Receiving voice transmissions from GPS satellites || Satellite reception pt.10 

I saw this voice transmissions in another video three years ago (video "Ретрансляция китайских раций системой спасения Cospas-Sarsat" in russian). And in the video author metioned that all voice transmissions are generally in chinese. Also he mentioned that duiring LEOSAR and MEOSAR passes over europian part of Eurasia, number of chinese voices reduces drastically. In the commets someone wrote that "But we have MPT1327 trunk system, and it has frequency 406 Mhz. And we have a regulator permit on this system & frequencies". I suppose that some "digital transmissons" may be from that sort trunk systems from Russia, because some frequency ranges in Russia may have two-level system of usage, with primary users and secondary users. Also I like your content. Subscribed. ;)

Wow. I am actually responsible for maintaining the registrations for 80 of these beacons for boats, an aircraft, and a ton of field personnel. I had no idea that the signal was literally just "rebroadcast" I thought that the satellites were actually processing the data themselves and then sending the data back to earth. I learned something big today. Subscribed and if this is the type of content that you're going to be making, stuff of this kind of technical nature, I am definitely subscribing and looking forward to more!

0:19 is in Minnan dialect of Chinese, it's roughly saying: "D*mn, F**k your m*m, my truck bed is out of electricity"

I love the slow pan and silence at 16:41 and then the hard cut. I'm not sure why that made me laugh as much as I did. Awesome video, stop (don't) tempting me to spend more money that I don't have to start getting into SDR and HAM radio realm.

I had heard rumors that people were doing this but had never seen it on video despite searching online. Totally awesome video, and as far as I can tell you're the first to report about this on video!

Great video as always, amazing work...

I love technology so much. This is so cool.

1:14 Casualty: "MAYDAY - I crashed into the WIndows 95 screensaver hills" RCC: "I'm sorry you need to upgrade to Windows 11"

Great video (as always). Thanks!

Great video very interesting. In the past I have personally seen low bandwidth rogue data streams uplinked to geo sats.

Wow mluvíš hrozně dobře anglicky, vůbec jsem nevěděl že mluvíš česky do ty doby něž jsem viděl tabulky xd, super video

6:55 is so great haha. they were looking for you!

You got a new sub here. Awesome content.

Ive actually accidently picked up a LEO sarsat before whem doing L band stuff with that becon in the centre and the slightly weaker repeater sidebands.

Another amazing video, keep up the great work

At first I thought one would need to transmit an enormous amount of power (many tens or hundreds of Watts) to unintentionally hijack a transponder 20.000 km away. I did some calculations. At 406 MHz (lambda = 75 cm is a good enough approx), the FSPL is -170.5 dB for a MEO satellite orbiting 20.000 km above the Earth. Assuming the Earth is a disc of radius 6000 km (of course IT IS NOT), the satellite's antenna gain is approx 16.5 dBi. Assuming the transponder has a NF of 0 dB, with a noise density of -174 dBm/Hz, only +30 dBm of transmit power from the Earth is enough for a 10 kHz signal to be 10 dB above the NF. Of course the transponder's NF will be higher than this, but actually only a few watts at the wrong frequency is enough to be heard by the transponder. Impressive ! I hope those interferences do not render this system unusable as it can save lives (and also costs money). According to Wikipedia, 406 MHz have 5 Watts (37 dBm) of TX power. Older 121.5 MHz beacons transmitted at only 50 mW !

A SDR Play RSP DX and SDR Angel Software is Perfect for this!

did you bring the fridge just for reflecting? :D anyway, thanks for these informative videos about interesting topics with high quality examplification!

people think a satellite does only one thing, that's not how that works, think of it - they call it a Bus- as a shelf, where you install all kind of radio equipment, most racks will be powered for GPS and its back up system, while you can still have a couple more racks free for other applications, like radio transmission, communications and all, just like research satellites embarks all kind of equipments to measure solar winds, detect signals, take all kind of images all in one box.

This is really cool!

Do you have a link for the transponder frequency list you were using? Cheers.

I'd love to try this but I don't have a green fridge

Very interesting!

Nice video

Nice video! Subscribed! 73, M1GEO.

Very interesting video and information. What is the main SDR you use for the reception of these satellites, also where do you get your LNB and down converter equipment? Thank you.

255.55Mhz FM is a very active with satellite bounce communications. Most communications are in Portuguese. However, there can be heard some Spanish and English, as well. Please tune in and enjoy thed chaos.

Interesting video, thanks. I wonder if it's possible to capture some of these signals with SDR and knowing the satellite orbit then identify the origin with some complicated maths.

1:34 it is easy, it is 38°15′00.5″N 122°24′38.9″W

from 17 to 21 seconds, i heard some Hokkien swear words. either from Taiwan, Malaysia or Singapore

Doesnt the reflection off the dish change the handedness of the polarisation?

What "radio" settings did you use please? Thank you.

0:17 the sound is from Taiwan, what he said was "shix fucx , my truck bed is out of battery."

What are the input frequencies to this "repeaters"? I found some info that says 121,5 MHz (analog) and 406,025MHz (digital data). I wonder is there any CTCSS code or something.

'People of Earth, your attention please! ...'

