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Questions tagged [rtl-sdr]

Use this tag for `rtl_power`, `rtl_adsb`, `rtl_fm`, `rtl_eeprom`, `rtl_tcp`, `rtl_sdr`, and `rtl_test`. Software for using DVB-T USB receivers based on RTL2132 as inexpensive SDR receivers. Part of the Osmocom project.

FROM the description at the rtl-sdr project page:

Software for using DVB-T USB receivers based on RTL2132 as inexpensive SDR receivers.

Part of the Osmocom project. Generates the executables:

  • rtl_power
  • rtl_adsb
  • rtl_fm
  • rtl_eeprom
  • rtl_tcp
  • rtl_sdr
  • rtl_test
51 questions
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How to get the returned value from asyncio loop?

I'm trying to measure the power level of the signal captured by rtl sdr dongle and then compare several measurements to get the best level of power, but I don't know exactly how to return instantly the power level to my main function. Here is my…
Mohammed Ayoub Toubal
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Find a algorithm to identify a plateau

I've got the following set of data : As you can see, I've got two plateau at 1987 and 3757. The problem is I can't find a good algorithm in order to extract them. I've already tried this algo, without any success. Any help will be welcomed. Regards
Khan From Chedum
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CRC16-CCITT for shipborne AIS

I am trying to decode an AIS transmission and validate it by checking CRC code. However, I am not sure of the sequence of steps, nor the expected result. My question is, can anyone tell me the correct sequence of steps to use CRC to validate an AIS…
stanged
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Trouble piping to curl through sed

I have a program, rtl_433, that outputs lines of JSON - maybe once or twice a minute, while it's running. I need to pipe that data as HTTP POST data to curl. What complicates matters is that this string needs to be encapsulated in single quotes,…
OZ1SEJ
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is it possible to use android cellphones Telecommunication hardware to transmit and receive radio messages?

Is there a way to turn android phone 4G hardware to a module that can transmit any radio messages or make p2p connection with another phone?
Ali Shaterian
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SOX exiting unusually, as if the user is canceling

I am trying to read a FM signal and piping it to sox. This is exiting unusually. Any idea what's going on? Thanks. $ rtl_fm -f $137M -s 60k -g 45 -p 55 -E wav -E deemp -F 9 - | sox -t wav - abc.wav rate 11025 Found 1 device(s): 0: Realtek,…
SEU
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gnuradio: How to change the bandwidth of a source?

I have designed a receiver+FSK demodulator with an osmocom source and it works as it should (sometimes - as I'm finding the results to be somewhat incoherent, but I suspect that might be the transmitter that is at fault). Anyway sometimes the…
SomeEngineer100
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ubuntu - GNU-RADIO - cmake could not find MPIR

I'm trying to get a RTL-SDR source block (or osmo sdr, since they both work) in GNU Radio, and it apparently must be obtained via the following command lines: git clone git://git.osmocom.org/gr-osmosdr cd gr-osmosdr/ mkdir build cd build/ cmake…
Hugo Pontes
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Using RTL and USRP for DSB modulation/demodulation

to understand GNURadio and the SRD world step by step, I tried to realize a first flowgraph to simulate a DSB modulator/demodulator. The signal is an audio file rec by the audio sink block at 32000 Sa/s. The USRP (N210) is the transmitter and the…
Wincio
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PlutoSDR AttributeError: module 'iio' on Ubuntu 20.04

When attempting to run flow graph in GNU Radio Companion, I get the following error: AttributeError: module 'iio' has no attribute 'pluto_source' I am running a new VMWare environment, on Windows, for Ubuntu 20.04. I first installed the drivers and…
James Hayek
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syncronization of multiple raspbery pi sensors

i have a little project i am working on in which i need to measure the time difference between several raspberry pi modules in the matter of nano seconds. my question is what timing mechanism can provide me this type of difference measurement…
Maor Agai
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Python: IMPORT ADI in Intellij

I bought a PlutoSDR and I am running Windows 10. I do not know how to import adi into my IDE in Windows. (Linux VM works) Non-essential background. Can Skip to Bottom: I upgraded my firmware on the Pluto I installed the…
James Hayek
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Qt cannot find library

I'm currently trying to make a simple app for Android using Qt. The app should comunicate with a rtlsdr dongle using the librtlsdr. I managed to compile this library for android obtaining the .so file. But i got an error when i try to compile the…
Pedro Rosito
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2 answers

Cannot get the 'FM_receiver' sample gnuradio code to work

I am trying to get the sample code for the 'FM_receiver' sample code working with my limeSDR and it seems not to pickup anything. Here's some screenshots of my gnuradio and its output: I have it tuned to 98.5MHz which I can hear clearly with a…
SomethingsGottaGive
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start and stop a linux shell command from a c program without blocking current execution

while(variable > 0){ updatevariable(); //variable gets updated from UDP serevr. // i want to execute a shell command here without blocking current execution. } i tried using system() function but it is blocking current execution, i should be…
Vijay Madipally
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