NIL HEARDRECEPTION LOG

4XZ Israeli Navy Haifa, continuous CW marker

tier B · keyed-tone

10155.2 kHz USB · 2026-09-26 12:29:26Z · 10:01 · received at Kuwait City, Kuwait

Spectrogram of 4XZ Israeli Navy Haifa, continuous CW marker, 10155.2 kHz USB, 2026-09-26 12:29:26Z, 10:01: keyed-tone 53% · mixed 33% · data 13% · tone 1904 Hz · keying 20.82 Hz depth 0.87
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.1 MB ⤓ Opus 2464 kB { }
What was heard
keyed-tone 53% · mixed 33% · data 13% · tone 1904 Hz · keying 20.82 Hz depth 0.87 — dominant tone 1904 Hz, keyed at 20.82 Hz (depth 0.87). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Kuwait City, Kuwait (LL39) · HyEndFed · reported SNR 20 dB — thanks to the operator. Receivers
Provenance
sha256 09595e73d60e141e3f964f88c92dfd2e4b906ee17af8435ce78698d6b01e9e2b
source 10:01 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1229Z-10155.2-4xz-10156
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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