NIL HEARDRECEPTION LOG

4XZ Israeli Navy Haifa, continuous CW marker

tier B · carrier

10155.2 kHz USB · 2026-10-06 12:38:57Z · 10:00 · received at Kuwait City, Kuwait

Spectrogram of 4XZ Israeli Navy Haifa, continuous CW marker, 10155.2 kHz USB, 2026-10-06 12:38:57Z, 10:00: carrier 63% · morse 33% · keyed-tone 3% · tone 803 Hz · keying 8.96 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.1 MB ⤓ Opus 2512 kB { }
What was heard
carrier 63% · morse 33% · keyed-tone 3% · tone 803 Hz · keying 8.96 Hz depth 0.96 — dominant tone 803 Hz, keyed at 8.96 Hz (depth 0.96). 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 21 dB — thanks to the operator. Receivers
Provenance
sha256 f15a4d26b4e225fb39a27ead2a0afcbdeb2019b0df18512dcb9a8bf235da9b29
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T1238Z-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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