NIL HEARDRECEPTION LOG

4XZ Israeli Navy Haifa, continuous CW marker

tier B · keyed-tone

10155.2 kHz USB · 2026-09-23 14:39:07Z · 10:00 · received at Kuwait City, Kuwait

Spectrogram of 4XZ Israeli Navy Haifa, continuous CW marker, 10155.2 kHz USB, 2026-09-23 14:39:07Z, 10:00: keyed-tone 80% · data 20% · tone 1690 Hz · keying 20.82 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.3 MB ⤓ Opus 2439 kB { }
What was heard
keyed-tone 80% · data 20% · tone 1690 Hz · keying 20.82 Hz depth 0.89 — dominant tone 1690 Hz, keyed at 20.82 Hz (depth 0.89). 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 25 dB — thanks to the operator. Receivers
Provenance
sha256 e16e58d179b011a24677898b1f3429aefa56fab6e7773a320a7fede6c021c07f
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T1439Z-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.
Related