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August 26, 2026 21:53
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RTLSDR-Airband configs for Yakushima?
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| # RTLSDR-Airband configuration for the Yakushima Town 367.450 MHz and | |
| # 367.475 MHz channels listed in data/soumu_frequencies.csv. | |
| # | |
| # The receiver stays tuned continuously in multichannel mode. The tuner center | |
| # is offset above both channels to keep them away from the RTL-SDR DC spike at | |
| # the center of the sampled spectrum. | |
| # | |
| # The RTLSDR-Airband binary must be built with NFM support (-DNFM=ON). Each | |
| # squelch-open transmission is recorded natively as 16 ksample/s CF32 I/Q plus | |
| # an MP3 safety copy. Use scripts/cf32_to_wav.py for offline WAV conversion. | |
| localtime = true; | |
| devices: | |
| ( | |
| { | |
| type = "rtlsdr"; | |
| index = 0; | |
| # Starting values: tune gain for the antenna/site and set correction to the | |
| # measured oscillator error in ppm. A stable device serial is preferable to | |
| # index once the target hardware is known. | |
| gain = 28.0; | |
| correction = 0; | |
| mode = "multichannel"; | |
| centerfreq = "367.550M"; | |
| channels: | |
| ( | |
| { | |
| freq = "367.450M"; | |
| label = "Yakushima 367.450 MHz"; | |
| modulation = "nfm"; | |
| bandwidth = 12500; | |
| # Automatic squelch is used until receiver-specific signal/noise levels | |
| # have been observed in foreground mode. | |
| outputs: | |
| ( | |
| { | |
| type = "rawfile"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_367_450"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| }, | |
| { | |
| # Native MP3 provides an immediately playable capture check. | |
| type = "file"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_367_450"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| } | |
| ); | |
| }, | |
| { | |
| freq = "367.475M"; | |
| label = "Yakushima 367.475 MHz"; | |
| modulation = "nfm"; | |
| bandwidth = 12500; | |
| # This channel is demodulated simultaneously with 367.450 MHz and has | |
| # an independent automatic squelch and recording stream. | |
| outputs: | |
| ( | |
| { | |
| type = "rawfile"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_367_475"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| }, | |
| { | |
| # Native MP3 provides an immediately playable capture check. | |
| type = "file"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_367_475"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| } | |
| ); | |
| } | |
| ); | |
| } | |
| ); |
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| # RTLSDR-Airband configuration for the Yakushima Town 385 MHz channels listed | |
| # in data/soumu_frequencies.csv. | |
| # | |
| # The receiver stays tuned continuously in multichannel mode. The 385.550 MHz | |
| # tuner center keeps all three channels away from the RTL-SDR DC spike at the | |
| # center of the sampled spectrum. | |
| # | |
| # The RTLSDR-Airband binary must be built with NFM support (-DNFM=ON). Each | |
| # squelch-open transmission is recorded natively as 16 ksample/s CF32 I/Q plus | |
| # an MP3 safety copy. Use scripts/cf32_to_wav.py for offline WAV conversion. | |
| localtime = true; | |
| devices: | |
| ( | |
| { | |
| type = "rtlsdr"; | |
| index = 0; | |
| # Starting values: tune gain for the antenna/site and set correction to the | |
| # measured oscillator error in ppm. A stable device serial is preferable to | |
| # index once the target hardware is known. | |
| gain = 28.0; | |
| correction = 0; | |
| mode = "multichannel"; | |
| centerfreq = "385.550M"; | |
| channels: | |
| ( | |
| { | |
| freq = "385.450M"; | |
| label = "Yakushima 385.450 MHz"; | |
| modulation = "nfm"; | |
| bandwidth = 12500; | |
| outputs: | |
| ( | |
| { | |
| type = "rawfile"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| }, | |
| { | |
| # Native MP3 provides an immediately playable capture check. | |
| type = "file"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| } | |
| ); | |
| }, | |
| { | |
| freq = "385.475M"; | |
| label = "Yakushima 385.475 MHz"; | |
| modulation = "nfm"; | |
| bandwidth = 12500; | |
| outputs: | |
| ( | |
| { | |
| type = "rawfile"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| }, | |
| { | |
| # Native MP3 provides an immediately playable capture check. | |
| type = "file"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| } | |
| ); | |
| }, | |
| { | |
| freq = "385.600M"; | |
| label = "Yakushima 385.600 MHz"; | |
| modulation = "nfm"; | |
| bandwidth = 12500; | |
| outputs: | |
| ( | |
| { | |
| type = "rawfile"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| }, | |
| { | |
| # Native MP3 provides an immediately playable capture check. | |
| type = "file"; | |
| directory = "PATH TO RECORDING DIRECTORY"; | |
| filename_template = "yakushima_bousai_385"; | |
| continuous = false; | |
| split_on_transmission = true; | |
| include_freq = true; | |
| append = true; | |
| dated_subdirectories = true; | |
| } | |
| ); | |
| } | |
| ); | |
| } | |
| ); |
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