├── CHANGES ├── Demodulator.py ├── LICENSE ├── README.md ├── Recorder.py ├── configuration.py ├── mdc-post-example.bash ├── multirx_nogui.py ├── receiver2.xml ├── run.bash └── ttd-post-example.bash /CHANGES: -------------------------------------------------------------------------------- 1 | 20210911 Maintenance Release 2 | 3 | Made some changes to make it more maintainable and configurable. 4 | 5 | Moved lots of settings that were hard coded to the XML file 6 | 7 | Squelch can be set per channel 8 | 9 | A separate postscript can be called per channel (i.e. TWO TONE decode or ID decode) 10 | 11 | -------------------------------------------------------------------------------- /Demodulator.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | from gnuradio import analog 4 | from gnuradio import audio 5 | from gnuradio import blocks 6 | from gnuradio import eng_notation 7 | from gnuradio import filter 8 | from gnuradio import gr 9 | from gnuradio.eng_option import eng_option 10 | from gnuradio.filter import firdes 11 | from gnuradio.filter import pfb 12 | from optparse import OptionParser 13 | import math 14 | import numpy as np 15 | import osmosdr 16 | import time 17 | import os 18 | import os.path 19 | import string 20 | 21 | 22 | class Demodulator(gr.hier_block2): 23 | def __init__(self, samp_rate=2E6, demod_bb_freq=0, squelch=50, tone=0): 24 | gr.hier_block2.__init__(self, "Demodulator", 25 | gr.io_signature(1, 1, gr.sizeof_gr_complex), 26 | gr.io_signature(1, 1, gr.sizeof_short)) 27 | 28 | self.initial_decim = initial_decim = 5 29 | self.samp_ratio = samp_ratio = samp_rate/1E6 30 | self.final_rate = final_rate = samp_rate/initial_decim**2/int(samp_rate/1E6) 31 | self.variable_low_pass_filter_taps_0 = firdes.low_pass(1.0, 1, 0.090, 0.010, firdes.WIN_HAMMING, 6.76) 32 | self.variable_low_pass_filter_taps_1 = firdes.low_pass(1.0, samp_rate/25, 12.5E3, 1E3, firdes.WIN_HAMMING, 6.76) 33 | self.variable_low_pass_filter_taps_2 = firdes.low_pass(1.0, final_rate, 3500, 500, firdes.WIN_HAMMING, 6.76) 34 | self.variable_band_pass_filter_taps_3 = firdes.band_pass(1.0, 16E3, 300, 2800, 100, firdes.WIN_HAMMING, 6.76) 35 | self.squelch_dB = squelch_dB = -squelch 36 | self.ctcss_freq = tone 37 | self.ctcss_samp_rate = int(samp_rate/((self.initial_decim**2)*(samp_rate/1E6))) 38 | self.final_decim = final_decim = int(samp_rate/1E6) 39 | 40 | self.freq_xlating_fir_filter = filter.freq_xlating_fir_filter_ccc( 41 | initial_decim, (self.variable_low_pass_filter_taps_0), demod_bb_freq, samp_rate) 42 | 43 | self.fir_filter_0 = filter.fir_filter_ccc(initial_decim, (self.variable_low_pass_filter_taps_0)) 44 | self.fir_filter_0.declare_sample_delay(0) 45 | 46 | self.fir_filter_1 = filter.fir_filter_ccc(int(samp_rate/1E6), (self.variable_low_pass_filter_taps_1)) 47 | self.fir_filter_1.declare_sample_delay(0) 48 | 49 | self.analog_pwr_squelch_0 = analog.pwr_squelch_cc(squelch_dB, 0.1, 0, False) 50 | 51 | self.quadrature_demod = analog.quadrature_demod_cf(1) 52 | 53 | self.analog_ctcss_squelch_0 = analog.ctcss_squelch_ff( \ 54 | self.ctcss_samp_rate, self.ctcss_freq, .01, 0, 0, False) 55 | 56 | self.fir_filter_2 = filter.fir_filter_fff(initial_decim, (self.variable_low_pass_filter_taps_2)) 57 | self.fir_filter_2.declare_sample_delay(0) 58 | 59 | self.pfb_arb_resampler_xxx_0 = \ 60 | pfb.arb_resampler_fff(16E3/float(final_rate/5), taps=None, flt_size=32) 61 | #self.pfb_arb_resampler_xxx_0.declare_sample_delay(0) 62 | 63 | self.band_pass_filter = filter.fir_filter_fff(1, (self.variable_band_pass_filter_taps_3)) 64 | 65 | self.float_to_short = blocks.float_to_short(scale=32768.0) 66 | 67 | self.connect(self, (self.freq_xlating_fir_filter, 0)) 68 | self.connect((self.freq_xlating_fir_filter, 0), (self.fir_filter_0, 0)) 69 | self.connect((self.fir_filter_0, 0), (self.fir_filter_1, 0)) 70 | 71 | self.connect((self.fir_filter_1, 0), (self.analog_pwr_squelch_0, 0)) 72 | self.connect((self.analog_pwr_squelch_0, 0), (self.quadrature_demod, 0)) 73 | 74 | if self.ctcss_freq == 0: 75 | self.connect((self.quadrature_demod, 0), (self.fir_filter_2, 0)) 76 | else: 77 | self.connect((self.quadrature_demod, 0), (self.analog_ctcss_squelch_0, 0)) 78 | self.connect((self.analog_ctcss_squelch_0, 0), (self.fir_filter_2, 0)) 79 | 80 | self.connect((self.fir_filter_2, 0), (self.pfb_arb_resampler_xxx_0, 0)) 81 | self.connect((self.pfb_arb_resampler_xxx_0, 0), (self.band_pass_filter, 0)) 82 | self.connect((self.band_pass_filter, 0), (self.float_to_short, 0)) 83 | self.connect((self.float_to_short, 0), self) 84 | 85 | class examplerx(gr.top_block): 86 | def __init__(self): 87 | gr.top_block.__init__(self, "MULTIRX testing") 88 | 89 | self.center_freq = 162400000 90 | self.squelch = -100 91 | 92 | 93 | self.samp_rate = samp_rate = 1E6 94 | self.gain_db = gain_db = 30 95 | 96 | self.osmosdr_source = osmosdr.source( args="numchan=" + str(1) + " " + "rtl" ) 97 | self.osmosdr_source.set_sample_rate(samp_rate) 98 | self.osmosdr_source.set_center_freq(self.center_freq, 0) 99 | self.osmosdr_source.set_freq_corr(69, 0) #move this to option 100 | self.osmosdr_source.set_dc_offset_mode(0, 0) 101 | self.osmosdr_source.set_iq_balance_mode(0, 0) 102 | self.osmosdr_source.set_gain_mode(False, 0) 103 | self.osmosdr_source.set_gain(gain_db, 0) 104 | self.osmosdr_source.set_if_gain(20, 0) 105 | self.osmosdr_source.set_bb_gain(20, 0) 106 | self.osmosdr_source.set_antenna("", 0) 107 | self.osmosdr_source.set_bandwidth(samp_rate*0.8, 0) 108 | 109 | self.audio_sink = audio.sink(16000, "", True) 110 | self.blocks_short_to_float = blocks.short_to_float(1, 32768) 111 | 112 | self.demod_bb_freq = 0 113 | self.ctcss_freq = 0 114 | self.demod = Demodulator(self.samp_rate) 115 | self.connect((self.osmosdr_source, 0), (self.demod, 0)) 116 | self.connect((self.demod, 0), (self.blocks_short_to_float, 0)) 117 | self.connect((self.blocks_short_to_float, 0), (self.audio_sink, 0)) 118 | 119 | if __name__ == '__main__': 120 | tb = examplerx() 121 | tb.start() 122 | try: 123 | input('Press Enter to quit: ') 124 | except EOFError: 125 | pass 126 | tb.stop() 127 | tb.wait() 128 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. {http://fsf.org/} 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see {http://www.gnu.org/licenses/}. 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | scanoo Copyright (C) 2013 Mike Jameson 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | {http://www.gnu.org/licenses/}. 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | {http://www.gnu.org/philosophy/why-not-lgpl.html}. 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # multirx 2 | Receive Multiple channels in the bandwidth of an SDR converter (RTL-SDR) optionally recording or streaming to an ICECAST server 3 | 4 | Originally designed to allow Emergency Service Volunteers (Fire, EMT, ...) to 5 | monitor radio channels over internet connected devices and review prior calls. 6 | 7 | This was my first attempt at doing anything with Python and GNURadio ... so all 8 | standard disclaimers apply. 9 | 10 | I have also shamelessly used the HAM2MON project as inspiration and general 11 | structure. While HAM2MON is a great curses based app for monitoring ALL activity 12 | in a given bandwidth MULTIRX was designed as a server application to stream and 13 | record specific channels. 