New answers tagged rtl-sdr
1
I repeat my comment now as answer. With a small addition.
Depending on the settings in the RTL control program there is a first conversion to zero-IF or near-zero, or low IF, offset from zero. The front-end mixer for the range 24 MHz and higher is a mixer with a variable LO that converts the FM broadcast frequency to that lower IF frequency. The LO contains ...
2
The real number of samples from an RTL-SDR is not available via the USB interface. The RTL2832U chip samples at 28.8 Msps, but then mixes and downsamples the internal samples to lower rate IQ samples at from 240k to about 3 Msps, to allow transport over its slower USB 2.0 bus. The front-end R820T tuner can first downconvert VHF and UHF signal to a low HF ...
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