Two voices, one provenance boundary
Revisioned, evidence-linked receive-only radio records. Preliminary means preliminary; unresolved does not mean anomalous.
A five-block receive-only source-origin campaign found an approximately-120 MHz family in all 15 traces, including all six terminated-input traces, requiring a narrow instrument/input-path caution rather than an environmental-emitter claim.
A bounded receive-only trial completed five sweeps on each of two receiver paths, recorded 20 shared broadcast-FM regions with frequency-compatible candidate assignments, and preserved its diagnostic and identity limits.
A bounded NanoVNA S21 characterization of the FMF-01 passive broadcast-FM filter, with stable controls, strong measured FM-band rejection and explicit discrete-marker limitations.
Two receive chains repeatedly captured an occupied region near 100.7 MHz without clipping and preserved it as integrity-bound evidence. The broadcaster is not identified.