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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.

Beigetreten Kasım 2022
53 Folgt1.5K Follower
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cemaxecuter
cemaxecuter@cemaxecuter·
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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RFNM
RFNM@rfnotmagic·
@sdamico Nah, lime is just the rfic and there are options (mt3813, rf112, adi with custom iq, etc.) I’m talking about the la9310/la1200.
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Sam D'Amico
Sam D'Amico@sdamico·
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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Luigi Cruz
Luigi Cruz@luigifcruz·
That is a big SDR (Allen Telescope Array)!
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RFNM
RFNM@rfnotmagic·
@jlcjak Banger.
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jlcjak
jlcjak@jlcjak·
dude it's a friken usb2 differencial, you don't have to match it down to the picosecond. stop being autistic and just make something that works
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Luigi Cruz
Luigi Cruz@luigifcruz·
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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RFNM
RFNM@rfnotmagic·
@MehdiHacks Interesting, but not new. We have been shipping our LA9310 based SDR for the last two years!
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Mehdi
Mehdi@MehdiHacks·
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.
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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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RFNM
RFNM@rfnotmagic·
@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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Fred Jansen
Fred Jansen@redplanet00·
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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RFNM
RFNM@rfnotmagic·
@Drachs1978 It’s all a big psyop from big radio. RF, not-magic!
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David Hinkle
David Hinkle@Drachs1978·
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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RFNM@rfnotmagic·
@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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Late 2 L2
Late 2 L2@late2L3·
@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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cemaxecuter
cemaxecuter@cemaxecuter·
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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RFNM@rfnotmagic·
@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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RFNM
RFNM@rfnotmagic·
@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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F4DAV
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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RFNM
RFNM@rfnotmagic·
@redplanet00 I wonder if maybe the pre selection filters are what’s causing this? The ADC sampling frequency should only affect the baseband interface and nothing else. Lime baseband gains are fixed in our code. Maybe the same issue is present at 61 MSPS, just more difficult to see.
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Fred Jansen
Fred Jansen@redplanet00·
The RFNM performed OK @ 61.44 MHz with fairly flat noise floor. At 122.88 MHz sample rate noise floor has a broad central 10 dB bump. Good news: when pointing at the Sun there is a increase of 7 dB over the full BW; i.e. gain=flat but noise floor is not. FY3E @ 122.88 MHz SR
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Fred Jansen
Fred Jansen@redplanet00·
The X-band chain was down for some time. Back up again and today tested with the newly arrived RFNM from @rfnotmagic - crop of NOAA 21. RFNM at 61.44 MHz sample rate. Nice view of the Wadden Sea at low tide using the majestic #SatDump
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RFNM
RFNM@rfnotmagic·
@TrippyTunesTV Yes, we are showing the way for the future of open, digital fpv. The right people will get behind it, eventually.
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TrippyTunesTV
TrippyTunesTV@TrippyTunesTV·
@rfnotmagic Dang, this looks like perfect hardware for a new, fully open low latency FPV digital video link.👀9cm band is pretty unexplored.
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Entdecken

@Aaronia_AG @sdamico @jlcjak @luigifcruz @sama @kalinowski007 @MehdiHacks @aang254