flowgraph.I just started to struggle with GNU radio with using adalm-pluto. I aim to record the 2MHz interval in FM broadcast. I tried to below flow which try to record the fm broadcast. But when i converted the output of the file sink to wav file with SoX and opened in SDR#, it just shows the -19kHz and +19kHz on selected frequency(like 87.5MHz,88,4 MHz, etc…). I want to record at 2MHz interval. I mean if beginning of the frequency is 87.5 MHz, I want to record whole radios between 87.5 MHz and 89.5 MHz. Is that possible in GNU radio? Thanks for help.
You have to connect File Sink block immediately after PlutoSDR. If you choose LO 100 MHz and sample rate 2 Mhz, it will translate RF spectrum 99-101 MHz to baseband.