NIL HEARDRECEPTION LOG

The Pip

tier B · keyed-tone

3756 kHz USB · 2026-10-02 19:36:59Z · 07:21 · received at Hamburg, Drage, 🇩🇪 Germany 🇩🇪

Spectrogram of The Pip, 3756 kHz USB, 2026-10-02 19:36:59Z, 07:21: keyed-tone 52% · mixed 39% · carrier 9% · tone 501 Hz · keying 0.75 Hz depth 0.95
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 7.6 MB ⤓ Opus 1910 kB { }
What was heard
keyed-tone 52% · mixed 39% · carrier 9% · tone 501 Hz · keying 0.75 Hz depth 0.95 — dominant tone 501 Hz, keyed at 0.75 Hz (depth 0.95). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Hamburg, Drage, 🇩🇪 Germany 🇩🇪 (JO53dk) · VLF broadband vertical V1.2 08/26 · reported SNR 42 dB — thanks to the operator. Receivers
Provenance
sha256 42cc5a17d4f94ff43b9857358f3c5f0555bb20f3543342f16ec88db1a9e3f547
source 07:21 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T1936Z-3756-pip-3756
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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