NIL HEARDRECEPTION LOG

DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-09-20 10:52:46Z · 04:23 · received at PRADIERS DEP 15 JN15LG, FRANCE

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-09-20 10:52:46Z, 04:23: data 93% · morse 7% · tone 1274 Hz · keying 0.20 Hz depth 0.98
spectrogram 0–6.0 kHz · analysis blocks: morse data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.6 MB ⤓ Opus 1111 kB { }
What was heard
data 93% · morse 7% · tone 1274 Hz · keying 0.20 Hz depth 0.98 — dominant tone 1274 Hz, keyed at 0.2 Hz (depth 0.98). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, PRADIERS DEP 15 JN15LG, FRANCE (JN15lg) · KELEMEN 80/40/20/15/10 · reported SNR 31 dB — thanks to the operator. Receivers
Provenance
sha256 c8bc3ba61dbceb2cfa00ecb3f1f67b2473b5e36b90ba39e4bf26670cd6fa467b
source 04:23 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1052Z-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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