Sun Jul 15 15:11:20 2012 options id top_block _enabled True title author description window_size 1280, 1024 generate_options qt_gui category Custom run_options prompt run True realtime_scheduling _coordinate (10, 10) _rotation 0 gr_complex_to_float id gr_complex_to_float_0 _enabled True vlen 1 _coordinate (771, 414) _rotation 0 digital_binary_slicer_fb id digital_binary_slicer_fb_0 _enabled True _coordinate (1027, 391) _rotation 0 variable id samp_rate _enabled True value 250e3 _coordinate (183, 14) _rotation 0 variable id xlate_filter_taps _enabled True value firdes.low_pass(1, samp_rate, samp_rate/2, 25000, firdes.WIN_HAMMING, 6.76) _coordinate (397, 17) _rotation 0 uhd_usrp_source id uhd_usrp_source_0 _enabled True type fc32 otw stream_args dev_addr sync clock_rate 0.0 num_mboards 1 clock_source0 time_source0 sd_spec0 A:0 clock_source1 time_source1 sd_spec1 clock_source2 time_source2 sd_spec2 clock_source3 time_source3 sd_spec3 clock_source4 time_source4 sd_spec4 clock_source5 time_source5 sd_spec5 clock_source6 time_source6 sd_spec6 clock_source7 time_source7 sd_spec7 nchan 1 samp_rate samp_rate center_freq0 144360000 gain0 25 ant0 RX2 bw0 0 center_freq1 0 gain1 0 ant1 bw1 0 center_freq2 0 gain2 0 ant2 bw2 0 center_freq3 0 gain3 0 ant3 bw3 0 center_freq4 0 gain4 0 ant4 bw4 0 center_freq5 0 gain5 0 ant5 bw5 0 center_freq6 0 gain6 0 ant6 bw6 0 center_freq7 0 gain7 0 ant7 bw7 0 center_freq8 0 gain8 0 ant8 bw8 0 center_freq9 0 gain9 0 ant9 bw9 0 center_freq10 0 gain10 0 ant10 bw10 0 center_freq11 0 gain11 0 ant11 bw11 0 center_freq12 0 gain12 0 ant12 bw12 0 center_freq13 0 gain13 0 ant13 bw13 0 center_freq14 0 gain14 0 ant14 bw14 0 center_freq15 0 gain15 0 ant15 bw15 0 center_freq16 0 gain16 0 ant16 bw16 0 center_freq17 0 gain17 0 ant17 bw17 0 center_freq18 0 gain18 0 ant18 bw18 0 center_freq19 0 gain19 0 ant19 bw19 0 center_freq20 0 gain20 0 ant20 bw20 0 center_freq21 0 gain21 0 ant21 bw21 0 center_freq22 0 gain22 0 ant22 bw22 0 center_freq23 0 gain23 0 ant23 bw23 0 center_freq24 0 gain24 0 ant24 bw24 0 center_freq25 0 gain25 0 ant25 bw25 0 center_freq26 0 gain26 0 ant26 bw26 0 center_freq27 0 gain27 0 ant27 bw27 0 center_freq28 0 gain28 0 ant28 bw28 0 center_freq29 0 gain29 0 ant29 bw29 0 center_freq30 0 gain30 0 ant30 bw30 0 center_freq31 0 gain31 0 ant31 bw31 0 _coordinate (12, 79) _rotation 0 variable id psk_rate _enabled True value 31.25 _coordinate (554, 17) _rotation 0 gr_multiply_const_vxx id gr_multiply_const_vxx_0 _enabled True type complex const 2048e3 vlen 1 _coordinate (282, 112) _rotation 0 gr_freq_xlating_fir_filter_xxx id xlating_fir_filter_0 _enabled True type ccc decim 1 taps xlate_filter_taps center_freq -1500 samp_rate samp_rate _coordinate (476, 88) _rotation 0 gr_file_sink id gr_file_sink_0 _enabled True file /tmp/bpsk_fifo_a