So if ur receiving can you transmit? Like a modern HAM kinda thing?

interception and decoding of thuraya sputnik communication signal by hackRf receiver and listening to voice message???

3:00 hardcore heli rescue 🤣

Which SDR program or hardware are you using?

Why did I know, you are from czech republic before looking at your channel 😅

Thanks.

Pedant Alert: a simple satellite transponder merely transposes the uplink frequency band to a downlink band.

So you are saying, that those little yellow things are reaching GPS satellites, that are orbiting at 20000km altitude?

Cool

6:56 Left turn day on Base. IYKYK

Is there one that ppl can use like a ham relay?

Do you know why the video for wifi antenna got so popular? Yeah because many people need to have long-range wifi solution. You know, definitely not stealing the signal from across the street.

od kdy jseš čech? až teď jsem si všiml..

This is what you get by wanting radio device to be 'without antenna' making it yell in every direction, mostly into soil, body and aliens in the sky.

How to end homelessness: 1. Interfere with emergency and forbidden frequencies 2. Get in jail...

Thunderbird 5 binternational rescue

These voice sounds like illegal repeaters used by taxies or trucks in Taiwan,LoL.

Meteor-M2 is still working?

"There are voices . . ."

Chinese talking in hokkien language on the radio transmittion! 🤣🤣🤣

SRD dongle a lap top or mobile phone thats all you need .

I have a whole lot of surplus DirectTV dishes, what do I need to use to replace the horn on them to use them with my DX-390 and DX-398 PLL Shortwave receiver? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-tDHFdtMtfVc.html

Homeboys sayinf K7S5A CQ

First voice sounds like Portuguese.

GPS trasmitting Audio 😂😂😂 SUSPECT

Think about Geo static. Rocking Earth on its polar axis. Where it static, still? Only within central area. Edges are affected by wobble of Earths spinning mass, up and down as its rotating. Like a top as it goes out of spin energy, wobble like Jet stream comes into effect. It can’t fall over to anywhere it’s in a controlled field of influence of the Sun. random dips and stuttering anywhere on the globe. Weather and many confused sea creatures, unexplained , sudden, non tidal, Waves of sea, even ponds, by the rocking stop and reverse. Plane in flight optically , stopped , 1 1/2 minutes and continued at excess speed. Not the plane, the Earth surface observer saw it as , not them . Can a plane stop, for a minute and a half in transit in the sky? Obviously not.

Starlink will probably replace this system, being low earth orbit the transmission doesn't't have to have as much power and 2 way communication would be easier.thet already working with T-Mobile to use Starlink for coverage. I'm sure Elon is already working on a civilian SOS system. It might even replace Onstar, it's funny years ago people thought OnStar worked thru the satellites they had no idea it was dependent on analog cell towers. I have it in My 01 GMC Yukon but OnStar will never work in that vehicle again because it was analog only and no analog towers are working in the USA today. GM won't provide upgrade for the Cellular Transceiver that's in the dash for anything made about 2005 and before for some reason. The Onstar call center didn't even know this when I tried to activate it? I purchased it a year after Analog was turned off in the USA. Anyway as long as Starlink keeps growing it will replace so many satellites probably even Video service, can you imagine getting live TV anywhere on earth thru the same company? I have Starlink on my RV I use.it to stream TV because DirecTV and Dish network are insanely expensive for the few months a year I use it. And they are really shady when you buy Mobile hardware (Yes you have to Buy Mobile specific equipment) once you activate it it's no longer yours you must send it back to them if you cancel service. Because they treat all equipment the same? I won't feel sorry when technology like Starlink makes them obsolete 😊 sorry for the rant I grew up in a different time when if you purchased something it's yours forever.

Wish I was in Tijuana.... Eating barbecued Iguana.

Pringles can,.. refrigerator. 🎉 Take the supports out of the back of a hood of vehicle and you got another reflector under the transponder

Microwave auditory effect.... Synthetic telepathy as the US Army called it. Thanks satellites!

Yes they are saying do not come to planet earth full of evil people

This frequencies are allocated for search and rescue usage worldwide so this are certainly people illegally using those frequencies for their two way radios.

Sounds like they're speaking Chinese

Toilets in space. Come on man.

So delete the upload and render it again.

rick rolling on sats?

Nice video RAFIQUE MASTOI DG Khan Pakistan 🏝🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰🇵🇰

either I love huffing lead from melting batteries and eating cadmium when oil painting to relax and too drink to watch the hole thing but - *this guy is like gengss kan... we all wish his DNA was in our blood line cauer be is as dope as a full bridge teditifirr dax*

Bruuuuughhhhhhhhhhhhh

They can target u and hear what you think , when someone with morals and able so bad for good gets ahold of this the other side is screwed

The f

Bwahahahhahahaha! Stop the comedy routine. Its probably just a base station some place. Satellites eh? The kind that orbit Uranus.

all i can hear is your mouth all oer this video what about letting us hear for a while.

Hahaha what utter nonsense

"some" satellites or dish antennas , not "a bunch of". They aren't flowers or keys... You use "bunch" to describe a number of things, typically of the same kind, growing or fastened together.

Grammar Alert! ..... There ARE voices , blah, blah blah. Sorry. Currently boycotting channels who can't be bothered to get their grammar correct. Hint: IS is singular. ARE is plural.