NIL HEARDRECEPTION LOG

GYA Northwood radiofax, 4610 kHz (night)

tier A · mixed

4608.1 kHz USB · 2026-09-26 16:17:12Z · 10:00 · received at Assen | Netherlands

Spectrogram of GYA Northwood radiofax, 4610 kHz (night), 4608.1 kHz USB, 2026-09-26 16:17:12Z, 10:00: mixed 67% · keyed-tone 17% · morse 10% · data 3% · carrier 3% · tone 2300 Hz · keying 0.35 Hz depth 0.81
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.6 MB ⤓ Opus 2544 kB { }
What was heard
mixed 67% · keyed-tone 17% · morse 10% · data 3% · carrier 3% · tone 2300 Hz · keying 0.35 Hz depth 0.81 — dominant tone 2300 Hz, keyed at 0.35 Hz (depth 0.81). 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 35 dB — thanks to the operator. Receivers
Provenance
sha256 72964e0298e509de800b060e1f37ea4fb4a50a1a5286fd3810b806415d58abb9
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1617Z-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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