14 | 15 | http://www.rtl-sdr.com/ham2mon-a-nbfm-multi-channel-receiver-for-the-rtl-sdr/ 16 | 17 | https://github.com/madengr/ham2mon 18 | 19 | This is still a work in progress. There is LOTS of opportunity for improvement 20 | in handling error cases or improving overall useability. Constructed comments always 21 | appreciated. Special thanks to my orginal BETA (more like ALPHA) testers: KG2F, 22 | K2CO, and K2RI. 23 | 24 | DEPENDANCIES (lots I'm forgetting) 25 | - GNURADIO 26 | - OSMOSDR 27 | -------------------------------------------------------------------------------- /Recorder.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | from gnuradio import analog 4 | from gnuradio import audio 5 | from gnuradio import blocks 6 | from gnuradio import eng_notation 7 | from gnuradio import filter 8 | from gnuradio import gr 9 | from gnuradio.eng_option import eng_option 10 | import threading 11 | import subprocess 12 | import time 13 | import os 14 | import logging 15 | 16 | class Recorder(gr.hier_block2): 17 | def __init__(self, samp_rate=16E3, name="unnamed", save_dir=None, postscript=None): 18 | gr.hier_block2.__init__(self, "Recorder", 19 | gr.io_signature(1, 1, gr.sizeof_float), gr.io_signature(1, 1, gr.sizeof_float)) 20 | 21 | self.timeout = 18000 22 | self.save_dir = save_dir 23 | self.postscript = postscript 24 | self.record_squelch = analog.pwr_squelch_ff(-200, 0.1, 0, True) 25 | self.blocks_wavfile_sink = blocks.wavfile_sink("/dev/null", 1, samp_rate, 16) 26 | self.blocks_null_source = blocks.null_source(gr.sizeof_float*1) 27 | self.connect(self, (self.record_squelch, 0)) 28 | self.connect((self.record_squelch, 0), (self.blocks_wavfile_sink, 0)) 29 | self.connect((self.blocks_null_source, 0), self) 30 | 31 | thread = threading.Thread(target=self.timer_thread, 32 | args=(name, self.save_dir, self.blocks_wavfile_sink, \ 33 | self.record_squelch, self.postscript, self.timeout)) 34 | thread.daemon = True 35 | thread.start() 36 | 37 | def timer_thread(self, name, save_dir, wavfile_sink, rec_squelch, postscript, timeout): 38 | 39 | file_open = False 40 | on_counter = 0 41 | off_counter = 0 42 | sql_open = False 43 | 44 | while True: 45 | if rec_squelch.unmuted(): 46 | off_counter = 0 47 | if not sql_open: 48 | sql_open = True 49 | logging.info("%s open", name) 50 | if file_open: 51 | on_counter+=1 52 | else: 53 | tstamp = "_" + time.strftime("%Y%m%d-%H%M%S") 54 | start_time = time.time() 55 | file_name = save_dir + "/" + name + tstamp + ".wav" 56 | wavfile_sink.open(file_name) 57 | file_open = True 58 | on_counter = 0 59 | logging.info("Started new file %s ", file_name) 60 | else: 61 | if sql_open: 62 | sql_open = False 63 | logging.info("%s closed", name) 64 | if file_open: 65 | #close file if idle for 1min or open for tenth-seconds 66 | if off_counter > 600 or on_counter > timeout: 67 | end_time = time.time()-(off_counter/10) 68 | if on_counter < timeout: 69 | logging.info("closing %s after %d seconds of inactivity", \ 70 | file_name, int(off_counter/10)) 71 | logging.info("Total Activity %d seconds", \ 72 | (int(on_counter/10))) 73 | else: 74 | logging.info("closing %s after %d seconds of activity", \ 75 | file_name, int(on_counter/10)) 76 | wavfile_sink.close() 77 | file_open = False 78 | #delete file if less then 4 seconds 79 | if on_counter < 40: 80 | logging.info("deleting %s with only %d seconds activity", \ 81 | file_name, int(on_counter/10)) 82 | os.unlink(file_name) 83 | else: 84 | self.convert_file(file_name, save_dir, name, \ 85 | postscript, start_time, end_time) 86 | else: 87 | off_counter+=1 88 | 89 | time.sleep(0.1) 90 | 91 | def