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RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector

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  • #1232 16972074
    Piter K.
    Level 23  
    This is a typical RTL SDR receiver with only minor improvements. Just plug it into the USB port and run ZADIG. If you don't have Zadig, google it :) During installation it is supposed to be "bulk" and it will go, at least it should.
  • #1233 16972130
    tdrk14
    Level 9  
    I already tried zadig 2.3, the line "Bulk-In, Interface (interface 0)" does not appear in the selection, of course I checked everything properly.
  • #1234 16972579
    Piter K.
    Level 23  
    Well, you have a problem ... To eliminate the thesis that the receiver is damaged, try to run it on another computer. Ideally, it should have a system other than Windows 10. You can also use the Kali Linux CD. In Kali, RTL SDR is installed as standard. You connect the equipment and start from the record. I don't remember exactly, there seems to be an additional menu for RTL SDR.
  • #1235 16972739
    tdrk14
    Level 9  
    I already tried on another computer, on an Android 7 phone and to no avail, I called the seller and he promised to replace it, tomorrow, a new copy will come.
  • #1236 16973227
    Piter K.
    Level 23  
    Replacing it with a TESTED and working receiver would be the best solution. Although the v3 manufacturing company says each unit is inspected before being released for sale ...
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  • #1237 16975141
    tdrk14
    Level 9  
    As promised by the seller, this morning a courier woke me up and gave me a new "dynks", I put it in the USB computer and everything started on the already uploaded rudders from the black model, now I play with it and hear the differences (plus).
  • #1238 16975255
    Piter K.
    Level 23  
    Now replace the file in SDR Sharp with the one I uploaded and try to go down to, say, 7MHz. And ... you probably do not have a short wave antenna ... I will write right away that in urban conditions, which to a large extent impose restrictions on HF users, magnetic antennas work very well. All you need is a bicycle rim, you need to cut it in one place, you will need a variable capacitor, a bit of a concentrator and a plug ... Especially as portable for out-of-town trips. If you are not interested in short waves, a discone or a biconical dipole will suffice. Dipole can be easily done. All you need is a good soldering iron and a little power cable. RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector
  • #1239 16975662
    tdrk14
    Level 9  
    Where did you put this file for replacement? I use the SIRIO SD-1300U antenna, the broadband antenna for the 25-1300MHz scanner, I have it on the roof. May be?
  • #1240 16976446
    BOOM i ZONK
    Level 21  
    From simple, typically one-band antennas, I can recommend "Vertical Double Bazooka". I made 3 versions of this antenna, each from a different coaxial cable: RG58, K-15 (old Polish military 50Ohm cable) and RG6 - probably the cheapest 75 Ohm aluminum bought at Dipol 'at. I believe that the RG6 version is the most effective. It is a DC short-circuited antenna so it will pick up less static. Currently, in my opinion; it completely outclassed the simple dipole. I made it based on the calculations of the VE3SQB program (attached).
  • #1241 16976614
    Piter K.
    Level 23  
    The file is in this thread on page 41. Your antenna is a discone and it is only suitable for receiving VHF-UHF. You can try on 14MHz and of course on 21, but don't expect any spectacular successes, which doesn't change the fact that they can be. Unlike my friend, however, I will recommend a magnetic antenna. This is for a number of reasons. The magnetic antenna is quite small, it is resistant to interference, because it works on a magnetic constant and the interference is usually on an electric constant, it perceives extremely narrowly and acts as an additional input filter. Of course, it is tuned with a variable capacitor. And most importantly, it doesn't have to be on the roof! The one from the bicycle rim receives from 28MHz to about 5.5MHz - after switching on an additional capacitor. Why a bicycle rim? Because the antenna was supposed to be used for business trips. It was supposed to be exposed to damage. The rim is relatively small but very stiff and will not crease.
    https://www.youtube.com/watch?v=V7wTd_juccQ
    I also made an antenna with a circumference of 3m. With the 480p capacitor, I went down to 7MHz, but if you add the condenser in parallel, you could go down to 3.5MHz. Of course, the efficiency of this antenna at lower frequencies is lower than that of a half-wave dipole, but ... A half-wave dipole at 80m is obviously 40m of wire in the field, which must be hung at the appropriate height. Magnetic antenna, it can be close to the ground and it does not matter, it is important that it is away from steel objects. Here in the movie my AOR with a full set of knobs :D
    https://www.youtube.com/watch?v=dQqxac8kQ8M
    In this video I present the work of a cooled tuner and the work of a modded driver with an LW antenna - about 15m UTP twisted pair hung about 10-15n above the ground. As you can see, you can go down to 3.5MHz without anything, but the receiver works better to about 4MHz, it continues to fly like momentum and below 3MHz it receives virtually nothing. Pieciagoras is of course my channel that shows my equipment and my listening in on it.
    https://www.youtube.com/watch?v=Qfswc8MrlLA&t=38s
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  • #1243 16986358
    Piter K.
    Level 23  
    Now explain what pluing is. I've been walking around this vale of tears for a few years now and have never heard of anything like pluing into a program in my life. It's something to spit to my taste. There is no plucking in the link, there is a frequency search plugin. "?????" is "searching" in Russian. I advise you to use the google translator. I would like to add that I have not seen pluing yet, sorry, a plug-in for SDRSharp that extends the program with a scanning option. But it's worth looking for, maybe even pluing will be found, not just a plugin.
  • #1244 16987087
    don_viking
    Level 21  
    Hello. For those interested in receiving TETRA, I recommend reading the article from the link below. I would like to add that the plugin works very well, only a strong signal must be received for the modulation to be properly decoded.

