Re: r820t2 based receiver raw samples ?

Hi Jean-Michel, On 28.10.2016 08:07, Jean-Michel FRIEDT wrote:

(150 mV amplitude, 100 kHz) but still no baseband signal, and on the FFT of the osmosdr output I still see the spectrum of the FM band when tuning to 100 MHz rather than the samples from the (initially unconnected) Q input.

The problem is that by enabling the direct sampling mode, the RTL2832 is forced to low-IF mode and only one ADC is enabled. For your purpose, the device needs to be in zero-IF mode, which normally wouldn't be used if a low-IF tuner like the R820T is attached. Please see the attached patch, if you call rtlsdr_set_direct_sampling with 1 after applying it should work. Regards, Steve