NIL HEARDRECEPTION LOG

Shortwave Radiogram (MFSK32/64) via WRMI

tier A · mixed

5050 kHz AM · 2026-09-21 00:27:46Z · 10:00 · received at Tellico Plains, TN USA

Spectrogram of Shortwave Radiogram (MFSK32/64) via WRMI, 5050 kHz AM, 2026-09-21 00:27:46Z, 10:00: mixed 67% · carrier 17% · noise 7% · keyed-tone 7% · data 3% · tone 117 Hz · keying 0.55 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier mixed noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.2 MB ⤓ Opus 2526 kB { }
What was heard
mixed 67% · carrier 17% · noise 7% · keyed-tone 7% · data 3% · tone 117 Hz · keying 0.55 Hz depth 0.96 — dominant tone 117 Hz, keyed at 0.55 Hz (depth 0.96). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Tellico Plains, TN USA (EM75ul) · end-fed 173' wire @ 50' · reported SNR 35 dB — thanks to the operator. Receivers
Provenance
sha256 7e4e309b9e59fc06bd99e87f9bd568eaa845d9a2b07f53200c7886eae8a14df2
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0027Z-5050-radiogram-5050
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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