Re: [Discuss-gnuradio] gr-psk31

[Tim K]

Hey there!

Boy, it's been a long time since I touched that code. It's very "hacked together", and needs some love!

I'd recommend trying psk31_rx.grc with this video[1]. If you have youtube-dl, you can save it to a wav file.

For the TX side, I didn't really get that flushed out properly. The audio sink doesn't like it when you stop sending samples to it, and I couldn't figure out a tidy way to clean things up.

In the mean time, look at the vector source in psk31_tx.grc. \x80 is the "preamble" byte, and everything else is just plain ASCII.

That should get you up and running! Maybe if I have some time later, I can get a transmitter block up and running with the osmocom sink. It's just a simple AM transmitter.

- Tim

[1] https://www.youtube.com/watch?v=qHNvp7FfP6E

On Sun, Jul 10, 2016 at 1:12 AM, Eoin 0w3n <address@hidden> wrote:

Hi,

  I've been having some fun with gr-psk32 (https://github.com/tkuester/gr-psk31).

  The aim is to be able to send ascii with a hackrf nd then receive with an rtlsdr.

   For now, I would just like to get the rx and tx examples working over audio/soundcard.

   I just added an audio source block to the "psk_rx.grc" and left the "psk_tx.grc" example as-is.

   When trying to tune on the right hand wide waterfall, I seem to get something close around 1850. I end up receiving "holmoewnrmg\n" which looks to be something related to the transmitted "hello world!\n" vector in the example.

   Has anyone got the tx and rx working for gr-psk32? Im sure its just a small setting somewhere.

   Thank you :-)

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