Ok my center frequency is 1090 MHz The on off rate is 1 MB/s I think from memory
I have noticed the sampling rate determines the frequency span 10 MHz = 10 MHz So there is a stream of I and Q coming out What is I and Q telling me ? Is I how far along the scan it is ? And is Q telling me how big the signal Is ? Would an IQ file contain a whole heap of scans ? I = X axis Q = Y axis I would need to sample fast enough as to not miss an amplitude change I want to see I guess an IQ file is not plain text but 8 bit numbers packed ? Does it go IQIQIQIQ ? What relationship is I and Q to the center frequency ? I think the signal amplitude resolution is described as 8 or 12 bits ? So as the ADC is pumping out numbers, which it has no control over , it is just sampling the signal. Why does it not just out put values of amplitude ? Or is that what the I is about ? I am just trying to work out if I record 1090 MHz which is basically OOK on off keying, what would be contained in the file ? Am I right with the 8 bits , IQIQIQ ? Andy Sent from my iPhone > On 9 Jul 2017, at 5:18 am, Cinaed Simson <cinaed.sim...@gmail.com> wrote: > >> On 07/08/2017 06:44 AM, Gregory Ratcliff wrote: >> Great request! I would like to see this also. >> >> Greg >> Nz8r >> >> Sent from my iPad > > A flowgraph as in gnuradio? > > Don't know. > > How about a python script using qt and gnuradio? > > Try > > https://github.com/bistromath/gr-air-modes > > You'll need to build it - might need a development environment. > > If you know what you're doing then you could probably build a flow graph > from gr-air-modes python scripts. > > -- Cinaed > > > > > > >> >> On Jul 8, 2017, at 6:23 AM, <vk4...@tech-software.net >> <mailto:vk4...@tech-software.net>> <vk4...@tech-software.net >> <mailto:vk4...@tech-software.net>> wrote: >> >>> Hello Guys >>> >>> >>> >>> I have a hack rf, GNURadio and MacBook Pro >>> >>> >>> >>> Can someone point me towards a flow graph that would show me the >>> pulses on 1090 MHz >>> >>> >>> >>> Showing the preamble and 56 and 112 bits please >>> >>> >>> >>> Andrew >>> >>> >>> >>> >>> >>> _______________________________________________ >>> 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 _______________________________________________ HackRF-dev mailing list HackRF-dev@greatscottgadgets.com https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
