NIL HEARDRECEPTION LOG

MSF Anthorn 60 kHz time code

tier A · keyed-tone

59 kHz USB · 2026-09-20 15:18:47Z · 03:23 · received at Heppen, Limburg, Belgium

Spectrogram of MSF Anthorn 60 kHz time code, 59 kHz USB, 2026-09-20 15:18:47Z, 03:23: keyed-tone 100% · tone 999 Hz · keying 1.00 Hz depth 0.82
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.2 MB ⤓ Opus 793 kB { }
What was heard
keyed-tone 100% · tone 999 Hz · keying 1.00 Hz depth 0.82 — dominant tone 999 Hz, keyed at 1.0 Hz (depth 0.82). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Heppen, Limburg, Belgium (JO21oc) · Longwire 54m top 70m above sealevel · reported SNR 31 dB — thanks to the operator. Receivers
Provenance
sha256 89dd12f6ffec08942bb6f5ad0abe0bb2682b55c0d97cd8c37a69554ae25339c2
source 03:23 WAV, 12000 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1518Z-59-msf-60
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.
Related