Hey there,
I'm trying to create some simple transmitter programs as a basic
tutorial for myself, and I was wondering if someone would take a
quick look at my maximally simple AM transmitter program (just
trying to transmit a tone) and tell me where I've gone wrong.
Here's the program:
from gnuradio import gr
from gnuradio import audio
from gnuradio import usrp
from gnuradio.eng_option import eng_option
def build_graph ():
fg = gr.flow_graph ()
sampling_freq = 8000;
src1 = gr.sig_source_f ( sampling_freq, gr.GR_SIN_WAVE, 1090000, 4000000 )
src2 = gr.sig_source_f ( sampling_freq, gr.GR_SIN_WAVE, 600, 14000 )
dst = audio.sink (int (sampling_freq))
mixer = gr.multiply_ff()
fg.connect (src1, (mixer, 0))
fg.connect (src2, (mixer, 1))
f2c = gr.float_to_complex ()
fg.connect ( mixer, ( f2c, 0 ) );
usrp_interp = 400
u = usrp.sink_c (0, usrp_interp)
fg.connect(f2c, u)
return fg
def main():
fg = build_graph()
fg.start()
raw_input("Hit Enter to quit: ")
fg.stop()
if __name__ == '__main__':
main ()
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