rtl-sdr.com
RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more.
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        • ACARS Decoding
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        • Decoding Weather Balloons
      • Satellite
        • NOAA Weather Satellites
        • Meteor-M Weather Satellites
        • GOES 16/17 and GK-2A Weather Satellite Tutorial
        • Inmarsat STD-C NCS EGC Decoding
        • Decoding and Plotting GPS
        • Decoding HRPT Weather Satellite Images
      • Terrestrial
        • P25 P1 Digital Voice Decoding
        • P25 P2 Decoding with OP25
        • Trunked Radio Following
        • POCSAG Pager Decoding
        • TETRA Voice Decoding
        • Analyzing GSM Signals
        • DRM Radio Decoding
        • Decoding 433 MHz ISM Band Weather Stations
      • Single Board Computer
        • QRP (FT8, JT9, WSPR etc) Monitoring Station
        • Performing Replay Attacks with RTL-SDR and RpiTX
      • Radio Astronomy
        • Radio Astronomy Overview
        • Hydrogen Line Galactic Radio Astronomy
      • Other
        • Measuring Filter Characteristics & VSWR
        • SpyServer Tutorial
        • Using the V3 Bias Tee on PiAware
        • Properly Positioning a Preamp/LNA
    • Product Reviews
      • SDRs
        • Airspy HF+ Review
        • Airspy vs. SDRplay vs. HackRF
        • SDRplay RSP1A
        • SDRplay RSP2
        • FlightAware ADS-B RTL-SDR
        • Outernet Dreamcatcher
        • LimeSDR Review
        • LimeSDR Mini
        • ThumbNet N3
        • Airspy Mini
        • PlutoSDR Unboxing
        • PlutoSDR Tests
        • KiwiSDR Review
        • FlightAware Prostick vs Prostick Plus
        • HackRF PortaPack Review
      • SpyVerter Upconverter
      • 9A4QV Folded Monopole ADS-B Antenna
      • FlightAware ADS-B Antenna and Filter
      • Outernet LNA and Patch Antenna
      • moRFeus Review
    • Interesting
      • TEMPEST with SDR
      • Listening to HD Radio
      • Receiving Dead Satellites
      • Listening to SCA Broadcasts
      • Live ADS-B Aircraft Cockpit
      • Transmitting with a Raspberry Pi
    • Quick Start Guides
      • RTL-SDR QSG
      • V3 Features Users Guide
      • SDRSharp Users Guide
      • PlutoSDR QSG
    • Direct Sampling Mod
    • Roundup of Software Defined Radios
    • KerberosSDR
      • KerberosSDR Quickstart Guide
      • Direction Finding Android Demo
      • Direction Finding Android Tutorial
      • SignalsEverywhere Direction Finding Tutorial
      • Networked Direction Finding
      • Measuring Traffic Volumes with Passive Radar
  • Software
    • RTL-SDR Supported Software
    • List of SDRSharp Plugins
    • Experimental Drivers
      • Experimental HF Driver
      • Manual gain controls and decimation driver
      • ExtIO with Decimation & Tuner Bandwidth Controls
      • Keenerds Driver
      • L-Band Heat Issue Driver
  • Signal ID Wiki
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Posts

  • RTL-SDR Tutorial: Decoding Digital Voice (P25, DMR, NXDN, D-STAR) with DSD April 11, 2013
  • Analogue TV with RTL-SDR April 11, 2013
  • Tutorial: How to Enable Stereo Mix in Windows 7 April 11, 2013
  • RTL-SDR Tutorial: Receiving Airplane Data with ACARS April 11, 2013
  • Welcome to rtl-sdr.com April 11, 2013
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Recent Posts

  • Detecting Dark Matter’s Mark with an RTL-SDR Based DIY Radio Telescope
  • DXLens: An iOS App Combining Shortwave Schedules, Propagation Data and Public SDRs
  • RTL-SDR Blog V4L (Lite) Now Available for Purchase!
  • ESP32 Bit Pirate Updates: New LoRa and Meshtastic Analysis Features
  • Open Source Firmware for the DeepSDR 101

Recent Comments

  • G1RNB on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “Why would anyone prefer USB-C over USB-A. If you have ever worked in a PC repair shop then you would…” Aug 16, 05:48
  • admin on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “Erasyth calibrated siggen + attenuators -> RTL-SDR -> SDR# 3dB MDS measurement @ max gain, 2.4 MSPS, 64K FFT, blackman-harris…” Aug 12, 01:39
  • admin on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “The USB-C version will be coming soon, once we ramp up production.” Aug 12, 01:37
  • admin on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “No notch as there is no open_d pin on the R828S. (I noticed that notch filter was left in the…” Aug 12, 01:36
  • Kevin on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “Thanks. I thought there would be more of an upturn in MDS at HF frequencies, given my data at HF…” Aug 11, 18:45
  • Dr Matrix on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “It looks like no notch filters https://www.rtl-sdr.com/wp-content/uploads/2026/08/pcb_v4L_features-2-1.jpg” Aug 11, 16:59
  • Erlend on RTL-SDR Blog V4L (Lite) Now Available for Purchase!: “Is the notch filter gone on the V4L?” Aug 11, 16:53

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What is RTL-SDR

The RTL-SDR is an ultra cheap software defined radio based on DVB-T TV tuners with RTL2832U chips. The RTL-SDR can be used as a wide band radio scanner. It may interest ham radio enthusiasts, hardware hackers, tinkerers and anyone interested in RF.
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