Modified RTL-SDR Source for SDR++ with Manual Controls for R820T/2/R828D Tuners and Harmonic Reception

Over on GitHub user Sultan-papagani has just released a modified RTL-SDR source for SDR++ that enables full manual control of the gain stages, filters and other features on R820T/2/R828D tuner based RTL-SDRs. This includes the Blog V3 and Blog V4. In the standard drivers many of these these features are automatically controlled.

Tweaking the individual LNA, Mixer and VGA gain stages manually can help you to maximize SNR, while adjusting the filters can help block out of band interference.

The modified source also enables the 'Hamonic reception' enhancement from the librtlsdr fork of rtl-sdr, which allows you to tune up to 6 GHz via harmonic mixing. Note that tuning above the standard maximum of 1.766 GHz will most likely require strong band pass filtering and an external LNA as the harmonic mode results in a lot of imaging and weak signals. 

A new RTL-SDR Source for SDR++ with Manual Gain/Filter and Harmonic Mixing Controls
A new RTL-SDR Source for SDR++ with Manual Gain/Filter and Harmonic Mixing Controls
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Related posts:

  1. New R820T Driver with LNA/Mixer/VGA Gain Settings
  2. New Linux RTL-SDR Driver with Fully Exposed Controls
  3. More Comparisons Between the E4000, R820T, FC0013 and Linrad and SDRSharp
  4. Comparisons between the R820T and R820T2 RTL-SDR Tuners
  5. Demo of a New R820T Driver with extra Gain, Decimation and IF Filter Adjustments
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edyasia
#253400

anyone has compiled it?

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Name
#253435

I haven’t compiled it, but I suppose you could insert the source code provided on the GitHub link into the source tree and compile it. I’ll look at it later…

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#253368

I can now do Wi-Fi reception with my Blog V3? YES!

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