NIL HEARDRECEPTION LOG

GYA Northwood radiofax, 4610 kHz (night)

tier A · mixed

4608.1 kHz USB · 2026-09-24 22:50:31Z · 10:00 · received at Brettnach F57320

Spectrogram of GYA Northwood radiofax, 4610 kHz (night), 4608.1 kHz USB, 2026-09-24 22:50:31Z, 10:00: mixed 93% · data 3% · keyed-tone 3% · tone 1500 Hz · keying 4.02 Hz depth 0.93
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.5 MB ⤓ Opus 2577 kB { }
What was heard
mixed 93% · data 3% · keyed-tone 3% · tone 1500 Hz · keying 4.02 Hz depth 0.93 — dominant tone 1500 Hz, keyed at 4.02 Hz (depth 0.93). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 6f1564a98af56f447f84f520facc1cce56aed65189f12e65b2a2d3d4d41b4cc1
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T2250Z-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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