How to make radio scanner from smartphone with RTL-SDR DVB-T dongle

[@rubenorosco1465]

Excellent, I have been wanting a spectrum analyzer, Thank You!!!!

[@PanHowie]

"Hello everyone tutaj I'm gonna show you" :D Dzięki za materiał :) właśnie szukam jakiegoś odbiornika do częstotliwości lotniczych i tak trafiłem na ten materiał. Przydatny

[@prabhakarrao4922]

Excellent demo. Thank you kindly .

[@jisa98]

Nice demo, thanks amigo!

[@RayDabkowski]

Note how "receiver" is misspelled on the case. Quality product.

[@justanengineer5599]

yeah, good point :-)

[@omsingharjit]

6:10 then how to identify that gap before buying it first ? And what really mean by that gap ? Is that missing frequency range gap?

[@justanengineer5599]

Hi. Search for RTLSDR v3. The cheapest DVB-T dongles have the gap - look here osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

[@acestudioscouk-Ace-G0ACE]

Very useful video, thank-you!

[@เดินไฮโล]

Set the receiver to 433 mhz frequency and press the remote control. The receiver can receive the frequency far. about how many meters

[@justanengineer5599]

is this kind of question? because i do not understand what you are writing

[@mauromejias8840]

Can you convert this radio scanner to intercept only VHF or UHF band nearby ?

[@justanengineer5599]

yes it can do it. You select manually the frequency you want to hear between 25-1750MHz

[@dtesta]

You did not really scan? You just put specific frequencies. A real scanner sweeps through min and max set frequencies, looking for transmissions. Like scanning from 400 to 470MHz. Can the application do that?

[@justanengineer5599]

Yes, this SDRTouch application can do it. It has "scan" option to automatically detect some signals

[@The_Auther]

how do I record the 433Mhz signal and send it to the URH. for the analysis process, and then send it to arduino and record in disgispark...

[@justanengineer5599]

There is the "record" option in SDRTouch android app that can create WAV file for further analysis with other programs like URH (can import uncompressed WAV files) or Audacity on the PC but I haven't tried this scenario. I would suggest to use the PC and URH software with RTLSDR dongle from the begininng to capture and decode radio sequences.

[@The_Auther]

@@justanengineer5599 i will try... tks

[@UzioPL]

czy dvbt mediateka też mogę podłączyć do smartfona czy tylko do laptopa/ pc-ta?

[@justanengineer5599]

to zalezy czy ma chip realtek w srodku tutaj masz opis co moze zadziałac : osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

[@rahmanbabaofficial2009]

Great video, Sir please tell me,this rtl sdr use for the mobile calls listening..?

[@justanengineer5599]

mobile phone calls are encrypted but you can listen any kind of unencrypted analog like PMR or aircrafts.

[@freezerfreezer9097]

Another hint... when doing a video in English you might want to get into the program and put it in English so all the controls coincide with what you're saying. You can always switch it back to your language later. Just a thought

[@justanengineer5599]

thx bro, I'll keep that in mind. Point is 30% of viewers are Polish :-) there is also translated version

[@Exceedvictory]

Hey buddy. Quick question… There’s a frequency in my home that sounds like uhf or vhf that is either somehow about to read my mind or hear the low waves of me thinking out aloud. Have you ever heard of this and any idea on how to combat such a thing? Thanks.

[@justanengineer5599]

Human brain emits electromagnetic frequencies between 1Hz and 100Hz. However there may be something that can interfere with the brain : engineering.mit.edu/engage/ask-an-engineer/can-brain-waves-interfere-with-radio-waves/

[@lonelypigeon7562]

@@justanengineer5599 if someone asked me sincerely "excuse me" or "hi....I got a question"....I would be more than happy to help.

[@mrttvr6766]

Hello, thank you for the information. The question I will ask you is very important to me. I would be very happy if you reply. Can this device send sound frequency with the (soundfrequncy) application. Is this antenna both a sender and a receiver? I am thinking of buying this device. Thank you from now.

[@justanengineer5599]

Hi, this device is only a receiver. It allows to listen any kind of radio transmission on frequency between 25MHz and 1750MHz. It cannot transmit any data/sound etc.

[@mrttvr6766]

@@justanengineer5599 thank you so much

[@zbyszekolko3998]

What antenna should I buy to monitor 600-700MHz band?

[@justanengineer5599]

you may use dvb-t passive antenna with appropriate adapter (SMA) for rtlsdr dongle antenna socket. It should NOT have an amplifier. It maybe even Yagi type antenna

[@zbyszekolko3998]

@@justanengineer5599 Thank you for pointing me in right direcion. Unfortunately DVBt and yaggi I could find are too clumsy. I need smthng really handy and mobile. Maybe LTE router ones or even any piece of wire will go?

