NIL HEARDRECEPTION LOG

DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-10-05 13:51:37Z · 10:00 · received at Montmorillon 86500 FRANCE

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-10-05 13:51:37Z, 10:00: data 97% · morse 3% · tone 1333 Hz · keying 23.32 Hz depth 0.87
spectrogram 0–6.0 kHz · analysis blocks: morse data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.8 MB ⤓ Opus 2569 kB { }
What was heard
data 97% · morse 3% · tone 1333 Hz · keying 23.32 Hz depth 0.87 — dominant tone 1333 Hz, keyed at 23.32 Hz (depth 0.87). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Montmorillon 86500 FRANCE (JN06kj) · Antenna Shared Apex SAL 30 array solution · reported SNR 32 dB — thanks to the operator. Receivers
Provenance
sha256 69724845eb75dbd0a27eb836f6b1585807c742dd23603cbde5ef924981edc38d
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-05T1351Z-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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