NIL HEARDRECEPTION LOG

RAF VOLMET

tier A · voice

5450 kHz USB · 2026-09-24 13:13:56Z · 03:19 · received at South West England, UK

Spectrogram of RAF VOLMET, 5450 kHz USB, 2026-09-24 13:13:56Z, 03:19: voice 40% · carrier 30% · mixed 20% · keyed-tone 10% · tone 371 Hz · keying 0.20 Hz depth 0.98
spectrogram 0–6.0 kHz · analysis blocks: voice keyed-tone carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.2 MB ⤓ Opus 881 kB { }
What was heard
voice 40% · carrier 30% · mixed 20% · keyed-tone 10% · tone 371 Hz · keying 0.20 Hz depth 0.98 — dominant tone 371 Hz, keyed at 0.2 Hz (depth 0.98). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, South West England, UK (IO80qr) · Switched · reported SNR 30 dB — thanks to the operator. Receivers
Provenance
sha256 a0ae61c0f772d1bcc728c4c4e5e60fdc0d936dedc7342328aeaca147af3068cb
source 03:19 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T1313Z-5450-volmet-5450
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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