Incidentally, please post the output of hackrf_info
The firmware and the libraries must match otherwise the results can be unpredictable. Also, please indicate which version of GNU radio and gqrx you're using. And note, I don't really know what you mean by a new Mac Pro - I don't know if it's old model but new to you or if it's the latest model - an Intel 2.9 GHz Core i5. So please indicate the model. -- Cinaed On 03/18/2017 11:18 AM, mohammed hamoud alkindy wrote: > Thank you all for the support, it seems I am trying things without any > improvement, changing sampling rates give me strange error messages no > matter what rate I put: > > > > Failed to set RX input rate to 8e+07 > > Your device may not be working properly. > > The same with other lower rates > > > > Regards > > > > > > *From: *Chuck McManis <chuck.mcma...@gmail.com> > *Date: *Tuesday, March 14, 2017 at 10:13 PM > *To: *Mohammed AlKindy <moham...@omantel.net.om> > *Cc: *Simon Kennedy <si...@thekennedys.info>, hackrf-dev > <hackrf-dev@greatscottgadgets.com> > *Subject: *Re: [Hackrf-dev] not so good experience for my first SDR > > > > Reading this it sounds like there is a misunderstanding here. > > > > If you have sampling issues you will get an *underrun* not an *overrun*. > > > > If you are getting an *overrun* between the HackRF and your audio card > then you need to put a sample decimeter between them. You can slow the > 'output' samples from a decimeter block arbirarily down. In other words > you could sample the HackRF at 20Mhz and decimate it by 200,000 and the > output would be 1,000 samples per second (very slow). > > > > If you are getting OVERRUNs add more decimation > > if you are getting UNDERRUNs then increase the sample rate. > > > > --Chuck > > > > > > On Tue, Mar 14, 2017 at 11:03 AM, mohammed hamoud alkindy > <moham...@omantel.net.om <mailto:moham...@omantel.net.om>> wrote: > > Actually the lowest rate seating I could set is 8000000 but still > getting the over run I will try to check how to change the audio > setting to 44.1khz as it show me now it is at 45khz as my card is > now set to 44.1khz but I do not know how to change it on my mac yet > > > > *From: *HackRF-dev <hackrf-dev-boun...@greatscottgadgets.com > <mailto:hackrf-dev-boun...@greatscottgadgets.com>> on behalf of > Simon Kennedy <si...@thekennedys.info <mailto:si...@thekennedys.info>> > *Date: *Tuesday, March 14, 2017 at 1:35 AM > *To: *hackrf-dev <hackrf-dev@greatscottgadgets.com > <mailto:hackrf-dev@greatscottgadgets.com>> > *Subject: *Re: [Hackrf-dev] not so good experience for my first SDR > > > > On gqrx choose menu option 'I/O Devices' then change Input Rate to a > low rate like 1000000 to change the sample rate to 1 Msps (bandwidth > of 1 MHz). Even my Intel Atom powered netbook will work with this > sample rate. My quad core i5-2400 handles 20 Mbps (20 MHz bandwidth) > well. Once you find a sample rate that works you can increase it > until you reach the limit of you processing power. > > > > On 13 March 2017 at 19:11, Dominic Spill <domini...@gmail.com > <mailto:domini...@gmail.com>> wrote: > > On 13 March 2017 at 13:09, mohammed hamoud alkindy > <moham...@omantel.net.om <mailto:moham...@omantel.net.om>> wrote: > > > > Yes I use gqrx and watched the lessons from greatscottgadgets. > if gqrx could allow to introduce throttling I would hsve test it > but could not see such feature > > _______________________________________________ HackRF-dev mailing > list HackRF-dev@greatscottgadgets.com > <mailto:HackRF-dev@greatscottgadgets.com> > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > <mailto: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
