mrtnmcc

Joined 8 years ago

Karma
811
Submissions
285
Member since
Jan 26
Founder of Scale RF Inc. Former Principal on SpaceX's Starlink Program. Responsible for modem design on satellites, user terminals, gateways.
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Recent submissions

Comment · 1 month ago
You might also want the topic files to be compressed against each other to get a baseline matrix and then multiply any results by the inverse, assuming equal priors on the topics.
Comment · 1 month ago
Reminds me of Jobs saying.. the problem with phones these days is the bottom 1/3.

Some still disagree.

Comment · 2 months ago
Notice the log scale on the year axis. There is far more probability mass during older years because of that.
Comment · 2 months 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"

Comment · 3 months ago
Just use -- to signal you're a human. That and two spaces after periods :)
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Comment · 3 months 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 periodically compute the 2x2 IQ correlation matrix, then take the sqrt (e.g., Cholesky) and multiply your incoming Rx samples by that inverse. You can extend that further for widerband by using FIR taps but here the baseband matching is good enough to go with "single tap"
Comment · 3 months 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. Separately we have an ECCN determination under EAR. This does rule us out from exporting to a few places (Cuba, Iran, Russia, North Korea, Syria, and some regions of Ukraine). But we are able to ship to most countries.
Comment · 3 months 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 2.4, but more devices are moving into 5GHz these days.
Comment · 3 months 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 Moon RF for the bigger phased arrays!). Yes that incident kind of made our brand a mess..

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