[Hackrf-dev] Auto-calibration in receiving mode

[Matteo Terzi]

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 <dominicgs at gmail.com>:

> 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 <matteo.terzi97 at gmail.com> 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 <dominicgs at gmail.com>:
>>
>>> 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 <matteo.terzi97 at gmail.com>
>>> 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
>>>> HackRF-dev at greatscottgadgets.com
>>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>>>
>>>>
>>>
>>
>>
>> --
>> Matteo TERZI
>> Google Gmail Member
>>
>
>


-- 
Matteo TERZI
Google Gmail Member
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