Thank you all for your help. It's a good starting point for what I need. On 21 March 2018 at 00:38, Ron Economos <[email protected]> wrote:
> I have a RTTY flow graph that you may find useful as a starting point. > It's transmit only (I was just using it to test the RTTY decoder on the > ICOM IC-7300 ham transceiver). > > http://www.w6rz.net/rtty.grc > > And a program to generate a baudot test file from a text file. > > http://www.w6rz.net/baudot.c > > Ron > > > On 03/20/2018 04:48 AM, Murray Thomson wrote: > >> Hi, >> >> I would like to build an FSK modulator/demodulator. I'm using file >> sink/sources for the moment. I need to be able to specify the two >> frequencies, baud rate and sample rate (ideally at runtime). >> I started with the gr-tutorial for qpsk, hoping to replace the >> modulation/demodulation with gfsk blocks, but I didn't get the result I was >> hoping for. I don't fully understand the gfsk module or how to change the >> frequencies after the modulation. I tried the fsk burst modem example, but >> it's not what I want. I would rather not use PDUs and I don't want to >> transmit in bursts. >> I would really appreciate if someone could point me to a tutorial or >> example on this. These are the resources I have read so far: >> >> https://github.com/gnuradio/gr-tutorial/blob/master/examples >> /tutorial7/mpsk_stage6.grc >> https://nccgroup.github.io/RFTM/fsk_transmitter.html >> https://www.reddit.com/r/GNURadio/comments/3u5zp2/gnu_radio_ >> gfsk_modulation_rate_deviation/ >> http://www.indigresso.com/wiki/doku.php?id=opentag:radios: >> testing_with_gnuradio >> https://oshearesearch.com/index.php/2015/05/31/building-a- >> burst-fsk-modem-in-gnu-radio-with-message-lambda-blocks-and-eventstream/ >> >> Many thanks, >> Murray >> >> >> > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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