type byte vlen 1 unbuffered True _coordinate (1039, 452) _rotation 180 gr_file_sink id gr_file_sink_0_0 _enabled True file /tmp/bpsk_fifo_b type byte vlen 1 unbuffered True _coordinate (1008, 569) _rotation 180 variable id samp_rate_base _enabled True value 24000 _coordinate (279, 15) _rotation 0 virtual_source id virtual_source_0 _enabled True stream_id decoder-a _coordinate (11, 443) _rotation 0 digital_mpsk_receiver_cc id digital_mpsk_receiver_cc_0 _enabled True M 2 theta 0 w 0.01 fmin 500/samp_rate_base fmax 1500/samp_rate_base mu 1 gain_mu 0.005 omega samp_rate_base/psk_rate gain_omega ((samp_rate_base/psk_rate)**2)/4 omega_relative_limit 0.005 _coordinate (243, 377) _rotation 0 blks2_rational_resampler_xxx id blks2_rational_resampler_xxx_0 _enabled True type ccc decim 250000 interp samp_rate_base taps [] fractional_bw 0 _coordinate (1012, 260) _rotation 180 gr_diff_phasor_cc id gr_diff_phasor_cc_0 _enabled True _coordinate (524, 421) _rotation 0 band_pass_filter id band_pass_filter_0_0_0 _enabled True type fir_filter_ccf decim 1 interp 1 gain 1 samp_rate samp_rate low_cutoff_freq 1 high_cutoff_freq 16000 width 600 win firdes.WIN_HAMMING beta 6.76 _coordinate (743, 56) _rotation 0 gr_agc2_xx id gr_agc2_xx_0 _enabled True type complex attack_rate 1e-1 decay_rate 50e-6 reference 9e-1 gain 1.0 max_gain 1.0 _coordinate (1150, 106) _rotation 270 gr_simple_squelch_cc id gr_simple_squelch_cc_0 _enabled False threshold 38 alpha 1 _coordinate (985, 97) _rotation 0 virtual_sink id virtual_sink_0 _enabled True stream_id decoder-a _coordinate (1003, 184) _rotation 0 digital_psk_demod id digital_psk_demod_0 _enabled True constellation_points 2 differential False samples_per_symbol int(samp_rate_base/psk_rate) excess_bw 0.01 freq_bw 0.01 timing_bw 0.01 phase_bw 0.01 gray_coded "none" verbose False log False _coordinate (225, 580) _rotation 0 gr_packed_to_unpacked_xx id gr_packed_to_unpacked_xx_0 _enabled True type byte bits_per_chunk 8 endianness gr.GR_MSB_FIRST num_ports 1 _coordinate (610, 630) _rotation 0 band_pass_filter_0_0_0 gr_simple_squelch_cc_0 0 0 gr_simple_squelch_cc_0 gr_agc2_xx_0 0 0 gr_multiply_const_vxx_0 xlating_fir_filter_0 0 0 xlating_fir_filter_0 band_pass_filter_0_0_0 0 0 uhd_usrp_source_0 gr_multiply_const_vxx_0 0 0 blks2_rational_resampler_xxx_0 virtual_sink_0 0 0 gr_diff_phasor_cc_0 gr_complex_to_float_0 0 0 gr_complex_to_float_0 digital_binary_slicer_fb_0 0 0 digital_binary_slicer_fb_0 gr_file_sink_0 0 0 digital_mpsk_receiver_cc_0 gr_diff_phasor_cc_0 0 0 virtual_source_0 digital_mpsk_receiver_cc_0 0 0 band_pass_filter_0_0_0 gr_agc2_xx_0 0 0 virtual_source_0 digital_psk_demod_0 0 0 digital_psk_demod_0 gr_packed_to_unpacked_xx_0 0 0 gr_packed_to_unpacked_xx_0 gr_file_sink_0_0 0 0 gr_agc2_xx_0 blks2_rational_resampler_xxx_0 0 0