convert_file(self, old_filename, sdir, cname, postscript, stime, etime): 92 | 93 | os.putenv("TZ", "EST5EDT") 94 | new_file_name = sdir + "/" + cname + "/" 95 | new_file_name += time.strftime("%Y%m%d", time.localtime(stime)) 96 | 97 | try: 98 | os.makedirs(new_file_name) 99 | except OSError: 100 | pass 101 | 102 | new_file_name += "/" + time.strftime("%H%M%S", time.localtime(stime)) 103 | new_file_name += "_" 104 | new_file_name += time.strftime("%H%M%S", time.localtime(etime)) 105 | new_file_name += ".mp3" 106 | subprocess.call(['lame', '--silent', old_filename, new_file_name]) 107 | if postscript is not None: 108 | subprocess.call([postscript, old_filename, new_file_name]) 109 | else: 110 | os.unlink(old_filename) 111 | 112 | class RecTest(gr.top_block): 113 | def __init__(self): 114 | gr.top_block.__init__(self, "RecTest") 115 | 116 | samp_rate = 16000 117 | 118 | self.source = analog.sig_source_f(samp_rate, analog.GR_SIN_WAVE, 1000, 1, 0) 119 | self.recorder = Recorder(samp_rate, "testname") 120 | self.throttle = blocks.throttle(gr.sizeof_float*1, samp_rate,True) 121 | self.mute = blocks.mute_ff(bool(False)) 122 | 123 | self.connect((self.source, 0), (self.throttle, 0), (self.mute, 0), (self.recorder, 0)) 124 | 125 | if __name__ == '__main__': 126 | 127 | logging.basicConfig(format='%(asctime)s %(message)s', \ 128 | datefmt='%m/%d/%Y %H:%M:%S', level=logging.DEBUG) 129 | 130 | tb = RecTest() 131 | tb.start() 132 | 133 | print("\nstarting test cycle ...\n") 134 | tb.mute.set_mute(False) 135 | print("test loop unmute: 10 second transmission") 136 | time.sleep(10) 137 | 138 | print("test loop mute: Quiet for 65 seconds") 139 | tb.mute.set_mute(True) 140 | time.sleep(65) 141 | 142 | print("test loop unmute: 3 second transmission") 143 | tb.mute.set_mute(False) 144 | time.sleep(3) 145 | 146 | print("test loop mute: Quiet for 65 seconds") 147 | tb.mute.set_mute(True) 148 | time.sleep(65) 149 | 150 | print("test loop unmute: 10 minute transmission") 151 | tb.mute.set_mute(False) 152 | time.sleep(600) 153 | 154 | print("test loop mute: Quiet for 10 seconds") 155 | tb.mute.set_mute(True) 156 | time.sleep(10) 157 | 158 | print("test loop unmute: 10 minute transmission") 159 | tb.mute.set_mute(False) 160 | time.sleep(600) 161 | 162 | print("test loop mute: Quiet for 15 seconds") 163 | tb.mute.set_mute(True) 164 | time.sleep(15) 165 | 166 | print("test loop unmute: 11 minute transmission") 167 | tb.mute.set_mute(False) 168 | time.sleep(660) 169 | 170 | print("test loop mute: Quiet for 40 seconds") 171 | tb.mute.set_mute(True) 172 | time.sleep(40) 173 | 174 | print("test loop unmute: 3 minute transmission") 175 | tb.mute.set_mute(False) 176 | time.sleep(180) 177 | 178 | print("test loop mute: Quiet for 70 seconds") 179 | tb.mute.set_mute(True) 180 | time.sleep(70) 181 | 182 | print("\ntest cycle complete\n") 183 | 184 | try: 185 | input('Press Enter to quit: ') 186 | except EOFError: 187 | pass 188 | tb.stop() 189 | tb.wait() 190 | -------------------------------------------------------------------------------- /configuration.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | import xml.etree.ElementTree as ET 4 | import sys 5 | 6 | class Configuration: 7 | def __init__(self, filename): 8 | try: 9 | tree = ET.parse(filename) 10 | except IOError: 11 | sys.exit("configuration file not found.") 