NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-09-25 19:53:16Z · 05:00 · received at Jędrzejów

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-25 19:53:16Z, 05:00: mixed 40% · voice 40% · data 13% · carrier 7% · tone 463 Hz · keying 11.36 Hz depth 0.75
spectrogram 0–6.0 kHz · analysis blocks: voice data carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.8 MB ⤓ Opus 1809 kB { }
What was heard
mixed 40% · voice 40% · data 13% · carrier 7% · tone 463 Hz · keying 11.36 Hz depth 0.75 — dominant tone 463 Hz, keyed at 11.36 Hz (depth 0.75). 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 28 dB — thanks to the operator. Receivers
Provenance
sha256 2140405def0374a3834d82984289c8ac5de01516a32eec5f17c9223f1d1b8fd9
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T1953Z-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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