NIL HEARDRECEPTION LOG

RAF VOLMET

tier A · mixed

5450 kHz USB · 2026-10-03 04:32:18Z · 03:47 · received at Fryslan, the Netherlands

Spectrogram of RAF VOLMET, 5450 kHz USB, 2026-10-03 04:32:18Z, 03:47: mixed 83% · keyed-tone 17% · tone 434 Hz · keying 0.72 Hz depth 0.93
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.9 MB ⤓ Opus 972 kB { }
What was heard
mixed 83% · keyed-tone 17% · tone 434 Hz · keying 0.72 Hz depth 0.93 — dominant tone 434 Hz, keyed at 0.72 Hz (depth 0.93). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Fryslan, the Netherlands (JO23XE) · Inverted-v dipool, 2x45 m · reported SNR 37 dB — thanks to the operator. Receivers
Provenance
sha256 c21d43b52616e7dcab8025056258498f3a23e05d2c453848db2d946915312559
source 03:47 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T0432Z-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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