NIL HEARDRECEPTION LOG

Katok-65

tier B · mixed

3218.5 kHz USB · 2026-09-18 21:13:36Z · 04:00 · received at Sedlcany, Czech Republic

Spectrogram of Katok-65, 3218.5 kHz USB, 2026-09-18 21:13:36Z, 04:00: mixed 92% · keyed-tone 8% · tone 513 Hz · keying 0.20 Hz depth 0.94
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.1 MB ⤓ Opus 1119 kB { }
What was heard
mixed 92% · keyed-tone 8% · tone 513 Hz · keying 0.20 Hz depth 0.94 — dominant tone 513 Hz, keyed at 0.2 Hz (depth 0.94). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Sedlcany, Czech Republic (JN79GO) · LW 40m · reported SNR 38 dB — thanks to the operator. Receivers
Provenance
sha256 feb1d962253f7f0763bca3f250f6fcafd511ffea6f224044903843b3c9123ce1
source 04:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2113Z-3218.5-katok65-3218
Heard in the record
— linked once the record exists.
Notes

rig: Marker hunt 2026-09-18 ~21:13Z. priyom: active, night freq 3218.5 USB, 6th Army command net Western MD. Marker pattern undocumented; probing what idles on the channel. Source: https://priyom.org/military-stations/russia/katok-65

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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