NIL HEARDRECEPTION LOG

Shannon VOLMET aviation weather

tier A · voice

8957 kHz USB · 2026-09-24 13:02:49Z · 10:00 · received at Heppen, Limburg, Belgium

Spectrogram of Shannon VOLMET aviation weather, 8957 kHz USB, 2026-09-24 13:02:49Z, 10:00: voice 63% · mixed 30% · carrier 7% · tone 488 Hz · keying 0.55 Hz depth 0.78
spectrogram 0–6.0 kHz · analysis blocks: voice carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.4 MB ⤓ Opus 2308 kB { }
What was heard
voice 63% · mixed 30% · carrier 7% · tone 488 Hz · keying 0.55 Hz depth 0.78 — dominant tone 488 Hz, keyed at 0.55 Hz (depth 0.78). 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 31 dB — thanks to the operator. Receivers
Provenance
sha256 e1e4e8cb33124edde2a9e0a544abf72e37676e0526d814dfbb882c0cb9c82cdb
source 10:00 WAV, 12000 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T1302Z-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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