NIL HEARDRECEPTION LOG

SVO Olimpia Radio (Greece) CW marker

tier A · mixed

8423.2 kHz USB · 2026-09-21 10:30:11Z · 10:00 · received at Città di San Marino, Republic of San Marino

Spectrogram of SVO Olimpia Radio (Greece) CW marker, 8423.2 kHz USB, 2026-09-21 10:30:11Z, 10:00: mixed 80% · keyed-tone 20% · tone 864 Hz · keying 0.25 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.4 MB ⤓ Opus 3085 kB { }
What was heard
mixed 80% · keyed-tone 20% · tone 864 Hz · keying 0.25 Hz depth 0.89 — dominant tone 864 Hz, keyed at 0.25 Hz (depth 0.89). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Città di San Marino, Republic of San Marino (jn63fv) · Hfd loop · reported SNR 27 dB — thanks to the operator. Receivers
Provenance
sha256 5fdb754f551474a42f9374485f937cf240cf13044bc4230c746dc8a9078caf4d
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T1030Z-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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