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QuadRF can spot drones and see WiFi through my wall

jeffgeerling.com

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Re: QuadRF can spot drones and see WiFi through my wall

#161

Post by radicality »

mrtnmcc wrote: post #95

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 didn't give Jeff great direction on camera alignment calibration or setting the radio gain but he seemed to mostly figure it out. We're improving the UI based on his suggestions (it's open source so you can customize…

Product looks cool, not sure what I’ll use it for but did just purchase it on crowdsupply :) How did you settle on that frequency range btw? It’s 4.9 - 6ghz, so it will visualize the higher freq WiFi, but I guess it will not work for the 2.4ghz WiFi, or Bluetooth which is also around that frequency? And I don’t know tooo much about RF, but would including support for that range also, have necessitated much more complex/expensive hardware/antennas ?

Re: QuadRF can spot drones and see WiFi through my wall

#164

Post by drnick1 »

mschuster91 wrote: post #60
rtkwe wrote: post #21

Earlier quoted context omitted.

Prices have gone a little insane in the last year though too to be fair to them.

The Pi alone... just today, someone over at Reddit spotted a Pi 5 being sold for 350$ [1]. [1] https://www.reddit.com/r/homelab/comments/1uso8u1/insanity/

The Pi 5 has always been a horrible value, even when you could buy it at MSRP.

Re: QuadRF can spot drones and see WiFi through my wall

#165

Post by fc417fc802 »

go_artemis wrote: post #98
jkuli wrote: post #83

Earlier quoted context omitted.

The covered materials are very broad, though often limited to equipment built "for purposes of", like in this section. Title 22 Chapter I Subchapter M Part 121 - The United States Munitions List - Category XI Paragraph b Electronic systems, equipment or software, not elsewhere enumerated in this subchapter, specially designed for intelligence purposes that collect, survey, monitor, or exploit, or analyze and produce…

> specifically designed to collect or analyze information from the electromagnetic spectrum Wouldn't that apply to every spectrum analyzer?

Where did your quote come from? The comment you're replying to says "specially designed for intelligence purposes". The word "specifically" doesn't appear.

Re: QuadRF can spot drones and see WiFi through my wall

#166

Post by fc417fc802 »

jkuli wrote: post #87
jkuli wrote: post #83

Earlier quoted context omitted.

The covered materials are very broad, though often limited to equipment built "for purposes of", like in this section. Title 22 Chapter I Subchapter M Part 121 - The United States Munitions List - Category XI Paragraph b Electronic systems, equipment or software, not elsewhere enumerated in this subchapter, specially designed for intelligence purposes that collect, survey, monitor, or exploit, or analyze and produce…

At what point does a microphone become an intelligence device, when we have so many types of microphones. Is it an arbitrary label I can add or remove to a product? Will it apply equally to large manufacturers?

It's a matter of intent, which will ultimately be litigated in court and is going to depend on a lot of surrounding factors.

Re: QuadRF can spot drones and see WiFi through my wall

#167

Post by fc417fc802 »

Svoka wrote: post #111

It is crazy for me to see super secret military tech from 30 years ago commoditized to a system cheaper than gaming console. What a time to be alive!

I don't think it was ever (past 30 years) particularly secret? The general concept is long (100+ years) established. However pulling it off used to be exorbitantly expensive.

Re: QuadRF can spot drones and see WiFi through my wall

#168

Post by RyJones »

mrtnmcc wrote: post #95

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 didn't give Jeff great direction on camera alignment calibration or setting the radio gain but he seemed to mostly figure it out. We're improving the UI based on his suggestions (it's open source so you can customize…

if I put two of these far-ish apart, can I get better 3d/4d data?

Re: QuadRF can spot drones and see WiFi through my wall

#169

Post by butvacuum »

RyJones wrote: post #168
mrtnmcc wrote: post #95

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 didn't give Jeff great direction on camera alignment calibration or setting the radio gain but he seemed to mostly figure it out. We're improving the UI based on his suggestions (it's open source so you can customize…

if I put two of these far-ish apart, can I get better 3d/4d data?

of course? not working directly together maybe, but put them at right angles and you get depth without relying on signal amplitude analysis.

did I misunderstand the question?

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