Track Down Radio Transmitters / KrakenSDR

[@TalkingSasquach]

Fantastic video! Foxhunting is a really cool way to learn SDR and I love everything about this video!!!

[@Global_News_UK]

Looking forward for your video on this...

[@s1nister688]

I loved your previous videos. There are so many turorials on KrakenSDR but yours are just next level. Really fun to watch!

[@TheGeekiestGuy]

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.🤙🏾

[@dafoex]

Nothing is more cyberpunk than driving around with five antennas on your car

[@lilacscepter223]

Awesome collab, thanks Lab401. Actually came from the shop. Had to subscribe immediately!

[@TheGeekiestGuy]

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. 🤙🏾🤙🏾

[@donniem6783]

Using a single Yagi antenna? Are there any videos of people using this function already? 😁

[@TheGeekiestGuy]

@donniem6783 i haven't found one but I also haven't been actively looking. It will be a single yagi antenna. I wish more people around here had hack rf's it would be fun to use a single clock input and have an array of them.

[@brandon7219]

@TheGeekiestGuy id watch it

[@TheGeekiestGuy]

@@brandon7219 I'm on it. We'll see what I can do. 🤙🏾

[@88njtrigg88]

​@@TheGeekiestGuyPlease do.

[@MrTalon63]

I recently found your channel, and I'm impressed how you are able to explain radio topics in terms that are understandable by a random passerby or someone who want to get into radio. At first, I thought you're a Polish ham due to SN prefix, but I suppose you're from DACH country based on your accent. Either way, keep it up! SP0KS

[@sn0ren]

Thanks! 🤘 I know it’s a bit confusing that my channel name looks like a call sign, but it’s just a nickname derived from my actual name. I’m from Denmark 🇩🇰 and my callsign is OZ3SR

[@charlesurrea1451]

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

[@urs915]

Yall better have not reported em lol, pirate stations are better than commercial licensed by far

[@skipperbentdk]

Finally the hamboomers can find those darn ham pirates without license!!

[@bodstrup]

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

[@sn0ren]

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.

[@ukaszwieczorek211]

Oh man… Awesome video as always!!!

[@eythymiosiosifidis5441]

You are a true hunter sir! Great video!

[@ashleehouse5204]

That's pretty neat. Sounds like fun.

[@EmhanceResponderDevelopment]

Extremely well explained! Awesome! - no i need to make it man portable

[@Indigenous_Patriot_1175]

another tool to add to my arsenal . Thanks again for another great video!!

[@Jeremiah.o.A.T]

Great job man. Love this.

[@chris12x1]

Hopefully, someone will create a budget version of KrakenSDR

[@CaptZenPetabyte]

I need one of these for when the ZombPoc happens

[@TallTexasGMan]

When using the VHF frequencies 148 MHz and lower the standard Kraken antennas do not have enough element length to achieve 1/4 wavelength. I've had multiple issues getting proper capture to work with our VHF foxes due to this issue.

[@sn0ren]

Yeah it seems to be just beyond its capability.

[@brandon7219]

oh this is awesome

[@AntonMadness]

I'm mostly spacing on the awesome music

[@PatrickOnEngineering]

Great video! Wonder if it’d be doable to do same with hacking RTL-SDRs and providing same external clock

[@MphoMashile-p6x]

This is a great video. I discovered your channel a few days ago and I must say, you have very informative content. I have watched almost all your videos. I am curious... can the kraken simultaneously track down multiple transmitters on the same frequency in real time?? I would like to use it on my farm to track down kettle in real time.

[@sn0ren]

Thanks! I think a better solution for cattle tracking would be to use some LoRa devices with built in GPS, that can send each of their positions to a central receiver. LoRa devices can be loaded with the open source project Meshtastic, which could also be used for this, but there is also other software that can be run on the same devices.

[@MphoMashile-p6x]

@@sn0ren Thank you for the advice. I will consider that option. However my question still stands though. It doesn't necessarily have to be for kettle tracking. I am curios to know if it can track multiple transmitters simultaneously.

[@ML-cr7ds]

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

[@forextraderradioman]

Thank you for this interesting video! vy73 from Hamburg/Germany, Dietmar, DL4HAO :) (new subscriber)

[@TomSherwood-z5l]

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???

[@freetechdk]

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

[@sn0ren]

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.

[@donniem6783]

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. 🤔

[@sn0ren]

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.

[@donniem6783]

@@sn0ren Thanks for responding 👏

[@huboz0r]

Time to find some new background music

[@quadmods]

I wish they would publish the passive radar code again…

[@DirtyPlumbus]

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

[@notyouraveragegoldenpotato]

Their response tells all. Its them for sure.

[@محققة313]

How about uploading a video to teach us the Python language, if possible?

[@waylonk2453]

Love the new music!

[@sparkybluefox]

Great presentation ! BRAVO ! 73 AB8B

[@rizwansami6679]

That's why number stations in shortwave band use frequency under 24mhz ?

[@sn0ren]

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.

[@FirstToken]

Numbers stations do not protect the source of the transmission, rather they protect who is receiving the transmission. There are many ways to geolocate the source of a numbers station, and there always have been. But, few (well, outside the hobby community) care that much about the source location. If you want to see one of the ways the US pinpointed numbers station transmission locations, search for information about the AN/FLR-9 and the AN/FRD-10

[@SNSISNSJISEJSJS]

Great video Can you show how to do foxhunting using hackrf one h4m with esp32 ? In the next coming video 😊

[@swedishCBchannel]

can u help me track down in Sweden too

[@FlandersKen]

yay

[@ladedk]

Hæy, vi skal da være buddies!

[@tdswindlertdameritrade]

Great video

[@BowWowPewPewCQ]

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]

What’s wrong with the array layout?

[@BowWowPewPewCQ]

@@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.

[@sn0ren]

@@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 :)

[@Dazdigo]

Where can we buy the spacing template tool or the 3d files to make it?

[@sn0ren]

Thanks for reminding me! I've put a link in the description to where you can download the 3d files.

[@MR_mystery]

Here from insta

[@Ichikura2]

Anyone else think he looks like obi wan kanobi....just me ok well he dose

[@andyindahowz4289]

interaction

[@Actiongrow37]

Make flipper zero using esp32

[@ryanmigliori660]

This is ham radio in 2024. What's your callsign what's your call sign what's your callsign. They ask this every 20 senconds

[@jonr6680]

This is legal civilian trickle down technology. Imagine what mayhem your average bad actor could cause with this tech.

[@buckstarchaser2376]

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.

[@sn0ren]

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.

[@buckstarchaser2376]

@@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.

[@mlentsch]

Any child knows everything you say up until the 4 min mark...

[@dextardextar]

fedoras are so lame looking

[@edwardfletcher7790]

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 🫤

[@sn0ren]

It is very cold here 😅

[@edwardfletcher7790]

@sn0ren I'm in South Australia, the temp today is 37*, in Feb we get a week of 45*. Heat 🔥sinks are important 🤪