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NIL HEARDRECEPTION LOG

XPB1 polytone ladder, 05:00 step

tier B · 18451 kHz · 6 captures · 30:02 received

Field notes from the target list

xpb1-0500: XPB1 polytone ladder, 05:00 step — XPB1 walks six frequencies downward on exact ten-minute steps: 18451 05:00, 18051 05:10, 17451 05:20, 16251 05:30, 15851 05:40, 14451 05:50 (168 logs, August 2026). That is a form, not a schedule — six captures in fifty minutes that belong together. Polytone: no voice, no groups to redact. Expect data/keyed-tone.

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