mrtnmcc

5 ms·

1.
by mrtnmcc 13d ago
Notice the log scale on the year axis. There is far more probability mass during older years because of that.
2.
by mrtnmcc 22d ago
A way to get back at Texas for datacenter restrictions? Ten pads and thousands of flights per year sure will accelerate Golden Dome, err... I mean "going to Mars"
3.
by mrtnmcc 2mo ago
Just use -- to signal you're a human. That and two spaces after periods :)
4.
by mrtnmcc 2mo ago
This UDRP panel only had jurisdiction over domain name disputes. They still threatened going to court over trademark and we had more important things to do. The new domain is https://ScaleRF.com/
5.
by mrtnmcc 2mo ago
We had a similar result when a big U.S. defense company (Kratos) tried to take our open source project's domain name: open.space The panel ruled in our favor, that their OPENSPACE trademark is probably invalid because it is descriptive
6.
by mrtnmcc 2mo ago
A good tutorial on sigma delta is https://www.analog.com/en/resources/technical-articles/sigma... For a deeper dive, check out any of Richard Schreier's lectures.
7.
by mrtnmcc 2mo ago
Tx/Rx isolation is about -35dB to -40dB depending on the Tx/Rx polarization selection. The QEC image rejection is about -50dBc in Rx, and about -40dBc in Tx (one-time cal, without background cal enabled). The Tx and Rx are perfec
8.
by mrtnmcc 2mo ago
Yes once you have runtime IQ compensation figured out in digital, its essentially free and easily puts your image rejection ratio into the -50 to -60dBc range. I don't have a write up on the RxQEC, but it's rather trivial: you p
9.
by mrtnmcc 2mo ago
We don't support passive or active radar beyond basic near-field sensing. We also proactively submitted a detailed report to the State Department earlier this year showing we don't exceed any of the USML criteria for ITAR controls
10.
by mrtnmcc 2mo ago
Thanks for the support! C-band is really the sweet spot in terms of affordability and compact size (the scale of the antennas and array spacing increases proportional to the wavelength). Maybe at some point we'll develop something at 2
11.
by mrtnmcc 2mo ago
Yes open-space was a short-lived name: https://domainnamewire.com/2026/04/08/u-s-defense-contractor... (good story though) We finally settled on Scale RF for the company and Quad RF for the product (and Moo
12.
by mrtnmcc 2mo ago
Yes-- but it's open sauce!
13.
by mrtnmcc 2mo ago
Yes, I actually designed the I/Q calibration for many of Analog Device's transceivers (AD93x), and indeed it is a fun problem. If you're interested in what was done for QuadRF, you can read: https://QuadRF.com&#x2F
14.
by mrtnmcc 2mo ago
We've got the switching noise nailed down. Fortunately the LVDS jitter doesn't affect the sigma delta too badly because that impacts proportional to baseband frequency which is largely filtered out by the decimation filters beyond
15.
by mrtnmcc 2mo ago
We should have a video about MoonRF once we finish the QuadRF mass production, look for it ~ early September! Will be legendary! You can read on how the multi-tile synchronization and calibration works here: https://QuadRF.com&#x
16.
by mrtnmcc 2mo ago
Absolutely :) we're working on documenting an awesome Meshtastic demo. Should have a writeup next week to add to the Crowd Supply updates page. Also Roy on our team will be demoing it (along with the RF augmented reality) at Teardown 2
17.
by mrtnmcc 2mo ago
It really depends on the transmitter strength, but if you set the Rx gain high on the QuadRF, we get within 2dB of the thermal noise detection limit.. so about as good as is possible with a receiver this size. I believe a few km is easily d
18.
by mrtnmcc 2mo ago
check out https://QuadRF.com/docs/
19.
by mrtnmcc 2mo ago
Realtime sound visualization was actually a project I did 20 years ago as a freshman and that (probably?) inspired me to build this AR app in QuadRF. On balance, I would say this RF version was 200x harder.
20.
by mrtnmcc 2mo ago
QuadRF creator here. Happy to answer questions! We have a quick demo video as well: https://m.youtube.com/watch?v=QvniJk3uNyA Along with a deeper dive video: https://m.youtube.com/watch?v=zdJ9Tbm8ALg We did
21.
by mrtnmcc 3mo ago
That's some extreme paranoia. Don't you think the devs are competent or ethical enough to call out an ask like that?
22.
by mrtnmcc 3mo ago
What does it even mean to "get updates from China"? Software these days is distributed and globalized in virtually every sense. Polestar is headquartered in Sweden and much of their software development is in the UK.
23.
Seeing Radio Waves at 30fps(crowdsupply.com)
3 points by mrtnmcc 3mo ago|0 comments
24.
by mrtnmcc 3mo ago
$499 with Raspberry Pi 5 included.
25.
by mrtnmcc 3mo ago
Crowd Supply campaign: https://www.crowdsupply.com/scale-rf/quadrf#
26.
Camera for Radio Waves using 4x4 MIMO(crowdsupply.com)
3 points by mrtnmcc 3mo ago|0 comments
27.
by mrtnmcc 5mo ago
I'm mostly joking.. LNT is always the best policy, even if only (sometimes) for the feeling of pristineness. Honestly orange peels are incredible, the smell, the robustness. It reminds me of the joke of the plastic cup at Whole Foods f
28.
by mrtnmcc 5mo ago
Suppose this is the article to give that person who chides you for dropping an orange peel on a hike.
29.
by mrtnmcc 5mo ago
Yes the FPGA does digital beamforming and there will be published FPGA pin constraint files so you can write your own Verilog. For IQ samples, you can stream a continuous 60 MSPS IQ beam over the Ethernet, but for custom beamforming algorit
30.
by mrtnmcc 5mo ago
That post is truly hilarious though. If everyone talked like that on the nets, the hobby would surely grow a lot faster.

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