NIL HEARDRECEPTION LOG

GYA Northwood radiofax, 4610 kHz (night)

tier A · morse

4608.1 kHz USB · 2026-09-25 04:00:39Z · 03:34 · received at Assen | Netherlands

Spectrogram of GYA Northwood radiofax, 4610 kHz (night), 4608.1 kHz USB, 2026-09-25 04:00:39Z, 03:34: morse 82% · keyed-tone 18% · tone 2300 Hz · keying 4.00 Hz depth 0.87
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.9 MB ⤓ Opus 875 kB { }
What was heard
morse 82% · keyed-tone 18% · tone 2300 Hz · keying 4.00 Hz depth 0.87 — dominant tone 2300 Hz, keyed at 4.0 Hz (depth 0.87). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 40 dB — thanks to the operator. Receivers
Provenance
sha256 95cb34b0573a2503c778a8072b816b70964f9c5d9a8e8f8d7938c4a6e3f989bf
source 03:34 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T0400Z-4608.1-wxfax-gya-4610
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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