NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-09-23 22:54:00Z · 05:00 · received at Poland, Warsaw

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-23 22:54:00Z, 05:00: mixed 87% · voice 13% · keying 1.73 Hz depth 0.73
spectrogram 0–6.0 kHz · analysis blocks: voice mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.3 MB ⤓ Opus 1316 kB { }
What was heard
mixed 87% · voice 13% · keying 1.73 Hz depth 0.73, keyed at 1.73 Hz (depth 0.73). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Poland, Warsaw · Test · reported SNR 26 dB — thanks to the operator. Receivers
Provenance
sha256 cfacdf2ee8ae5faa90e7373a5266f512c34044194e94e7f07299a1e7caab8986
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T2254Z-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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