NIL HEARDRECEPTION LOG

GYA Northwood radiofax, 4610 kHz (night)

tier A · mixed

4608.1 kHz USB · 2026-09-22 03:21:52Z · 02:21 · received at Assen | Netherlands

Spectrogram of GYA Northwood radiofax, 4610 kHz (night), 4608.1 kHz USB, 2026-09-22 03:21:52Z, 02:21: mixed 75% · keyed-tone 12% · carrier 12% · tone 1500 Hz · keying 0.20 Hz depth 0.99
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.5 MB ⤓ Opus 595 kB { }
What was heard
mixed 75% · keyed-tone 12% · carrier 12% · tone 1500 Hz · keying 0.20 Hz depth 0.99 — dominant tone 1500 Hz, keyed at 0.2 Hz (depth 0.99). 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 42 dB — thanks to the operator. Receivers
Provenance
sha256 694f3bf3d8f8d5ed0190bfda9464a708f26b6b02fd8221e251546e7bf2cba816
source 02:21 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0321Z-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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