    https://www.rtl-sdr.com/tetra-decoder-plugin-for-sdr-now-available/

    As for the plugin " nobody "It's a dozen or so posts earlier, I posted links to sites with plugins and the version of SDRSharp already with the plugin installed, which you are probably interested in. Below is a link to the post. Just search this topic carefully and all the necessary information will be found.

    https://www.elektroda.pl/rtvforum/topic2353101-1170.html#16676578
  • #1245 16987179
    Piter K.
    Level 23  
    Of course, with TETRA it is like with MOTOTRBO in DSD. If there is no transmission with the keys, you can listen, and if there are any, you can forget about listening. So, for example, the police are out.
  • #1246 16987241
    niktto
    Level 10  
    Piter K. wrote:
    Now explain what pluing is. I've been walking around this vale of tears for a few years now and have never heard of anything like pluing into a program in my life. It's something to spit to my taste. There is no plucking in the link, there is a frequency search plugin. "?????" is "searching" in Russian. I advise you to use the google translator. I would like to add that I have not seen pluing yet, sorry, a plug-in for SDRSharp that extends the program with a scanning option. But it's worth looking for, maybe even pluing will be found, not just a plugin.


    You know perfectly well what I meant with the Czech mistake, but as I see here everyone is picking on nonsense instead of substantively.
    wanted to be appreciated? How old are you? I 52 and you want to show off here? or maybe you collect points and exchange for crayons.
    Moderated By c2h5oh:

    This is the first and last admonition. If you have any comments on other users' posts, please report it to the moderator. There will be a warning next time.



    As for the link "don_viking", I clearly wrote that I meant the "plug" scanning for SDRSharper and not SDRSharp
    and that's a big difference.
    Have a nice day.
  • #1247 16987414
    don_viking
    Level 21  
    I know that you mean that version of the program, but there were probably no plugins of this type for version 13 of SDRsharp because SDRSharper only accepts these, although not all of them. I tested myself. The newest SDRSharper is the 0.6L version and so far there is no newer one and it comes with basic plugins.
    Look for plugins here, maybe one will come to you.
    http://hirn.hol.es/download/index.php?dir=FunK/
  • #1248 16987427
    Piter K.
    Level 23  
    My age doesn't matter. You walk the crap yourself, and this time also the OT. They are very chasing after spelling on the format. Of course, they do not move in Polish, English yet. There is one serious thing you should think about. What do you expect from people when constructing a question like sloppy, when you have to guess what you wrote and then roll up your sleeves and do the job for you. Think about it seriously if you ask someone for help, because through "innocent mistakes" you may again blame that you have been misunderstood this time.
  • #1249 16987941
    niktto
    Level 10  
    Piter K. wrote:
    My age doesn't matter. You walk the crap yourself, and this time also the OT. They are very chasing after spelling on the format. Of course, they do not move in Polish, English yet. There is one serious thing you should think about. What do you expect from people when constructing a question like sloppy, when you have to guess what you wrote and then roll up your sleeves and do the job for you. Think about it seriously if you ask someone for help, because through "innocent mistakes" you may again blame that you have been misunderstood this time.


    Moderator tell this pyskaczowi that no help is provided here because it is not an emergency room, but information and views on given topics are exchanged. Let him write his arguments to a friend, because the forum is cluttered. Let him take an example from the colleague who wrote back on the subject.
    (walking, formum) what is it? possible formum romanum start with yourself and then get someone's attention
    "don_viking" thanks for the info
    ps. From what I've heard, SDRSharper is not made public or plug-ins due to the fact that someone was working on these plugins without the author's consent and sharing them as theirs. There is only a commercial version.
    I have android versions of SDR Touch free of charge.
    Have a nice day.
    Moderated By c2h5oh:

    I admonished and warned. I explained how to solve the case. Without result.
    I give my colleague a 14-day leave from writing. Please cool down during this time and read the regulations.

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  • #1250 16987996
    tdrk14
    Level 9  
    Instead of arguing, I have a request if someone can upload the SDRSharp ready with the TETRY plugin, I can't download it for the hell, I would like to test it. Thanks in advance for the trouble.
  • #1251 16988129
    don_viking
    Level 21  
    tdrk14 wrote:
    Instead of arguing, I have a request if someone can upload the SDRSharp ready with the TETRY plugin, I can't download it for the hell, I would like to test it. Thanks in advance for the trouble.


