DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-09-18 21:13:30Z · 04:00 · received at TREMOLAT (24), FRANCE

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-09-18 21:13:30Z, 04:00: data 100% — spectrogram 0–6.0 kHz · analysis blocks: data

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.3 MB ⤓ Opus 995 kB { }

What was heard

data 100%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, TREMOLAT (24), FRANCE (JN04ku) · Vertical pylon isolated 11 meters (ou Mini-Whip dual FET) · reported SNR 43 dB — thanks to the operator. Receivers

Provenance

sha256 43eaf239eb9bb26372dd604eb7b92545259289f6fe59979614f851947e9bd099
source 04:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2113Z-7644.5-rtty-7646

Heard in the record

— linked once the record exists.

Notes

rig: DDH7 7646 kHz F1B 50 Bd +/-225 Hz, 00-24 UTC continuous (DWD RTTY Program 1, Sept 2023 schedule). Dial 7644.5 USB -> mark/space ~1275/1725 Hz. https://www.dwd.de/EN/specialusers/shipping/broadcast_en/broadcast_rtty_1_092023.pdf

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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