USCG NMN Chesapeake

tier A · mixed

8764 kHz USB · 2026-09-18 21:23:56Z · 05:00 · received at Shrewsbury, Vermont, USA

Spectrogram of USCG NMN Chesapeake, 8764 kHz USB, 2026-09-18 21:23:56Z, 05:00: mixed 100% — spectrogram 0–6.0 kHz · analysis blocks: mixed

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.3 MB ⤓ Opus 1262 kB { }

What was heard

mixed 100%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, Shrewsbury, Vermont, USA (FN33om) · 82m (270ft) center fed doublet @ 20m (65ft) MF through HF · reported SNR 23 dB — thanks to the operator. Receivers

Provenance

sha256 25903dbfc375d64e9ba6490f0024950314f658a0d3e72c9d76fb1d1ab4128756
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2123Z-8764-uscg-nmn-8764

Heard in the record

— linked once the record exists.

Notes

rig: USCG Communications Command (NMN) Chesapeake VA, scheduled HF voice offshore/high-seas forecast at 2130Z on 6501/8764/13089 USB (also 1115/1530/2315Z). Synthesized voice reading NWS offshore forecasts. Sources: weather.gov/marine/uscg_broadcasts, navcen.uscg.gov MSI broadcasts

Licence

CC BY 4.0 — credit NIL HEARD / Reception Log. The recording is ours; the transmission is somebody else's. Descriptions describe sound, never content — why.

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