12 | 13 | root = tree.getroot() 14 | 15 | self._serial = root.find('system/serial') 16 | self._gain = root.find('system/gain') 17 | self._freq_corr = root.find('system/freq_corr') 18 | self._save_dir = root.find('system/save_dir') 19 | self._ice_host = root.find('system/ice_host') 20 | self._ice_port = root.find('system/ice_port') 21 | self._ice_auth = root.find('system/ice_auth') 22 | 23 | # Create an array of tuples with the channel info 24 | self.channel = [] 25 | for i in root.findall('channel'): 26 | frequency = int(float(i.find('frequency').text)*1E6) 27 | key = i.find('key').text 28 | description = i.find('description').text 29 | ctcss = float(i.find('ctcss').text) 30 | _postscript = i.find('postscript') 31 | if _postscript is not None: 32 | postscript = _postscript.text 33 | else: 34 | postscript = None 35 | _squelch = i.find('squelch') 36 | if _squelch is not None: 37 | squelch = int(_squelch.text) 38 | else: 39 | squelch = 20 40 | 41 | self.channel.append((key, frequency, description, ctcss, postscript, squelch)) 42 | 43 | # Find the highest Channel 44 | self.high = 0 45 | for j in self.channel: 46 | if j[1] > self.high: 47 | self.high = j[1] 48 | 49 | # Find the lowest Channel 50 | self.low = float("inf") 51 | for j in self.channel: 52 | if j[1] < self.low: 53 | self.low = j[1] 54 | 55 | #Calculate the span from low to high 56 | self.width = self.upper() - self.lower() 57 | 58 | #Calculate the center of the span 59 | self.middle = self.lower() + (self.span()/2) 60 | 61 | 62 | def ice_host(self): 63 | if self._ice_host is not None: 64 | return self._ice_host.text 65 | else: 66 | return None 67 | 68 | def ice_port(self): 69 | if self._ice_port is not None: 70 | return int(self._ice_port.text) 71 | else: 72 | return None 73 | 74 | def ice_auth(self): 75 | if self._ice_auth is not None: 76 | return self._ice_auth.text 77 | else: 78 | return None 79 | 80 | def save_dir(self): 81 | if self._save_dir is not None: 82 | return self._save_dir.text 83 | else: 84 | return None 85 | 86 | def freq_corr(self): 87 | if self._freq_corr is not None: 88 | return int(self._freq_corr.text) 89 | else: 90 | return int(0) 91 | 92 | def gain(self): 93 | if self._gain is not None: 94 | return int(self._gain.text) 95 | else: 96 | return int(0) 97 | 98 | def serial(self): 99 | return self._serial.text 100 | 101 | def upper(self): 102 | return self.high 103 | 104 | def lower(self): 105 | return self.low 106 | 107 | def center(self): 108 | return self.middle 109 | 110 | def span(self): 111 | return self.width 112 | 113 | if __name__ == '__main__': 114 | 115 | config = Configuration('receiver2.xml') 116 | 117 | high = config.upper() 118 | low = config.lower() 119 | center = config.center() 120 | span = config.span() 121 | ser_num = config.serial() 122 | save_dir = config.save_dir() 123 | 124 | print("Device serial#: %s" % ser_num) 125 | print("Save Directory: %s" % save_dir) 126 | print("Gain=%d, Freq_Correction=%d" % 127 | (config.gain(), config.freq_corr())) 128 | print("ice_host: %s, ice_port: %d, ice_auth: %s" % (config.ice_host(), 129 | config.ice_port(), config.ice_auth())) 130 | print("high=%d low=%d" % (high, low)) 131 | print("center=%d" % center) 132 | print("span=%d" % span) 133 | for i in config.channel: 134 | print(i) 135 | -------------------------------------------------------------------------------- /mdc-post-example.bash: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | SAVE_DIR=/var/www/html/wav 3 | NEWFILE=/home/user/sdr/multirx2/save/$(basename $1 .wav).raw 4 | sox $1 -b 16 -e signed-integer -r16000 -t raw $NEWFILE 5 | rm $1 6 | echo "$(date) $1 $2 $NEWFILE" >> /home/user/sdr/multirx2/post.log 7 | 8 | for a in $(/home/user/mdc-decode/mdc_decoder $NEWFILE | cut -d' ' -f4 | sort -u) 9 | do 10 | mkdir -p ${SAVE_DIR}/units/$a 11 | ln -s $2 ${SAVE_DIR}/units/$a 12 | echo "$(date) $a $2" >> /home/user/sdr/multirx2/post.log 13 | done 14 | -------------------------------------------------------------------------------- /multirx_nogui.