Hi Dominic, You have been clear. So, to summarise, I have to analyze the signal with the maximum sample rate (20MHz), to include the right value in the graphic and then with the buttons "db/Div" and "Ref level" I must zoom on what I'm interested in. Do you know a block that functions in this way? Give me a feedback. Thanks a lot
Matteo 2018-04-24 17:37 GMT+02:00 Dominic Spill <[email protected]>: > Hi Matteo, > > I think I understand what you're looking for. You want to transmit a > signal, e.g. keyfob, and have the HackRF automatically show you the > frequency that it's transmitting on. > > You could use HackRF in a spectrum analyzer mode, such as hackrf_sweep, to > see where the transmission is and then manually zoom in to it, but having > the software do that automatically is more complicated because there's no > way to know which signal you are hoping to focus on. > > Does that answer your question? > > Dominic > > On 24 April 2018 at 03:03, Matteo Terzi <[email protected]> wrote: > >> Hi Dominic, >> What I'm trying to do is: >> - I want to acquire a signal from a general device ( garage door opener >> remote control, rf car's key etc). So I don't know the real value of the >> signal (2Hz or 40GHz). Is the hackrf able to set itself on the right value >> of frequency and let me know the result by means of a graphic. I wanna use >> it as a sniffer/reader of frequencies. >> >> Thanks for the support >> Matteo >> >> >> 2018-04-24 0:20 GMT+02:00 Dominic Spill <[email protected]>: >> >>> Hi Matteo, >>> >>> I'm not sure I understand the question. What are you trying to >>> achieve? Is there a known signal and you want to automatically find it? >>> Something like GSM and you want to know which frequency the local towers >>> are using? >>> >>> Or is it something else? >>> >>> Thanks, >>> Dominic >>> >>> On 17 April 2018 at 08:03, Matteo Terzi <[email protected]> >>> wrote: >>> >>>> Hi all, >>>> I'd like to know if there is a way to create a program, with GNU Radio >>>> Companion, which can acquire an unknown signal and display it on a FFT >>>> Sink, which should auto-calibrate on the right value of the signal. >>>> To explain better: >>>> I want to acquire a signal, but I don't know its value (Hz); so I need >>>> a FFT Sink that can do an auto-calibration, according to the value of the >>>> signal, to show me what the hackrf is acquiring, without having the issue >>>> to set the sample rate of the FFT Sink to an huge value to cover all the >>>> frequencies (difficult to visualize). >>>> Thanks for the support >>>> >>>> Matteo >>>> -- >>>> Matteo TERZI >>>> Google Gmail Member >>>> >>>> _______________________________________________ >>>> HackRF-dev mailing list >>>> [email protected] >>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >>>> >>>> >>> >> >> >> -- >> Matteo TERZI >> Google Gmail Member >> > > -- Matteo TERZI Google Gmail Member
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