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RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more.
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      • 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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Monthly Archives: December, 2025

  • DSDPlus Public Release Updated & Fast Lane Changes December 9, 2025
  • rtl_haos: An rtl_433 to Home Assistant Bridge December 2, 2025
  • Frugal Radio: Using a 25 Dollar PC for Decoding with SDRs December 1, 2025
    • Newer posts
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Recent Posts

  • LakeShark Update: Using an LR2021 LoRa Chip as an SDR for Portable P25, POCSAG and FM Reception on the ESP32-P4
  • Demod Updates: Adds Support for OpenWebRX, FT8 Decoding, CarPlay and an Android Version
  • FoxSDR Adds Airports & Navaids Plugin
  • OnAir Adds Decoder Support for Almost Every Signal
  • SDR– Updated to V2.2: Many New Decoders, Tools and KrakenSDR Direction Finding and Beamforming Support Added

Recent Comments

  • aubry.jll on Turning a Wi-Fi 7 Router into a 320 Msps SDR: “Indeed, I couldn’t find a single retailer in the EU—only one second-hand unit available in Poland.” Oct 16, 07:05
  • Ads_will on OnAir Adds Decoder Support for Almost Every Signal: “I thought it would be a funny joke but some people just told me to me 999ghz the max so…” Oct 16, 03:14
  • Ads_will on OnAir Adds Decoder Support for Almost Every Signal: “Also funnily enough, at first I made the dcb-t2 decoder for myself on Mac, I shared it with some people…” Oct 16, 03:13
  • Orlando on OnAir Adds Decoder Support for Almost Every Signal: “I’m sure you do. Making a Good App that people are really liking and publishing it. The community is going…” Oct 15, 23:53
  • Matt on OnAir Adds Decoder Support for Almost Every Signal: “Thank you. Love the work you’re putting in.” Oct 15, 19:48
  • Ric L on OnAir Adds Decoder Support for Almost Every Signal: “Maybe fix the frequency entry / display? I really don’t think having the entry wide enough for exahertz is really…” Oct 15, 19:18
  • Ads_will on OnAir Adds Decoder Support for Almost Every Signal: “Also just so everyone knows, my intentions are to close the gap that exists in radio that you need a…” Oct 15, 17:36

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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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