the compiler? The README mentions /opt/VSPA_Tools_vbeta_14_00_781, which Google can't even find.
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One year later, it looks like NXP LA9310 DSP documentation is now available without NDA (?) This would make RFNM from @rfnotmagic and limesdr-micro from @LimeMicro significantly more appealing.
F4DAV@F4DAV
@cemaxecuter @5N63S @rfnotmagic Indeed, the LA9310 80 GFLOP "VSPA" DSP could turn out to be a better use of silicon than reimplementing the same old downconverters, filters and FFTs on bare FPGA (even expensive FPGA with DSP slices). ADC+DAC+VSPA+M4 fits in 8 mm x 8 mm and draws 1.5 W. Any demos ?
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@F4DAV @rfnotmagic @LimeMicro I see that there are now several PDFs openly available, but what about the software? All I see from the official NXP website are links to CodeWarrior, which costs around $3k per license. There is mention of a BSP, but I don't see where to get that.
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@ardusimple @cemaxecuter Can you move those SMAs any closer together?
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First dual antenna GPS heading evaluation kit with all-band u-blox ZED-X20D and ANN-MB2, for centimeter precision and out-of-the-box moving baseline (heading, orientation, north indicator, compass, roll, pitch, yaw).
ardusimple.com/product/simple…
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RFNM retweetledi
Give me all the Bluetooth.. at one time! I knew there’d be a perfect use case for the @rfnotmagic + 1 lime daughterboard @ 122Msps.. (little overkill). Sorry, @Aaronia_AG I borrowed a boost cable, also worth mentioning I attempted adding v6 support.
github.com/alphafox02/blu…
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Meanwhile if the feds used the defense production act on Qualcomm, they could open their modem firmware and get DJI-like capabilities at smartphone costs
Data Slayer@data_slayer
The DOD pays $17,331.00 USD per Silvus StreamCaster 4400 IP mesh radio. Haven cost per node: under $200. The defense markup isn't 2x. It's not 5x. It's almost 100x. And ours is open source so it gets better every day instead of waiting 3 years for a contract modification. Your tax dollars at work.
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RFNM retweetledi
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RFNM retweetledi
Hey @sama, hit us up if you wanna connect GPT-5 to the Allen Telescope Array with a lot of on-sky time!
OpenAI@OpenAI
We worked with @Ginkgo to connect GPT-5 to an autonomous lab, so it could propose experiments, run them at scale, learn from the results, and decide what to try next. That closed loop brought protein production cost down by 40%.
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@MehdiHacks Interesting, but not new. We have been shipping our LA9310 based SDR for the last two years!
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LimeSDR Micro uses an interesting chipset: NXP LA9310 is a programmable baseband processor, that includes many things like a Cortex M4 microcontroller, and a PCIe controller.
It sits between the RF part and the PC.
It does what usually a FPGA does in such SDRs.
Mehdi@MehdiHacks
New SDR coming soon! "LimeSDR Micro" is offered in 2 form factors: mPCIe and M2. It has more than 100MHz bandwidth. I got a sample board to test and review. Will share the results here. They will soon launch a campaign on CrowdSupply.
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@luigifcruz The hardware would be easy is easy! It’s the software support that is likely to be a black hole for time.
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Can someone smarter than me create an oscilloscope board for the RFNM? The ADC is already integrated into the main board, and the signal only requires a bit of conditioning. I don’t want to buy a oscilloscope 😅
rtl-sdr.com@rtlsdrblog
An Initial Review of the RFNM Software Defined Radio rtl-sdr.com/an-initial-rev…
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RFNM retweetledi
From the second FengYun 3F weather satellite pass today at 12:37 local, some more tests: crop of the UK/Ireland. Using the @rfnotmagic SDR @ 122.88 MHz, recorded, demodulated and decoded with the @aang254 et al SatDump software.
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Because we've made it illegal for people to tinker with RF without significant licensing no children play with RF. Because no children play with it very few grow into adults that pursue it for a career. As a consequence; the field progresses very slowly, easy things are occult.
mariusheier@mariusheier
"Mediocre youtube engineer" casually drops video on "killer" defence tech maybe without knowing it. Doing this with SDR and you can "see" things emitting a radio signal (all electronics) on a battlefield. Freeing information and not compartmentalized in corps/countries changes everything
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@late2L3 @cemaxecuter What's the analog frontend in your book? The $20 LA9310? No, that's just honestly priced. The catch might be 8 Gbps PCIe bandwidth, maybe?
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@cemaxecuter @rfnotmagic How is that analog front end so cheap? 8x 160MSps w/ DSP?? Is there a catch somewhere I’m not seeing?
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Friendly reminder—still the most instantaneous bandwidth for the price point. Up to ~160 MHz wide off a single daughterboard w/ 2x USB3. Correct me if I’m wrong, @rfnotmagic.
rfnm.com (round 3)
P.S. Dual board LTEsniffer support would be a solid addition! 🙏
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@cemaxecuter @BatchDrake Might want to drop the 300 grams worth of heatsink for the application :D
But yes, you can use the local transport interface to get data to the iMX and process it there -- and it could be a 100/150 MHz wide spectrum, no problem.
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I’m going to need to improve on the mount.. but you thinking what I’m thinking? @BatchDrake @rfnotmagic
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@F4DAV @cemaxecuter @5N63S We can run a full 5G UE node when splitting the work between imx and vspa! Unfortunately yes, the nda is still in the way.
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@cemaxecuter @5N63S @rfnotmagic Indeed, the LA9310 80 GFLOP "VSPA" DSP could turn out to be a better use of silicon than reimplementing the same old downconverters, filters and FFTs on bare FPGA (even expensive FPGA with DSP slices). ADC+DAC+VSPA+M4 fits in 8 mm x 8 mm and draws 1.5 W. Any demos ?
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