[@justanengineer5599]

you may find small telescopic dipoles on www.aliexpress.com the are sold separately as "rtlsdr dongle antenna set"

[@lakshaynarayan1853]

So Can I Listen To The Buzzer UVB-76 At 4625 KHz ?

[@justanengineer5599]

Hi, My USB dongle was supporting only 25MHz+ so it is unable to listen to 4,625MHz frequency. However there are some hacks to reprogram it to lower frequencies like shown here : www.rtl-sdr.com/new-experimental-r820t-rtl-sdr-driver-tunes-13-mhz-lower/ or here www.rtl-sdr.com/direct-sampling-mode-hardware-modifcations/

[@sa6kod154]

Buy a tecsun pl 600. Much MUCH better sensitivity ( receives more signals that’s less strong )

[@lakshaynarayan1853]

@@sa6kod154 Thanks Bro!

[@lakshaynarayan1853]

@@justanengineer5599 Thank You :)

[@sa6kod154]

Lakshay Narayan actually, if you have money get a 660. But it’s s little bit more sensitive. And has more features. I have it. Very happy. Good buy. Comes with air band too. But the 600 is awesome too but, if you can het a 660. You won’t regnet it with the features.

[@solutionweb1576]

How can I capture Lf signal? Can I use rtl sdr v3?

[@justanengineer5599]

Yes, rtlsdr v3 is needed.

[@radekzajdel8486]

Czy przy pomocy tego urządzenia można zlokalizować kluczyki od samochodu ? Kluczyk bezdotykowy ?

[@justanengineer5599]

Lokalizowanie czegokolwiek wymaga tzw. anteny kierunkowej dostrojonej do danego pasma. Tak jest to możliwe ale nie w prosty sposób. Kluczyk musiałby co jakiś czas wysyłać dane - normalnie kluczyki aktywują się w odległości kilku metrów od pojazdu w celu gotowości do otwarcia drzwi pojazdu ( samochód wysyła "sygnał rozpoznawczy" do kluczyka a ten odpowiada identyfikatorem o ile jest właściwy i wtedy samochód rozbraja zabezpieczenia i otwiera drzwi). Jeśli kluczyk jest w większej odległości od danego pojazdu to nie odbiera sygnału z samochodu, ale jego sygnał może zostać podsłuchany i przekazany na odległość przez złodzieja - tzw. relay attack. Co do anteny kierunkowej - antena typu YAGI podobna do takiej : m.polish.uhfvhf-tvantenna.com/quality-10630900d-8dbi-directional-433mhz-antenna-lightweght-433-mhz-antenne-all-weather-operation

[@billcardwell9954]

The antenna connector is NOT an "RCA" connector, it is an "F" connector. RCA connector is an audio connector, like on the back of a audio amplifier.

[@justanengineer5599]

Yes it is (SMA in fact). It was already pointed out in the comments couple years ago. Scroll down...

[@zhalberd]

That is an SMA connector on antenna not rca no?

[@justanengineer5599]

it is sma

[@mariuszzawierucha1310]

Cześć Adam! Czy ten odbiornik faktycznie korzysta z zakresu do 1760 MHz? Czytałem opinie , że może co najwyżej wyciągać 1090 MHz.. czy możesz potwierdzić proszę?

[@justanengineer5599]

cześć! Ten odbiornik który pokazuje działa aż do 1760MHz. Sprawdzałem go z innymi aplikacjami na PC takimi jak GQRX , spokojnie łapie te częstotliwości

[@mariuszzawierucha1310]

Świetnie! Dziękuję za odpowiedź!

[@cen7ury]

What about a phone with an internal radio receiver like a galaxy s9?

[@justanengineer5599]

Even though the S9 is a great phone, it is still just a phone - it has fixed internal radio receiver to some particular bands like 900/1800/850/2100/2400/2600MHz along with internal antenna which is also designed to work with such bands. To cover full bands from 25MHz up to ~2GHz you need this USB dongle which is Software Defined Radio. It uses computing power of CPU inside the S9 to make Fast Fourier Transform to decode the signal from raw radio transmission. Because it is "software" you can tune it to any frequency you need (of course there are some limitations of chips inside USB dongle) and analyze the signal or capture it to some WAV format for further processing. You can also attach telescopic antenna with RP-SMA socket to USB dongle to tune directly to particular frequency (en.wikipedia.org/wiki/Whip_antenna). In comparision internal antenna of Samsung S9 is fixed to some frequency and cannot be modified , that is why you need external device attached to your smartphone.

[@cen7ury]

@@justanengineer5599 Granted, however, apps such as NextRadio use a pair of wired headphones plugged into the 3.5 mm jack to tune FM (could be AM as well, would have to check). Given a suitable antenna plugged into the 3.5mm jack, what do you think?

