I have wanted a kraken for a while. I emailed them a few months back. I need to step up my videos. Maybe I'll be able to afford one soon. Happy holidays, folks. Thanks for the content, Sn0ren.🤙🏾
Growing up in the '70s and '80s we used to play a game called Fox and Hound using a transmitter and directional antenna There was a DJ named Wolfman Jack who operated a Pirate Radio Station The FCC tried to use an analog version of this very system to find him
A small correction is needed, I believe. Kraken SDR software uses “Correlative Interferometry”, not TDoA to determine direction of arrival - comparing phase differences to a tablecof known values tobget a bearing. But yes, that is related to time of arrival
You're absolutely correct and I think anyone interested should go read their wiki for a detailed explanation of how it works. I tried to stick to the basics of how direction finding is possible for any beginners but the subject is expansive.
The frequency range of the RTL-SDR receivers is 24 MHz -1766 MHz with default drivers, as is also stated on the KrakenSDR wiki. Not sure how well the direction finding software works at the upper end of that frequency range though, so that might be the reason why they state a lower top range elsewhere.
Awesome video.. just a weird idea.... i have on the attic of my house about 3 or 4 old TV2 / DR TV antennas, and i was wondering as there still are a ton of them around Denmark, could they maybe be used to anything "fun" regarding RTL-SDR
Well they’re really good at receiving tv signals coming from the direction they’re pointing - not much else. I’ve rebuilt an old tv antenna to make it suitable for ham radio frequencies once though.
How about use it to identify downlink channels of mystery drones, follow them, then maybe get close enough to see the uplink source. But our authorities ought to already have that sort of capability you would think. New Jersey, are you paying attention???
They use shortwave because it can reach much farther. It can still be triangulated but it requires using directional antennas (or much bigger arrays than will fit on a car) and measuring the direction from several locations on earth, which is usually easier to do in corporation with others.
A good explanation. I've used mine to locate a few bad actors. Our amateur radio club made a separate class for foxhunt events. You missed the point of using multiple different units to share data. Now fix your array layout shown in the overhead drone shot. 😄
@@sn0ren More specifically, at 0:03, and again at 10:16, antenna 3 is obviously way out of position being much too close to the CL of the vehicle. Maybe it was just temporary, IDK. Having placed this array many times it really jumped out at me. I also question the usable overall size of the array for the frequency. 104MHz has a reasonable minimum radius of 49cm and a preferred radius of 122cm. Of course, 122cm was not available on your Skoda vehicle but there was room to have a larger array that would have given a better resolution and quicker results. It may also be worth mentioning that the system not only gives direction and turn by turn directions but also indicates an absolute location of the source on the map. This location improves as more data is collected as you drive. Overall, a very good demonstration just a few fine points I observed.
@@BowWowPewPewCQ I think antenna 3 is in the correct place, it just looks misaligned due to the wires bundling off centre combined with the angle of the drone. And yeah it isn't an optimal setup for the specific frequency - It would certainly help placing them farther apart. It managed to get me close enough though. Glad to hear input from an experienced user unlike myself :)
There is nothing anonymous about radio transmissions, and a lot of radio receivers are tackable too. All you need to identify a transmission fingerprint is a a waterfall plot and the ability to see the pattern that every transmitter makes on transmitting dead air. Each transmitter has a unique fingerprint, and most of it will carry through a repeater with enough detail that I play a game where I try to say a caller's callsign (locally, not transmitted) before they do. Software can do this much more rapidly and accurately, but I don't have any problems telling people's radios apart, and can generally tell what radio one is using by the characteristics they all share on the waterfall chart. Anyways, the first 15 seconds of this video are so incorrect and ignorant that I won't watch the rest.
Being able of recognizing a repeating signal is not the same as identifying the origin or determining the location. Anyone who’ve listened to a ham radio repeater for a while can recognize the same guys just from their carrier. But if they never identify they will still be anonymous and their location will be unknown unless you actively track them down.
@@sn0ren "origin and location" are irrelevant unless someone is stationary and transmitting nonstop or very frequently at high power. Since very few people who can figure out what frequency to find listeners on are also inclined to troll or engage in CB talk, you're down to people who mistakenly transmit by sitting on their handset or smash a belt-mounted HT against their car interior.
Fantastic video! Foxhunting is a really cool way to learn SDR and I love everything about this video!!!
Don't forget, the Hack Rf portapack has a fox hunting mode built in, too. Dang. Maybe I'm supposed to do a video on that. Thanks again, brother. 🤙🏾🤙🏾
Using a single Yagi antenna? Are there any videos of people using this function already? 😁
I have wanted a kraken for a while. I emailed them a few months back. I need to step up my videos. Maybe I'll be able to afford one soon. Happy holidays, folks. Thanks for the content, Sn0ren.🤙🏾
Great job man. Love this.
Growing up in the '70s and '80s we used to play a game called Fox and Hound using a transmitter and directional antenna
There was a DJ named Wolfman Jack who operated a Pirate Radio Station
The FCC tried to use an analog version of this very system to find him
Yall better have not reported em lol, pirate stations are better than commercial licensed by far
A small correction is needed, I believe. Kraken SDR software uses “Correlative Interferometry”, not TDoA to determine direction of arrival - comparing phase differences to a tablecof known values tobget a bearing. But yes, that is related to time of arrival
You're absolutely correct and I think anyone interested should go read their wiki for a detailed explanation of how it works. I tried to stick to the basics of how direction finding is possible for any beginners but the subject is expansive.
