NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-09-21 05:23:48Z · 03:30 · received at Jędrzejów

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-21 05:23:48Z, 03:30: mixed 91% · voice 9% · keying 3.12 Hz depth 0.71
spectrogram 0–6.0 kHz · analysis blocks: voice mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.8 MB ⤓ Opus 875 kB { }
What was heard
mixed 91% · voice 9% · keying 3.12 Hz depth 0.71, keyed at 3.12 Hz (depth 0.71). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Jędrzejów (KO00) · Delta SP7LA · reported SNR 24 dB — thanks to the operator. Receivers
Provenance
sha256 31cd727ae3c5aa77b77c9ca848dcba70e0930671f54282c2b26f5be66c22fe2d
source 03:30 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0523Z-6617-volmet-6617-rostov
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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