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | from gnuradio import analog 4 | from gnuradio import audio 5 | from gnuradio import blocks 6 | from gnuradio import eng_notation 7 | from gnuradio import filter 8 | from gnuradio import gr 9 | from gnuradio.eng_option import eng_option 10 | from gnuradio.filter import firdes 11 | from gnuradio.filter import pfb 12 | from optparse import OptionParser 13 | import sys 14 | import math 15 | import numpy as np 16 | import osmosdr 17 | import time 18 | import os 19 | import os.path 20 | import subprocess 21 | import threading 22 | import select 23 | import fcntl 24 | import socket 25 | import string 26 | from base64 import b64encode 27 | import configuration 28 | import Recorder 29 | import Demodulator 30 | import logging 31 | 32 | class multirx_example(gr.top_block): 33 | def __init__(self, filename, options): 34 | gr.top_block.__init__(self, "MULTIRX2") 35 | 36 | config = configuration.Configuration(filename) 37 | self.center_freq = config.center() 38 | self.save_dir = config.save_dir() 39 | 40 | print("Starting Multirx ...") 41 | print("low=%d center=%d high=%d span=%d" % (config.lower(), 42 | config.center(), config.upper(), 43 | (config.upper() - config.lower()))) 44 | 45 | self.samp_rate = samp_rate = 1E6 46 | 47 | dev_args="numchan=" + str(1) + " rtl=" + config.serial() 48 | print("Device Args: %s" % dev_args) 49 | self.osmosdr_source = osmosdr.source( args=dev_args ) 50 | self.osmosdr_source.set_sample_rate(samp_rate) 51 | self.osmosdr_source.set_center_freq(self.center_freq, 0) 52 | self.osmosdr_source.set_freq_corr(config.freq_corr(), 0) 53 | self.osmosdr_source.set_dc_offset_mode(0, 0) 54 | self.osmosdr_source.set_iq_balance_mode(0, 0) 55 | if config.gain() == 0: 56 | self.osmosdr_source.set_gain_mode(True, 0) 57 | else: 58 | self.osmosdr_source.set_gain_mode(False, 0) 59 | self.osmosdr_source.set_gain(config.gain(), 0) 60 | self.osmosdr_source.set_if_gain(20, 0) 61 | self.osmosdr_source.set_bb_gain(20, 0) 62 | self.osmosdr_source.set_antenna("", 0) 63 | self.osmosdr_source.set_bandwidth(0, 0) 64 | 65 | self.blocks_adder = blocks.add_vss(1) 66 | 67 | for self.i, self.entry in enumerate(config.channel): 68 | self.demod_bb_freq = self.entry[1] - self.center_freq 69 | self.ctcss_freq = self.entry[3] 70 | self.postscript = self.entry[4] 71 | self.squelch = self.entry[5] 72 | self.demod = Demodulator.Demodulator(self.samp_rate, \ 73 | self.demod_bb_freq, self.squelch, self.ctcss_freq) 74 | self.fname = self.setup_upstream_pipe(self.entry[0], self.entry[2], config) 75 | self.file_sink = blocks.file_sink(gr.sizeof_short*1, self.fname, True) 76 | self.connect((self.osmosdr_source, 0), (self.demod, 0), (self.file_sink, 0)) 77 | self.connect((self.demod, 0), (self.blocks_adder, self.i)) 78 | self.rec = Recorder.Recorder(16000, self.entry[0], self.save_dir, self.postscript) 79 | self.connect((self.demod, 0), (blocks.short_to_float(1, 32768), 0), (self.rec, 0)) 80 | time.sleep(1) #space things out a bit 81 | 82 | if options.multiplex: 83 | self.fname = self.setup_upstream_pipe("multiplex", "Multiplex Channel") 84 | self.file_sink = blocks.file_sink(gr.sizeof_short*1, self.fname, True) 85 | self.connect((self.blocks_adder, 0), (self.file_sink, 0)) 86 | 87 | if options.local: 88 | self.audio_sink = audio.sink(16000, "", True) 89 | self.blocks_short_to_float = blocks.short_to_float(1, 32768) 90 | self.connect((self.blocks_adder, 0), (self.blocks_short_to_float, 0), (self.audio_sink, 0)) 91 | 92 | if not options.multiplex and not options.local: 93 | self.connect((self.blocks_adder, 