NIL HEARDRECEPTION LOG

Shannon VOLMET aviation weather

tier A · voice

8957 kHz USB · 2026-09-22 13:50:53Z · 06:20 · received at Heppen, Limburg, Belgium

Spectrogram of Shannon VOLMET aviation weather, 8957 kHz USB, 2026-09-22 13:50:53Z, 06:20: voice 63% · mixed 26% · carrier 10% · tone 476 Hz · keying 0.80 Hz depth 0.75
spectrogram 0–6.0 kHz · analysis blocks: voice carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.9 MB ⤓ Opus 1460 kB { }
What was heard
voice 63% · mixed 26% · carrier 10% · tone 476 Hz · keying 0.80 Hz depth 0.75 — dominant tone 476 Hz, keyed at 0.8 Hz (depth 0.75). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Heppen, Limburg, Belgium (JO21oc) · Longwire 54m top 70m above sealevel · reported SNR 30 dB — thanks to the operator. Receivers
Provenance
sha256 594d1b78c7ca3faddafff9e982ad11669636e064b0489b9ea7be96534ca1c506
source 06:20 WAV, 12000 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T1350Z-8957-volmet-8957
Heard in the record
— linked once the record exists.
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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