NIL HEARDRECEPTION LOG

RAF VOLMET

tier A · voice

5450 kHz USB · 2026-09-20 10:42:08Z · 10:00 · received at South West England, UK

Spectrogram of RAF VOLMET, 5450 kHz USB, 2026-09-20 10:42:08Z, 10:00: voice 40% · keyed-tone 23% · mixed 20% · carrier 17% · tone 371 Hz · keying 0.70 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 9.7 MB ⤓ Opus 2635 kB { }
What was heard
voice 40% · keyed-tone 23% · mixed 20% · carrier 17% · tone 371 Hz · keying 0.70 Hz depth 0.98 — dominant tone 371 Hz, keyed at 0.7 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 31 dB — thanks to the operator. Receivers
Provenance
sha256 6cf17eb585d57108584d7b7257d2f8aa9d1caa94254b7d0fc825dd66708308b6
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1042Z-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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