On 02/23/2017 03:32 PM, Marc Pàmies Massip wrote: > Hi Cinaed, > > Thanks for your answer. > > Do you mean that depending of what kind of signals you want to detect it > might be worth to use sample rates below the minimum recommended? For > example, to look for GSM channels (BW=200kHz) I should use a lower rate? > > When I first asked the question I said that the lower limit is 8MHz > because I read it somewhere a long time ago, but after sending the > message I was looking at the specs again and I saw that the minimum > supported sample rate is 2MHz > (here: https://github.com/mossmann/hackrf/wiki/HackRF-One). Which one is > the real minimum? > > Marc. >> >> On 23/02/2017 20:41:40, Cinaed Simson <cinaed.sim...@gmail.com> wrote: >> >> On 02/23/2017 11:05 AM, Marc Pàmies Massip wrote: >> > Hello, >> > >> > I wanted to ask if it is feasible to use a HackRF with a Raspberry >> Pi.
Depends upon the task. For what I want to do, the answer is no. It's to slow. >> > I have seen that some people use both hardware together, but it sounds >> > strange to me considering that the minimum sample rate recommended for >> > the HackRF is 8 MHz. Then you should be talking to these people and trying to figure out what they're doing and how they're doing it. The recommended sampling rate is roughly 3-4 time the Nyquist frequency of the problem at hand. >>A Raspberry Pi can support such a high sample >> rate? No. And neither will the pi3. >> > Are there any other drawbacks to consider if this combination was to be >> > done? Other than having a slow CPU and USB and too little memory to do anything except an extremely simple problem, no. >> > >> > Thank you in advance. >> >> The sampling rate depends upon the problem. >> >> For instance, using a 8 MHz sampling rate to listen 16 kHz signal is >> overkill. >> >> No, the pi can't support high sampling rates. >> >> Even the Raspberry pi3 is to slow to run an SDR and the HackRF and do >> anything useful - except possible capture signals directly with the >> HackRF. >> >> And even then writing to microSD card may limit the sampling rate. >> >> Try an Odroid-XU4. >> >> > >> > >> > _______________________________________________ >> > HackRF-dev mailing list >> > HackRF-dev@greatscottgadgets.com >> > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >> > >> >> _______________________________________________ >> HackRF-dev mailing list >> HackRF-dev@greatscottgadgets.com >> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev _______________________________________________ HackRF-dev mailing list HackRF-dev@greatscottgadgets.com https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
