NIL HEARDRECEPTION LOG

SVJ4 Athens radiofax

tier A · mixed

4479.1 kHz USB · 2026-10-06 18:42:57Z · 10:00 · received at Sedlcany, Czech Republic

Spectrogram of SVJ4 Athens radiofax, 4479.1 kHz USB, 2026-10-06 18:42:57Z, 10:00: mixed 93% · voice 7% · keying 1.20 Hz depth 0.71
spectrogram 0–6.0 kHz · analysis blocks: voice mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.8 MB ⤓ Opus 2497 kB { }
What was heard
mixed 93% · voice 7% · keying 1.20 Hz depth 0.71, keyed at 1.2 Hz (depth 0.71). 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 36 dB — thanks to the operator. Receivers
Provenance
sha256 10dbe0ef759da4d6e3f7116a80cabcd4d295babff1fe28c433f031e859726e53
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T1842Z-4479.1-wxfax-svj4-4481
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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