Hoang, there's the frequency modulator block. I think this is what you're looking for.
Best regards, Marcus On 03.09.2015 07:03, Hoang Nguyen Tran wrote: > Hi Rich, > I am continue with the transmitting part ? > However, I cannot fine the FSK modulate block or Quadrature mod in GNU > radio companion. > Is there another block that use for FSK modulation in GNU radio ? I > found DPSK mod, GFSK mod, GMSK mod ... however not FSK. > Do you have any example for transmitting flow graph in GNU radio with > USRP ? If yes, could you please give any hint ? > Thank you and best regard > Hoang > > On Mon, Aug 31, 2015 at 7:31 PM, Hoang Nguyen Tran > <hoangn...@gmail.com <mailto:hoangn...@gmail.com>> wrote: > > Thank you Rich, > I have added Rational Resample with the formular : Fs_out = Fs_in > x Interpolation / Decimation > Then the grc run without error. > > > On Fri, Aug 28, 2015 at 7:03 PM, Richard Bell > <richard.be...@gmail.com <mailto:richard.be...@gmail.com>> wrote: > > Hi Hoang, > > Yes it's a problem with your design. You have 2 Msps feeding > into an audio sink that probably goes up to 48 ksps. You need > to change your sample rate from 2 Msps to a rate your sound > card supports. I would target one of the default rates you can > select from the audio sink. You can use polyphase arbitrary > resampler block with the proper resampling ratio 2M/48k > entered leaving the taps blank and the other parameters to > default. > > Hope that helps, > Rich > > On Fri, Aug 28, 2015 at 2:19 PM, Hoang Nguyen Tran > <hoangn...@gmail.com <mailto:hoangn...@gmail.com>> wrote: > > Dear all, > > I have just built a FSK receiver aim to receive Cubesat > data with FSK modulation with 9600 baud rate, below is my > flow graph. > I have just tested it with usb dongle RTL-SDR, however > when I'm using audio sink, I received OOOOO (overrun I > think) continuously . > Does it have anything wrong with my set up ? > > samplerate 2M > cut off freq 9600 > transition 4800 > > I really appriciate for any comment on my FSK receiver > flowgraph, I am a newbie :) > > Thank you and best regard, > Hoang > > -- > -HoangNT- > PhoneNo : +841654248782 <tel:%2B841654248782> > Skype : hoangastro > FB : https://www.facebook.com/kenshin.rorouni > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > -- > -HoangNT- > PhoneNo : +841654248782 <tel:%2B841654248782> > Skype : hoangastro > FB : https://www.facebook.com/kenshin.rorouni > > > > > -- > -HoangNT- > PhoneNo : +841654248782 > Skype : hoangastro > FB : https://www.facebook.com/kenshin.rorouni > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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