NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-09-22 21:55:27Z · 05:00 · received at Płońsk | POLAND

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-22 21:55:27Z, 05:00: mixed 67% · voice 27% · carrier 7% · tone 2001 Hz · keying 2.77 Hz depth 0.73
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 1282 kB { }
What was heard
mixed 67% · voice 27% · carrier 7% · tone 2001 Hz · keying 2.77 Hz depth 0.73 — dominant tone 2001 Hz, keyed at 2.77 Hz (depth 0.73). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Płońsk | POLAND (KO02eo) · SDRPLONSK diy active 3/4\" copper pipe, 2.5 m diameter. 3m/AGL · reported SNR 35 dB — thanks to the operator. Receivers
Provenance
sha256 e7c0855c1daccdd73646e29cb4ecefbb763f7693a081336fbc76679cf14a0258
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T2155Z-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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