This has me thinking that fiber optic drones using this technology might be able to discover the location of signal-jamming equipment. But only for the good guys.
QuadRF can spot drones and see WiFi through my wall
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Re: QuadRF can spot drones and see WiFi through my wall
#72One day I want to build something like this, except for sound. It would be great to get a heading and distance for where a sound is coming from. This could be both for small scale things (e.g. which part of this is squeaking?) or large scale (e.g. is that booming noise coming from the construction a few blocks away?)
There are products in this space, eg https://www.crysound.com/
Very cool stuff, can be used for drone detection at up to 200m. Accuracy is not super good, unless you make mic spacing a bit large.
Re: QuadRF can spot drones and see WiFi through my wall
#73Earlier quoted context omitted.
Whos paying the telcos for those 5G connections and also has the FCC been degraded so much that they would allow for undeclared radios in consumer products?
> has the FCC been degraded so much that they would allow for undeclared radios in consumer products? Well... most TVs already have a WiFi/BT chipset for stuff like advertisements or, especially with Apple, high-bandwidth video streaming. There is already a radio module present, but (IIRC) you don't have to disclose what exactly that module is capable of.
You definitely are required to disclose what frequencies are used and at what power.
Re: QuadRF can spot drones and see WiFi through my wall
#74One day I want to build something like this, except for sound. It would be great to get a heading and distance for where a sound is coming from. This could be both for small scale things (e.g. which part of this is squeaking?) or large scale (e.g. is that booming noise coming from the construction a few blocks away?)
I've seen http://soundryx.com/
Re: QuadRF can spot drones and see WiFi through my wall
#75Earlier 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/
Just like eBay, an Amazon listing for a certain price does not mean the item is actually /selling/ for that price -- especially with badly-coded dynamic re-pricing algorithms hooked into listings these days.
Re: QuadRF can spot drones and see WiFi through my wall
#76I just kinda skimmed through it, so it detects drones in sky? Am I understanding this correctly? That might have some defense application considering what's going on in Eastern Europe right now.
Very much so. I had a friend who'd just gotten out of EE school as a non-traditional student who was working for a company that was making radars for tracking drones maybe five years before the 2022 Russian invasion. That was an active system, similar in concept to the radars used in air defense system just scaled down and faster acting. The one in this article is a passive system that sees the transmitter on the dro…
> that sees the transmitter on the drone. The comm link is the obvious weak spot on the drone
Isn't most drones run by fiber optic nowadays around the front-lines though? Can't really jam those, but maybe still detect it somehow?
Re: QuadRF can spot drones and see WiFi through my wall
#77Earlier quoted context omitted.
Whos paying the telcos for those 5G connections and also has the FCC been degraded so much that they would allow for undeclared radios in consumer products?
> has the FCC been degraded so much that they would allow for undeclared radios in consumer products? Well... most TVs already have a WiFi/BT chipset for stuff like advertisements or, especially with Apple, high-bandwidth video streaming. There is already a radio module present, but (IIRC) you don't have to disclose what exactly that module is capable of.
Uhh yes you absolutely do need to disclose exactly what each is capable of. Each radio must itself be approved by the FCC and documented
Re: QuadRF can spot drones and see WiFi through my wall
#78Earlier quoted context omitted.
Whos paying the telcos for those 5G connections and also has the FCC been degraded so much that they would allow for undeclared radios in consumer products?
More likely 4G LTE MTM ( https://www.verizon.com/business/products/internet-of-things... ). It's dirt cheap and paid for by the vendor of the device it is in (usually) in the name of 'telemetry'. I've seen so many random industrial devices and parts come into our plant that have their own cellular it's wild.
You really think these are in TVs going unoticed and someone is paying for each radio?
Re: QuadRF can spot drones and see WiFi through my wall
#79I just kinda skimmed through it, so it detects drones in sky? Am I understanding this correctly? That might have some defense application considering what's going on in Eastern Europe right now.
It detects drones which send out RF signals at the same frequency band. Most drones used in Ukraine are tethered with thin optical wire exactly because one of the first anti-drone measures was to simply jam them at the frequencies the operators used.
There are some more advanced anti-drone measures at work: Like blasting them with directed high-energy microwaves to destroy the circuits.
Re: QuadRF can spot drones and see WiFi through my wall
#80One day I want to build something like this, except for sound. It would be great to get a heading and distance for where a sound is coming from. This could be both for small scale things (e.g. which part of this is squeaking?) or large scale (e.g. is that booming noise coming from the construction a few blocks away?)
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