NIL HEARDRECEPTION LOG

SVO Olimpia Radio (Greece) CW marker

tier A · keyed-tone

8423.2 kHz USB · 2026-09-24 14:59:40Z · 06:35 · received at Alvito, Italy 0-30 MHz Frequencies

Spectrogram of SVO Olimpia Radio (Greece) CW marker, 8423.2 kHz USB, 2026-09-24 14:59:40Z, 06:35: keyed-tone 95% · carrier 5% · tone 855 Hz · keying 0.30 Hz depth 0.99
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 6.0 MB ⤓ Opus 1754 kB { }
What was heard
keyed-tone 95% · carrier 5% · tone 855 Hz · keying 0.30 Hz depth 0.99 — dominant tone 855 Hz, keyed at 0.3 Hz (depth 0.99). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Alvito, Italy 0-30 MHz Frequencies (JN61vq) · G5RV Full Size Dir. N/S · reported SNR 25 dB — thanks to the operator. Receivers
Provenance
sha256 5b8075dc6b797aed98c30caf2880775c55d4671e487e8e1e180cb16f7ff8c49d
source 06:35 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T1459Z-8423.2-cw-svo-8424
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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