NIL HEARDRECEPTION LOG

The Pip

tier B · keyed-tone

3756 kHz USB · 2026-09-21 00:19:49Z · 04:47 · received at Fryslan, the Netherlands

Spectrogram of The Pip, 3756 kHz USB, 2026-09-21 00:19:49Z, 04:47: keyed-tone 93% · carrier 7% · tone 407 Hz · keying 0.75 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.0 MB ⤓ Opus 1186 kB { }
What was heard
keyed-tone 93% · carrier 7% · tone 407 Hz · keying 0.75 Hz depth 0.96 — dominant tone 407 Hz, keyed at 0.75 Hz (depth 0.96). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Fryslan, the Netherlands (JO23XE) · Inverted-v dipool, 2x45 m · reported SNR 38 dB — thanks to the operator. Receivers
Provenance
sha256 2ba05de69e100666b2f62bf76c4fae5f01a1a2050d8a9229ff7c990d522eb0fb
source 04:47 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0019Z-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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