NIL HEARDRECEPTION LOG

DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-09-19 20:28:20Z · 03:50 · received at Assen | Netherlands

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-09-19 20:28:20Z, 03:50: data 92% · morse 8% · tone 1274 Hz · keying 23.32 Hz depth 0.90
spectrogram 0–6.0 kHz · analysis blocks: morse data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.1 MB ⤓ Opus 965 kB { }
What was heard
data 92% · morse 8% · tone 1274 Hz · keying 23.32 Hz depth 0.90 — dominant tone 1274 Hz, keyed at 23.32 Hz (depth 0.9). 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 43 dB — thanks to the operator. Receivers
Provenance
sha256 4e91cbbe2c19733c289fc57b1831c562fd6bea19a5869a63be00d6ac7301ab38
source 03:50 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-19T2028Z-7644.5-rtty-7646
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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