NIL HEARDRECEPTION LOG

RAF VOLMET

tier A · voice

5450 kHz USB · 2026-09-25 20:29:44Z · 02:32 · received at Assen | Netherlands

Spectrogram of RAF VOLMET, 5450 kHz USB, 2026-09-25 20:29:44Z, 02:32: voice 50% · keyed-tone 25% · mixed 12% · carrier 12% · tone 428 Hz · keying 0.90 Hz depth 0.94
spectrogram 0–6.0 kHz · analysis blocks: voice keyed-tone carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.5 MB ⤓ Opus 659 kB { }
What was heard
voice 50% · keyed-tone 25% · mixed 12% · carrier 12% · tone 428 Hz · keying 0.90 Hz depth 0.94 — dominant tone 428 Hz, keyed at 0.9 Hz (depth 0.94). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 07d5a8422cc3a7ba387718040bb025f6c714bfea005cc188354e14bf6fbdb29b
source 02:32 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T2029Z-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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