NIL HEARDRECEPTION LOG

SVO Olimpia Radio (Greece) CW marker

tier A · keyed-tone

8423.2 kHz USB · 2026-09-26 05:51:09Z · 10:00 · received at Berndorf / Hasenstall Ranch, Kelemen Dipole, Lower Austria

Spectrogram of SVO Olimpia Radio (Greece) CW marker, 8423.2 kHz USB, 2026-09-26 05:51:09Z, 10:00: keyed-tone 93% · carrier 7% · tone 973 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 9.5 MB ⤓ Opus 3376 kB { }
What was heard
keyed-tone 93% · carrier 7% · tone 973 Hz · keying 0.30 Hz depth 0.99 — dominant tone 973 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, Berndorf / Hasenstall Ranch, Kelemen Dipole, Lower Austria (JN87BW) · Kelemen 2x13mtrs dipole · reported SNR 29 dB — thanks to the operator. Receivers
Provenance
sha256 9e7f6ba54e8b726542ca6fdc71901a220617bc00e0aea9d6b93394daa12f9f28
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T0551Z-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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