DWD Hamburg RTTY weather DDH7

tier A · data

7644.5 kHz USB · 2026-09-19 23:10:00Z · 10:00 · received at Brettnach F57320

Spectrogram of DWD Hamburg RTTY weather DDH7, 7644.5 kHz USB, 2026-09-19 23:10:00Z, 10:00: data 93% · carrier 3% · keyed-tone 3% · tone 1349 Hz · keying 0.20 Hz depth 0.91 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.6 MB ⤓ Opus 2495 kB { }

What was heard

data 93% · carrier 3% · keyed-tone 3% · tone 1349 Hz · keying 0.20 Hz depth 0.91 — dominant tone 1349 Hz, keyed at 0.2 Hz (depth 0.91). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 44 dB — thanks to the operator. Receivers

Provenance

sha256 c1d013583da788032e0071dc4586ff750dedec826d2758c4365c3ff793fb31f6
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-19T2310Z-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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