NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · voice

6617 kHz USB · 2026-09-21 02:53:15Z · 04:02 · received at Jędrzejów

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-21 02:53:15Z, 04:02: voice 54% · mixed 38% · keyed-tone 8% · tone 469 Hz · keying 1.42 Hz depth 0.79
spectrogram 0–6.0 kHz · analysis blocks: voice keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.2 MB ⤓ Opus 1021 kB { }
What was heard
voice 54% · mixed 38% · keyed-tone 8% · tone 469 Hz · keying 1.42 Hz depth 0.79 — dominant tone 469 Hz, keyed at 1.42 Hz (depth 0.79). 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 3ac2a84016191fb7293d5c92b828c87a9a7ec052be7f793b0a6da87cd952bb2a
source 04:02 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0253Z-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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