Re: [Hackrf-dev] Fwd: Low pass filter lesson 1

2018-05-09 Thread Dominic Spill
On 9 May 2018 at 01:29, Matteo Terzi wrote: > > Hi Chuck, > could you explain me better? > Sorry but I don't understand why I should mix the signal. I'm a newcomer with GNU Radio. > If you can, give me a website where I can find something more. Some of these concepts

Re: [Hackrf-dev] Low pass filter lesson 1

2018-05-09 Thread Matteo Terzi
Hi Anon, thanks for this explanation. Just a thing: so if I understand well, my "new" 0 is 97.5mhz. Why if I'm filtering at 75khz (cutoff freq) and so 97.5mhz+75khz, I can see the other higher/lower frequencies on the fft sink? a filter should brutally cut the frequencies after the "cutoff freq"

[Hackrf-dev] Fwd: Low pass filter lesson 1

2018-05-09 Thread Matteo Terzi
-- Forwarded message -- From: Matteo Terzi Date: 2018-05-09 9:28 GMT+02:00 Subject: Re: [Hackrf-dev] Low pass filter lesson 1 To: Chuck McManis Hi Chuck, could you explain me better? Sorry but I don't understand why I should