NIL HEARDRECEPTION LOG

RAF VOLMET

tier A · voice

5450 kHz USB · 2026-09-22 09:00:22Z · 10:00 · received at Brettnach F57320

Spectrogram of RAF VOLMET, 5450 kHz USB, 2026-09-22 09:00:22Z, 10:00: voice 50% · carrier 23% · keyed-tone 17% · mixed 10% · tone 369 Hz · keying 0.75 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 9.8 MB ⤓ Opus 2608 kB { }
What was heard
voice 50% · carrier 23% · keyed-tone 17% · mixed 10% · tone 369 Hz · keying 0.75 Hz depth 0.94 — dominant tone 369 Hz, keyed at 0.75 Hz (depth 0.94). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 32 dB — thanks to the operator. Receivers
Provenance
sha256 db848eba1fbaa46436cb4c6f2bfa8a75b4fc0210f077d68a2bcfaf1ce6546e86
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0900Z-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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