Re: [Discuss-gnuradio] Loading 16-bit IQ pairs in GnuRadio Companion

[AndroidT Tester]

Thank you Paul, I never heard of gr-analysis before.
So I tried this:

gr_mkheader -r 1.8e6 -t sc16 -f 408e6 myheader

This only created myheader.hdr file. How can I link this to my actual recording sample which is 16-bit IQ pair and then convert it to CFile?

Do I concatenate the files? put myheader.hdr at top of my recording?

Sorry again for these newbie questions

On Thu, Dec 1, 2016 at 11:32 AM, Garver, Paul W <address@hidden> wrote:

Please copy the list next time so other folks can respond besides me.

Just attach a file sink to the ishort to complex block. There’s also a command-line tool called gr_fileman in gr-analysis [1] which will do this, but the file needs headers. If you don’t have them, you can generate with gr_mkheader in gr-analysis.

[1] https://github.com/garverp/gr-analysis

Hope this helps,

PWG

On Dec 1, 2016, at 9:22 AM, AndroidT Tester <address@hidden> wrote:

Now, how can I convert this to a CFILE format where I can play it in Gqrx? Thank you

On Wed, Nov 30, 2016 at 11:34 AM, AndroidT Tester <address@hidden> wrote:

Thank you very much! It worked :)

On Wed, Nov 30, 2016 at 11:04 AM, Garver, Paul W <address@hidden> wrote:

Use a file source block with “short” type into an “Ishort to Complex” block. The Ishort to Complex block will de-interleave the shorts into complex samples.

PWG

> On Nov 30, 2016, at 8:55 AM, AndroidT Tester <address@hidden> wrote:
>
> Hey guys,
>
> I have a sample file with IQ pairs, each I and Q is 16-bits, I want to load this in GNURadio companion using File source sink, but I'm not sure how can I specify 16-bit format for I and 16-bit for Q in Gnuradio companion and then connect it to lets say FFT or Waterfall widget. Can someone advise a bit?
>
> Thank you!

> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio