{"analysis":{"blocks":[[0.0,"mixed",503.9],[20.0,"mixed",503.9],[40.0,"mixed",503.9],[60.0,"morse",503.9],[80.0,"keyed-tone",503.9],[100.0,"keyed-tone",503.9],[120.0,"keyed-tone",503.9],[140.0,"mixed",503.9],[160.0,"data",1590.7],[180.0,"data",1605.3],[200.0,"data",1605.3],[220.0,"data",1590.7],[240.0,"data",1605.3],[260.0,"mixed",1590.7],[280.0,"data",1605.3],[300.0,"data",1605.3],[320.0,"data",1590.7],[340.0,"data",1605.3],[360.0,"morse",1605.3],[380.0,"data",1590.7],[400.0,"carrier",1605.3],[420.0,"mixed",503.9],[440.0,"data",1605.3],[460.0,"mixed",1605.3],[480.0,"mixed",1406.1],[500.0,"data",1605.3],[520.0,"data",1590.7],[540.0,"data",1605.3],[560.0,"data",1590.7],[580.0,"data",1605.3]],"content":"data","dur_s":600.28,"keying_depth":0.76,"keying_hz":2.25,"mix":{"carrier":0.033,"data":0.533,"keyed-tone":0.1,"mixed":0.267,"morse":0.067},"peak":0.4772,"rms":0.116933,"samplerate":11999,"summary":"data 53% · mixed 27% · keyed-tone 10% · morse 7% · carrier 3% · tone 504 Hz · keying 2.25 Hz depth 0.76","tone_hz":503.9},"archived":false,"archived_why":null,"band":"MF","dur_s":600.28,"excerpt_s":null,"freq_khz":488.5,"heard_in":[],"id":"2026-09-19T2147Z-488.5-navtex-490","licence":"CC BY 4.0","media":{"flac":{"bytes":11289678,"url":"/media/c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905.flac"},"m4a":{"bytes":3643268,"url":"/media/c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905.m4a"},"opus":{"bytes":2531706,"url":"/media/c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905.opus"}},"mode":"USB","notes":{"listening":{"marks":[],"note":"","stars":0,"tags":[]},"rig":null},"peaks":[95,95,93,94,94,94,94,94,94,94,93,94,94,94,94,94,93,93,94,92,92,94,94,95,94,93,93,93,93,93,94,94,93,94,93,93,94,94,94,94,94,94,94,94,93,91,91,93,94,94,93,94,94,94,94,94,94,93,93,92,90,93,93,93,94,95,95,95,95,94,95,94,95,94,95,94,93,93,89,91,94,94,94,95,95,94,94,93,94,94,94,94,94,94,93,93,94,94,94,94,94,94,93,93,94,93,94,94,94,93,94,93,93,93,94,95,93,93,94,94,95,94,94,94,94,93,94,94,95,94,95,96,97,97,96,97,96,97,97,97,94,95,97,97,96,96,97,97,93,96,97,97,96,96,96,96,96,97,96,97,97,97,98,97,97,98,96,97,98,98,98,98,98,98,98,97,98,97,98,95,96,97,98,98,98,98,97,97,97,97,98,98,98,99,98,98,99,99,99,98,98,99,99,99,98,98,98,98,98,98,98,97,96,96,98,98,98,97,96,95,97,98,98,98,97,96,97,98,98,97,97,97,97,96,95,95,96,96,96,97,96,96,95,95,96,96,95,96,96,96,96,96,96,96,95,95,96,96,95,96,96,95,95,95,95,95,95,95,96,96,95,95,95,95,96,97,96,96,97,97,97,98,98,98,92,96,98,98,98,98,97,98,98,99,98,98,98,98,98,98,95,97,97,97,97,97,97,97,97,98,97,98,99,99,99,99,99,99,99,99,99,99,99,99,98,99,98,97,98,99,99,98,98,98,98,98,97,97,96,96,97,97,97,97,96,97,95,96,96,95,90,93,95,96,95,96,95,94,93,95,92,94,96,96,93,95,96,96,97,96,96,97,97,97,97,97,96,97,98,97,97,98,99,98,99,99,98,99,99,99,99,99,99,99,99,99,98,98,98,97,98,97,96,90,95,95,96,94,90,93,94,92,94,94,94,94,95,93,94,93,93,92,94,95,94,94,95,95,96,96,94,94,93,95,96,96,96,97,97,97,96,97,96,95,97,96,97,96,97,97,96,96,97,96,95,96,97,97,96,95,96,96,96,96,96,96,96,96,96,95,95,95,95,95,95,94,93,93,94,92,93,94,94,95,94,94,94,95,95,94,95,94,95,96,96,94,96,96,96,97,98,98,98,98,98,98,99,98,98,97,98,98,99,99,100,99,99,99,95,95,98,99,99,99,99,99,99,99,99,99,98,96,97,98,98,97,97,97,97,98,98,97,98,99,95,96,97,98,98,96,97,98,99,98,99,99,98,98,98,99,99,99,99,99,99,99,99,99,98,98,99,98,97,97,99,99,98,99,99,99,99,99,98,95,97,98,98,98,99,98,99,99,98,99,99,98,98,98,96,98],"publish":"full","receiver":{"antenna":"vertical","grid":"JN39GG","loc":"Brettnach F57320","opt_out":false},"recorder":"kiwirecorder.py (jks-prv/kiwiclient v1.11)","related":["2026-09-19T2219Z-516.5-navtex-518","2026-09-19T2017Z-516.5-navtex-518","2026-09-20T0027Z-516.5-navtex-518","2026-09-19T2137Z-6250-xsl-6250","2026-09-19T2158Z-10000-wwv-10000-na","2026-09-19T2126Z-76.5-dcf77-77.5"],"rig_item":"2026-09-19T2147Z-488.5-navtex-490","sha256":"c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905","snr_db":44,"source_dur_s":600.28,"spectrogram":"/spectrogram/c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905.png","station":{"kind":"navigation","name":"NAVTEX","slug":"navtex"},"thumb":"/spectrogram/c4d223c31fcb7b57c793967acdc248e73eb036ff4b119ff2fb0a77130cdb2905-thumb.png","tier":"A","url":"/capture/2026-09-19T2147Z-488.5-navtex-490/","utc":"2026-09-19T21:47:53Z"}