Search found 2 matches

by MrMarian
Sat Mar 02, 2019 9:03 pm
Forum: User Projects
Topic: IQ to frequency spectrum with FFT - half of bandwidth?
Replies: 2
Views: 1121

Re: IQ to frequency spectrum with FFT - half of bandwidth?

Thank you hotpow2! I finally got a full spectrum with you advices! In my first post i wrote the totally untruth. As you say: i need fftshift to properly reorder FFT result array, here is visualisation for your words: Figure 5 : https://www.gaussianwaves.com/2015/11/interpreting-fft-results-complex-d...
by MrMarian
Sat Mar 02, 2019 12:03 pm
Forum: User Projects
Topic: IQ to frequency spectrum with FFT - half of bandwidth?
Replies: 2
Views: 1121

IQ to frequency spectrum with FFT - half of bandwidth?

Hi friends. Recently I was discovered an RTL-SDR dongle. This is awesome device! Now i'm trying to write my own software which gets IQ signal from dongle, and present it as frequency spectrum. I can't resolve one thing. Im setting frequency by calling rtlsdr_set_center_freq to eg. 100000000Hz (100MH...