Viewing profile — mrtnmcc

Just use -- to signal you're a human. That and two spaces after periods :)

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…

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 …

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.

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 …

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…

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…

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 wavele…

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 R…

Yes-- but it's open sauce!

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…

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 lar…

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 …

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 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 possib…

check out https://QuadRF.com/docs/

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 R…

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/…

That's some extreme paranoia. Don't you think the devs are competent or ethical enough to call out an ask like that?

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 thei…

$499 with Raspberry Pi 5 included.

Crowd Supply campaign: https://www.crowdsupply.com/scale-rf/quadrf#