The RTL-SDR Blog V4, which uses the RTL2832U ADC and R828D tuner, has the following sampling rate characteristics according to its datasheet: In practice, most users find that setting a…
https://wiki.gnuradio.org/index.php/Tutorials
They sound similar, but they serve different purposes in the signal chain: LNA (Low-Noise Amplifier) LNB (Low-Noise Block Downconverter) ✅ In short:
Short answer: at 1420 MHz you’re probably running out of front-end signal, not software. FM at ~100 MHz is insanely strong so it “looks fine,” but your L-band setup needs…
Reproduced from Wikipedia 9/9/2025. Fast Fourier transform A fast Fourier transform (FFT) is an algorithm that computes the discrete Fourier transform (DFT) of a sequence, or its inverse (IDFT). A…
From Ted Cline 9/9/2025: The spike at frequency zero is just a consequence of the fact that your signal does not have an average of zero. The value at “frequency…
Here’s a compact, practical comparison of the popular low-to-mid cost SDRs you named (RTL-SDR v3/v4, ADALM-PLUTO, Ettus B210, LimeSDR family) plus a few other often-used SDRs (HackRF, Airspy, SDRplay) produced…
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