NIL HEARDRECEPTION LOG

DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-10-02 22:56:02Z · 08:16 · received at Montmorillon 86500 FRANCE

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-10-02 22:56:02Z, 08:16: data 92% · morse 8% · tone 1337 Hz · keying 12.04 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: morse data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 8.9 MB ⤓ Opus 2094 kB { }
What was heard
data 92% · morse 8% · tone 1337 Hz · keying 12.04 Hz depth 0.89 — dominant tone 1337 Hz, keyed at 12.04 Hz (depth 0.89). 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 45 dB — thanks to the operator. Receivers
Provenance
sha256 2e9a830dd99b2d982009c428614a8fe4da86082573493e50c8fe6a961932b6d6
source 08:16 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T2256Z-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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