0), (blocks.null_sink(gr.sizeof_short*1),0)) 94 | 95 | def setup_upstream_pipe(self, key, description, config): 96 | fname = "pipe-%s.raw" % key 97 | 98 | # create a pipe 99 | try: 100 | os.unlink(fname) 101 | except OSError: 102 | pass 103 | 104 | os.mkfifo(fname) 105 | 106 | samplerate = 16 107 | bitrate = 16 108 | bitwidth = 16 109 | cmd = ['lame', 110 | '--bitwidth', str(bitwidth), 111 | '-b', str(bitrate), 112 | '-m', 'm', # mode mono 113 | '-r', # raw samples 114 | '-s', str(samplerate), # sample rate 115 | '--signed', '--little-endian', 116 | '--flush', # flush as soon as possible 117 | '--silent', # less verbose 118 | '--scale', '1.0', 119 | fname, '-'] 120 | 121 | # maximum bufsize - lame is configured to flush quicker, anyway 122 | bufsize = 2048 123 | pipe = subprocess.Popen(cmd, bufsize=bufsize, stdout=subprocess.PIPE).stdout 124 | # make pipe non-blocking 125 | fl = fcntl.fcntl(pipe, fcntl.F_GETFL) 126 | fcntl.fcntl(pipe, fcntl.F_SETFL, fl | os.O_NONBLOCK) 127 | 128 | # set up a thread to read from the pipe 129 | thread = threading.Thread(target=self.upstream_thread, 130 | args=(key, description, pipe, samplerate, bitrate, config)) 131 | thread.daemon = True 132 | thread.start() 133 | 134 | return fname 135 | 136 | def upstream_thread(self, key, description, pipe, samplerate, bitrate, config): 137 | """ 138 | Read mpeg data stream from pipe, upload to server with low latency 139 | """ 140 | global error_count 141 | # TODO: error handling, never fail - retry and rewire 142 | poll = select.poll() 143 | poll.register(pipe, select.POLLIN|select.POLLERR) 144 | 145 | ice = None 146 | last_connect = 0 147 | 148 | while True: 149 | r = poll.poll(1000) 150 | if len(r) < 1: 151 | logging.info("%s ... poll timeout", key) 152 | error_count+=1 153 | continue 154 | 155 | fd, ev = r[0] 156 | d = pipe.read(4096) 157 | #print "read %d" % len(d) 158 | 159 | if ice == None and time.time() - last_connect > 4: 160 | # Connect to icecast 161 | logging.info("%s ... connecting ...", key) 162 | last_connect = time.time() 163 | try: 164 | ice = self.icecast_connect(key, description, samplerate, bitrate, config) 165 | logging.info("%s ... connected!", key) 166 | except Exception as e: 167 | logging.info("... connect failed: %r", e) 168 | ice = None 169 | 170 | if ice != None: 171 | try: 172 | ice.send(d) 173 | except Exception: 174 | try: 175 | ice.close() 176 | logging.info("%s ... disconnected!", key) 177 | except Exception: 178 | pass 179 | ice = None 180 | 181 | 182 | def icecast_connect(self, key, description, samplerate, bitrate, config): 183 | """ 184 | Connect to icecast 185 | """ 186 | #key = key + "-test" 187 | mountpoint = "/%s.mp3" % key 188 | 189 | def request_format(request, line_separator="\n"): 190 | return line_separator.join(["%s: %s" % (key, str(val)) for (key, val) in request.items()]) 191 | 192 | host = config.ice_host() 193 | port = config.ice_port() 194 | auth = config.ice_auth().encode('ASCII') 195 | 196 | logging.info("%s connecting %s:%d", key, host, port) 197 | 198 | s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 199 | s.connect((host, port)) 200 | ice_header="SOURCE %s ICE/1.0\n%s\n%s\n\n" % ( 201 | mountpoint, 202 | request_format({ 203 | 'content-type': 'audio/mpeg', 204 | 'Authorization': 'Basic ' + b64encode(b'source:' + auth).decode('ASCII'), 205 | 'User-Agent': "multirx" 206 | }), 207 | request_format({ 208 | 'ice-name': key, 209 | 'ice-genre': 'Radio', 210 | 'ice-bitrate': bitrate, 211 | 'ice-private': 0, 212 | 'ice-public': 0, 213 | 'ice-description': description, 214 | 'ice-audio-info': "ice-samplerate=%d;ice-bitrate=%d;ice-channels=1" % 215 | (samplerate, bitrate), 216 | 