NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-10-01 17:53:21Z · 05:00 · received at Jędrzejów

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-10-01 17:53:21Z, 05:00: mixed 80% · voice 13% · carrier 7% · tone 867 Hz · keying 2.83 Hz depth 0.71
spectrogram 0–6.0 kHz · analysis blocks: voice carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.3 MB ⤓ Opus 1245 kB { }
What was heard
mixed 80% · voice 13% · carrier 7% · tone 867 Hz · keying 2.83 Hz depth 0.71 — dominant tone 867 Hz, keyed at 2.83 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 25 dB — thanks to the operator. Receivers
Provenance
sha256 d8a132acced9eb49f63707b81256dfaf87d0d3395c4dd5211c69aaaf1b3c8ab5
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-01T1753Z-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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