{"captures":["2026-09-26T0529Z-16251-xpb1-0530","2026-09-25T0529Z-16251-xpb1-0530","2026-09-21T0527Z-16251-xpb1-0530"],"freqs_khz":[16251.0],"kind":"","name":"XPB1 polytone ladder, 05:30 step","slug":"xpb1-0530","tier":"B"}