'ice-url': "http://%s:%d/%s.mp3" % (host, port, key) 217 | }) 218 | ) 219 | s.sendall(ice_header.encode('ASCII')) 220 | response = s.recv(4096) 221 | if len(response) == 0: 222 | raise "No response from icecast server" 223 | 224 | if response.find(b'HTTP/1.0 200 OK') == -1: 225 | raise b'Server response: %s' % response 226 | 227 | return s 228 | 229 | if __name__ == '__main__': 230 | parser=OptionParser(option_class=eng_option) 231 | parser.add_option("-v", "--verbose", action="store_true", help="verbose") 232 | parser.add_option("-l", "--local", action="store_true", help="local monitor") 233 | parser.add_option("-m", "--multiplex", action="store_true", help="multiplex stream") 234 | (options, args) = parser.parse_args() 235 | 236 | if len(args) != 1: 237 | parser.print_help() 238 | sys.exit(1) 239 | 240 | logging.basicConfig(format='%(asctime)s %(message)s', \ 241 | datefmt='%m/%d/%Y %H:%M:%S', level=logging.DEBUG) 242 | error_count = 0 243 | tb = multirx_example(args[0], options) 244 | tb.start() 245 | 246 | timeout = 5 247 | print("Press Enter to quit: ") 248 | rlist, _, _ = select.select([sys.stdin], [], [], timeout) 249 | while not rlist: 250 | rlist, _, _ = select.select([sys.stdin], [], [], timeout) 251 | if error_count > 20: 252 | logging.info("Error count exceeded, restarting receivers.") 253 | break 254 | 255 | print("Exit Requested.") 256 | tb.stop() 257 | tb.wait() 258 | -------------------------------------------------------------------------------- /receiver2.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 00000200 4 | 48 5 | 70 6 | /var/www/html/wav 7 | example.com 8 | 8000 9 | password 10 | 11 | 12 | XXXXXX 13 | XXXXX 14 | 155.205 15 | 0 16 | /home/user/sdr/multirx2/Recorder-post.bash 17 | 25 18 | 19 | 20 | Fire Response 21 | fireresp 22 | 155.76 23 | 0 24 | /home/user/sdr/multirx2/Recorder-post.bash 25 | 25 26 | 27 | 35 | 36 | Police Central 37 | pdcent 38 | 155.82 39 | 0 40 | /home/user/sdr/multirx2/Recorder-post.bash 41 | 25 42 | 43 | 53 | 61 | 62 | -------------------------------------------------------------------------------- /run.bash: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | cd /home/roschews/sdr/multirx2 3 | while true 4 | do 5 | ./multirx_nogui.py receiver2.xml 6 | sleep 60 7 | mv wav/*.wav wav/partial 8 | done 9 | -------------------------------------------------------------------------------- /ttd-post-example.bash: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | export TZ=EST5EDT 3 | 4 | PAGEDIR=/var/www/html/wav/pager/ 5 | 6 | sleep 2 7 | /home/user/wave2ttd.py $1 | while read A 8 | do 9 | mkdir -p ${PAGEDIR}${A} 10 | NEWFILE=${PAGEDIR}${A}/$(date +%Y-%m-%d_)$(basename $1 .wav).mp3 11 | /usr/bin/lame --silent $1 ${NEWFILE} 12 | echo "$(date) $A $NEWFILE" >> /home/user/sdr/multirx2/pages.log 13 | 14 | echo ${NEWFILE} >> /home/user/call_list 15 | tail -20 /home/user/call_list > /home/user/new_call_list 16 | rm /home/user/call_list 17 | mv /home/user/new_call_list /home/user/call_list 18 | 19 | # if [[ $A =~ .*FIRE.* ]]; then 20 | # /home/user/send-audio-email.py -f xyz@example.com -s "$A Alert" -r 9085551212@vzwpix.com ${NEWFILE} 21 | # fi 22 | if [[ $A =~ 21_RESCUE ]]; then 23 | /home/user/send-audio-email.py -f xyz@example.com -s "$A Alert" -r sammy@example.com ${NEWFILE} 24 | fi 25 | if [[ $A =~ 21_FIRE ]]; then 26 | /home/user/send-audio-email.py -f xyz@example.com -s "$A Alert" -r freddy@example.com ${NEWFILE} 27 | fi 28 | if [[ $A =~ 22_HAZMAT ]]; then 29 | /home/user/push_call.bash ${DIR}${FILE} 19085551212 30 | fi 31 | done 32 | 33 | rm $1 34 | --------------------------------------------------------------------------------