NIL HEARDRECEPTION LOG

Rostov VOLMET (Russian) night

tier A · mixed

6617 kHz USB · 2026-09-23 17:55:45Z · 05:00 · received at Poland, Warsaw

Spectrogram of Rostov VOLMET (Russian) night, 6617 kHz USB, 2026-09-23 17:55:45Z, 05:00: mixed 93% · keyed-tone 7% · tone 2001 Hz · keying 0.40 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.3 MB ⤓ Opus 1315 kB { }
What was heard
mixed 93% · keyed-tone 7% · tone 2001 Hz · keying 0.40 Hz depth 0.96 — dominant tone 2001 Hz, keyed at 0.4 Hz (depth 0.96). 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 29 dB — thanks to the operator. Receivers
Provenance
sha256 be2e1a3f9a90572ced92a3f6633a8676b3a97086740e308916e0c01a541555db
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T1755Z-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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