You are a true hunter sir! Great video!
Oh man… Awesome video as always!!!
Endnu en faktastisk video, tak! - OZ7SAC holder rævejagt på 70cm d 8/1, kunne være lidt sjovt hvis du viste dem hvordan man rent faktisk gør :D
Perfect timing for this video considering we're watching the fools who run our country spaz out over drones with no clue how to handle them. Lol
Their response tells all. Its them for sure.
I'm mostly spacing on the awesome music
That's pretty neat. Sounds like fun.
Great video! Wonder if it’d be doable to do same with hacking RTL-SDRs and providing same external clock
Thanks for this video! Exciting technology!
I notice you mention it works up to 1.8Ghz. But the Kraken site seems to suggest up to 1Ghz. 🤔
The frequency range of the RTL-SDR receivers is 24 MHz -1766 MHz with default drivers, as is also stated on the KrakenSDR wiki. Not sure how well the direction finding software works at the upper end of that frequency range though, so that might be the reason why they state a lower top range elsewhere.
Awesome video..
just a weird idea.... i have on the attic of my house about 3 or 4 old TV2 / DR TV antennas, and i was wondering as there still are a ton of them around Denmark, could they maybe be used to anything "fun" regarding RTL-SDR
Well they’re really good at receiving tv signals coming from the direction they’re pointing - not much else. I’ve rebuilt an old tv antenna to make it suitable for ham radio frequencies once though.
Thank you for this interesting video! vy73 from Hamburg/Germany, Dietmar, DL4HAO :) (new subscriber)
I wish they would publish the passive radar code again…
How about use it to identify downlink channels of mystery drones, follow them, then maybe get close enough to see the uplink source. But our authorities ought to already have that sort of capability you would think. New Jersey, are you paying attention???
oh this is awesome
Great video
Can you show how to do foxhunting using hackrf one h4m with esp32 ? In the next coming video 😊
That's why number stations in shortwave band use frequency under 24mhz ?
They use shortwave because it can reach much farther. It can still be triangulated but it requires using directional antennas (or much bigger arrays than will fit on a car) and measuring the direction from several locations on earth, which is usually easier to do in corporation with others.
can u help me track down in Sweden too
yay
Hæy, vi skal da være buddies!
Where can we buy the spacing template tool or the 3d files to make it?
Thanks for reminding me! I've put a link in the description to where you can download the 3d files.
Make flipper zero using esp32
interaction
Finally the hamboomers can find those darn ham pirates without license!!
A good explanation. I've used mine to locate a few bad actors. Our amateur radio club made a separate class for foxhunt events. You missed the point of using multiple different units to share data. Now fix your array layout shown in the overhead drone shot. 😄
What’s wrong with the array layout?
@@sn0ren More specifically, at 0:03, and again at 10:16, antenna 3 is obviously way out of position being much too close to the CL of the vehicle.
Maybe it was just temporary, IDK. Having placed this array many times it really jumped out at me.
I also question the usable overall size of the array for the frequency. 104MHz has a reasonable minimum radius of 49cm and a preferred radius of 122cm. Of course, 122cm was not available on your Skoda vehicle but there was room to have a larger array that would have given a better resolution and quicker results.
It may also be worth mentioning that the system not only gives direction and turn by turn directions but also indicates an absolute location of the source on the map. This location improves as more data is collected as you drive.
Overall, a very good demonstration just a few fine points I observed.
@@BowWowPewPewCQ I think antenna 3 is in the correct place, it just looks misaligned due to the wires bundling off centre combined with the angle of the drone. And yeah it isn't an optimal setup for the specific frequency - It would certainly help placing them farther apart. It managed to get me close enough though. Glad to hear input from an experienced user unlike myself :)
This is legal civilian trickle down technology.
Imagine what mayhem your average bad actor could cause with this tech.
There is nothing anonymous about radio transmissions, and a lot of radio receivers are tackable too. All you need to identify a transmission fingerprint is a a waterfall plot and the ability to see the pattern that every transmitter makes on transmitting dead air. Each transmitter has a unique fingerprint, and most of it will carry through a repeater with enough detail that I play a game where I try to say a caller's callsign (locally, not transmitted) before they do. Software can do this much more rapidly and accurately, but I don't have any problems telling people's radios apart, and can generally tell what radio one is using by the characteristics they all share on the waterfall chart.
Anyways, the first 15 seconds of this video are so incorrect and ignorant that I won't watch the rest.
Being able of recognizing a repeating signal is not the same as identifying the origin or determining the location. Anyone who’ve listened to a ham radio repeater for a while can recognize the same guys just from their carrier. But if they never identify they will still be anonymous and their location will be unknown unless you actively track them down.
@@sn0ren "origin and location" are irrelevant unless someone is stationary and transmitting nonstop or very frequently at high power. Since very few people who can figure out what frequency to find listeners on are also inclined to troll or engage in CB talk, you're down to people who mistakenly transmit by sitting on their handset or smash a belt-mounted HT against their car interior.
Any child knows everything you say up until the 4 min mark...
fedoras are so lame looking
Much respect for you and your channel, but only someone in a very cold climate would suggest sticking a computer to the top of a huge heatsink 🫤
It is very cold here 😅
@sn0ren
I'm in South Australia, the temp today is 37*, in Feb we get a week of 45*.
Heat 🔥sinks are important 🤪