{"analysis":{"blocks":[[0.0,"mixed",1321.2],[20.0,"carrier",1306.5],[40.0,"carrier",1309.5],[60.0,"carrier",1315.3],[80.0,"carrier",1330.0],[100.0,"carrier",1318.2],[120.0,"carrier",1312.4],[140.0,"carrier",1294.8],[160.0,"carrier",1306.5],[180.0,"carrier",1309.5],[200.0,"carrier",1306.5],[220.0,"carrier",1306.5],[240.0,"carrier",1315.3],[260.0,"carrier",1303.6],[280.0,"carrier",1315.3],[300.0,"carrier",1300.7],[320.0,"carrier",1294.8],[340.0,"carrier",1306.5],[360.0,"mixed",1309.5],[380.0,"carrier",1309.5],[400.0,"carrier",1303.6],[420.0,"carrier",1318.2],[440.0,"carrier",1303.6],[460.0,"keyed-tone",1312.4]],"content":"carrier","dur_s":463.23,"keying_depth":0.48,"keying_hz":0.62,"mix":{"carrier":0.875,"keyed-tone":0.042,"mixed":0.083},"peak":0.5183,"rms":0.072118,"samplerate":11999,"summary":"carrier 88% · mixed 8% · keyed-tone 4% · tone 1308 Hz · keying 0.62 Hz depth 0.48","tone_hz":1308.0},"archived":false,"archived_why":null,"band":"LF","dur_s":463.23,"excerpt_s":null,"freq_khz":28.7,"heard_in":[],"id":"2026-10-02T0139Z-28.7-vlf-28700","licence":"CC BY 4.0","media":{"flac":{"bytes":8264098,"url":"/media/1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d.flac"},"m4a":{"bytes":2972971,"url":"/media/1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d.m4a"},"opus":{"bytes":2064953,"url":"/media/1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d.opus"}},"mode":"USB","notes":{"listening":{"marks":[],"note":"","stars":0,"tags":[]},"rig":null},"peaks":[93,91,95,96,97,98,98,98,98,98,98,97,98,96,97,97,98,97,96,97,96,97,96,97,96,98,97,97,96,97,96,97,98,97,97,97,98,97,97,96,97,97,98,98,97,98,96,97,98,97,98,98,97,98,96,97,97,97,97,97,98,97,98,97,97,96,97,98,98,96,97,97,97,98,98,99,98,99,97,97,96,97,97,97,97,98,98,98,98,97,97,96,98,98,99,97,98,96,96,97,97,98,98,96,96,97,96,97,95,98,97,97,97,96,97,96,96,95,97,96,98,97,97,96,96,96,97,98,98,98,98,98,96,97,97,99,97,97,96,96,97,97,96,96,97,97,98,96,98,96,97,97,98,98,97,97,97,97,97,98,96,98,97,98,97,98,97,98,98,98,99,97,97,96,97,96,96,97,98,98,98,97,96,98,97,97,97,97,97,98,97,98,96,96,96,97,97,98,98,97,97,96,97,96,98,97,98,97,96,97,97,97,97,97,97,98,96,98,97,98,96,97,97,97,97,96,97,96,97,96,98,97,98,97,97,96,96,98,97,98,97,98,97,98,97,98,97,96,97,97,97,97,98,97,96,96,98,96,98,97,98,96,97,97,96,97,97,98,97,98,97,97,96,97,96,98,97,96,97,97,97,97,98,97,98,97,98,97,97,97,97,97,98,99,98,98,98,98,97,98,98,99,98,98,98,97,97,97,98,98,99,99,99,96,97,97,98,99,98,98,97,99,98,98,97,98,98,99,97,98,97,97,97,97,98,98,98,97,98,97,97,97,99,97,99,98,97,98,98,99,98,98,98,97,96,97,96,98,97,97,98,97,97,96,98,97,98,98,98,98,99,98,98,98,98,99,98,98,98,99,98,98,97,99,98,99,98,99,98,98,98,98,98,99,99,98,99,99,98,98,98,97,96,97,98,99,99,99,97,98,97,99,98,98,97,98,97,97,98,97,99,98,98,97,99,98,98,97,97,98,97,99,97,98,98,96,97,98,97,98,97,97,97,97,97,97,98,97,98,97,97,97,98,98,97,98,97,98,98,98,97,97,96,98,98,98,97,97,97,97,97,98,99,98,100,98,98,97,97,97,98,98,97,97,98,98,98,98,96,99,96,98,97,97,97,97,98,97,98,97,98,97,97,97,97,96,97,97,97,98,97,98,97,97,96,98,97,97,97,97,97,96,97,96,97,97,97,97,98,97,97,97,97,98,98,98,97,97,97,97,96,97,97,97,97,97,96,97,97,97,97,96,97,95,96,96,97,96,96,97,97,97,96,97,96,97,96,97,97,97,97,98,98,97,96,97,97,97,98,96,98,96,96,95,97,97,97,97,95,96,96,96,96,97,96,97,96,97,96,96],"publish":"full","receiver":{"antenna":"Antenna Shared Apex SAL 30 array solution","grid":"JN06kj","loc":"Montmorillon 86500 FRANCE","opt_out":false},"recorder":"kiwirecorder.py (jks-prv/kiwiclient v1.11)","related":["2026-10-02T0844Z-28.7-vlf-28700","2026-10-02T2112Z-28.7-vlf-28700","2026-10-03T0322Z-28.7-vlf-28700","2026-10-02T0148Z-488.5-navtex-490","2026-10-02T0128Z-6200-quiet-6200","2026-10-02T0155Z-5334.1-wxfax-rbw-5336"],"rig_item":"2026-10-02T0139Z-28.7-vlf-28700","sha256":"1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d","snr_db":47,"source_dur_s":463.23,"spectrogram":"/spectrogram/1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d.png","station":{"kind":"","name":"VLF Israel 29.7 kHz submarine broadcast","slug":"vlf-28700"},"thumb":"/spectrogram/1da834026518ab37081867487dd173da4009affd3bc94504199c41f7450ccd1d-thumb.png","tier":"A","url":"/capture/2026-10-02T0139Z-28.7-vlf-28700/","utc":"2026-10-02T01:39:36Z"}