[@justanengineer5599]

Samsung S9 uses following chips : Qualcomm SDM845 Snapdragon 845 (USA) - www.qualcomm.com/media/documents/files/snapdragon-845-mobile-platform-product-brief.pdf , or Exynos 9810 Octa (EMEA). None of these chips supports Software Defined Radio function it is only FM Radio chip which operates on 87.5 to 108.0 MHz. APPs like "NextRadio" are using Samsungs API to access it : NAB FM API

[@SheltonDCruz]

Thanks!

[@cw2gtc]

RX & TX w/phone?

[@justanengineer5599]

for tx only EvilCrow can do it from what I know

[@FrancisLitanofficialJAPINOY]

RX only for RTL SDR like radio scanners

[@uio86a]

Can I copy the car digital key to my phone and open the car door with my phone?

[@justanengineer5599]

only with the phone no, but you may be interested in reading this github.com/trishmapow/rf-jam-replay it will give you a clue what you need to do things you mentioned

[@bobbymalta73]

Hello can you Scan Air Band Signal Please?

[@justanengineer5599]

Yes the application has SCAN button so it can scan automatically beginning from your frequency setting

[@zebezenga9944]

Start 25mhz. No ssb no am no sw no lw no mw no lw 1khz-1700mhz is very good

[@slimpeabody7012]

You need a different antenna for HF.

[@justanengineer5599]

this is correct. I have only simple telescopic antenna and it is not efficient at all. However it is portable and suitable for most scenarios.

[@iceyes1979]

Can you tell me wich antenna should I buy?

[@justanengineer5599]

Hi, I would buy the antena with largest number of sections. Something like 6/7 section telescopic antenna would do just fine. Check if antenna has appropriate connector - must match your RTL-SDR dongle. Mine had RP-SMA male connector.

[@iceyes1979]

Thank you Adam

[@don1estelle]

Its not RCA its SMA

[@justanengineer5599]

You are right, it is the SMA male connector. It was one of the first comments to this video, scroll down pls :-)

[@dakidubbad.7645]

Missed calls???

[@ronelbuzer2022]

121.5 is standard aircraft frequency

[@guilhermeneto2035]

Suele

[@guilhermeneto2035]

Baixar aplicativo de rádio

[@NZVideos_]

No 122.8 is

[@aubreyk.5927]

can it also transmit too like an actual uvf/uhf radio ?

[@justanengineer5599]

no it is only a receiver

[@johnybrawo647]

cześć da się na czymś takim słuchać cb radia?

[@justanengineer5599]

tak. da się

[@johnybrawo647]

@@justanengineer5599 dobra a jak da się odbierać to czy da się też nadawać? czy trzeba coś dokupić, może drugi takowy jako nadawanie?

[@justanengineer5599]

rtlsdr na usb są tylko do odsłuchu. Jak chcesz coś nadawać to musisz mieć sdr transceiver coś jak Hack RF

[@johnybrawo647]

@@justanengineer5599 ok dzięki, polecasz jakiś zestaw na wypadek W?

[@justanengineer5599]

chyba najprosciej to baofenga kupic

[@GhostOfDamned]

To teraz gliniarzy bede podsluchiwal

[@justanengineer5599]

okolice 460 MHz :-)

[@ank0kulion_780]

Apk name?

[@justanengineer5599]

Sdrtouch

[@EdwardVanNatta]

I am looking for about your product place lace me a message. When I post this , I am looking for more on this . Can Find this at and much this run

[@justanengineer5599]

have you tried to look for it on www.aliexpress.com ?

[@stevecobb76]

this is not "radio scanner from smartphone". this is adding a usb rtl-sdr dongle TO a smartphone.

[@justanengineer5599]

I have updated the "subject" field accordingly

[@louisebrugman5209]

SMA not RCA

[@justanengineer5599]

I thought I had already put that in description :-)

[@brgarrison418]

I'm glad someone else said this.... Lol I was screaming saying it's an f**king SMA

[@najlahack7294]

Can i copy it and hack garag

[@justanengineer5599]

Using this application you can record the signal with no problem because it is a RF receiver. But to play it on the air you need a HACK RF tool which is RF transmitter. The RTL-SDR dongle is not a transceiver, it is only to receive signals.

[@najlahack7294]

@@justanengineer5599 and key car kan i record it + give me divice can record and replay if you have

[@justanengineer5599]

Search for HACK RF tool. Like here kzbin.info/www/bejne/gpuQqpmlbJaXl7c

[@saeedtarashioon7735]

You really bore us by being so slow

[@justanengineer5599]

There is FFD option in YT, you may use it :-)

[@charlienyikos1564]

Beszélhetél volna lengyelül is 🇭🇺

[@justanengineer5599]

I always include edited polish captions under my videos.