    The latest version with the plugin is attached, but you need to set the ppm. And before starting the demodulator, start the "startrx" service in "msys2_shell.cmd".
  • #1252 16988507
    tdrk14
    Level 9  
    For me it's black magic, "you just have to set your ppm" what is this? Then I run "MSYS2 MinGW 32-bit" and enter the password "startrx" on the black field, I do enter and the message "bash: startrx: command not found" I need to explain it vaguely.
  • #1253 16988994
    BOOM i ZONK
    Level 21  
    And you copied the entire contents of the "msys_root" folder to MSYS (/ usr / bin)? After copying "pacman -S socat" in MSYS console. Only then "startrx" and finally run SDR # with the plugin installed.
  • #1254 16992161
    tygrysss
    Level 21  
    don_viking - I have a question, could you please tell me what is this signal - is it a tetra?
    If so, am I able to decode it? I downloaded your sdrsharp Tetra file which you uploaded on January 25th.

    I don't know how to use it, could I ask for an explanation. I set the frequency, select the demodulator in the tetra demodulator plug, the speakers mute and that's it.
    Does it need more than the program you put in?

    Thank you and best regards.
  • #1255 16992221
    internick
    Level 36  
    Show what you have in the black Msys window. Especially the encrypt item. Civil tetra is around 425 MHz. Only here it will be without a key. MSW is in the 380 ÷ 393 MHz range.

    This signal is DMR, not Tetra. And recorded contrary to the raster. It should be 172.3625.
  • #1256 16992422
    tygrysss
    Level 21  
    Thank you for your response!
    Due to the fact that it is DMR - I am decoding DMR because from what I can see it should go without any problems. Maybe there will be something interesting on this frequency. So I am looking for a guide and I will try.
    I will ask - who encodes the tetra? Service?
  • #1257 16992521
    internick
    Level 36  
    Not only the police, but also the energy sector, e.g. in the Pomeranian Voivodeship.

    DMR is decoded in DSD: https://www.dsdplus.com/download-2/

    I propose to start setting up on an amateur converter from converters.net because these are unencrypted.
  • #1258 16992581
    tygrysss
    Level 21  
    Hmm, I just have a blue frequency. I configured the program, installed all the components. All the time I have:

    slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle
    + DMR slot1 BS DATA DCC = 2 Idle
    + DMR slot2 BS DATA DCC = 2 Idle


    of course when broadcasting on band. Here just blue or something else (I can see on the band) Can it be encrypted? Or maybe not much is happening today ;)
    I found a total of 3 "flying" frequencies.
    I've just lined up for a repeater from my town - silence so far.
    I understand that DSDPlus (properly configured, of course) should decode the sound and play it on the speakers (output which I chose), and in the window instead of the date, voice will appear?

    Thank you and best regards.
  • #1259 16992692
    internick
    Level 36  
    Most likely what you have is 99% only the frame, which, sent by the repeater, allows, for example, radio telephones to log into the stronger one.

    Fun to decode it, incl. the tedious input level settings also start with the amateur band, because that's where you will know if you are receiving the correct modulation.

    In the Event window you will see the group they are talking on, the ID of the radios, and a sound will come from the speakers.

    http://www.sp-dmr.pl/aktualnie-podlaczone-przemienniki-i-hotspoty-dmr-w-sp/
  • #1260 16994080
    don_viking
    Level 21  
    Hello . I have a question if anyone has ever encountered a similar problem as described below. Recently, I have had small disturbances, but I do not know from what device. They are not constant, but it looks like someone turns something on and has been using it for some time. I would like to add that I live in a block of flats and I have a 6x1 / 2 wave antenna on the balcony. Recently, I changed its structure and replaced the cable braid with a copper tube, which improved its performance. It seems to me that it may be interference from some TV or internet from the phone but I'm not sure that's why I asked. In the first two photos the signal is undisturbed, the next ones show no disturbances.
    RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector
    RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector

    I have an additional question, has anyone tried to decode DMR via dsd + using VAC or TETRE on VISTA?

Topic summary

The discussion revolves around the use of RTL-SDR (Software Defined Radio) receivers, specifically utilizing inexpensive DVB-T tuners like the RTL2832U and R820T models. Users share experiences regarding the capabilities of these tuners to receive a wide range of frequencies, including AM, FM, and shortwave bands. Concerns about potential damage to the tuners when connecting antennas directly to the RTL2832 chip are raised, along with suggestions for protective measures such as using diodes. Various software options for SDR, including SDR# and HDSDR, are discussed, along with installation issues and driver compatibility. Users also explore antenna options, modifications for improved reception, and the effectiveness of different setups for receiving signals across various bands.
Summary generated by the language model.
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