NIL HEARDRECEPTION LOG

4XZ Israeli Navy Haifa, continuous CW marker

tier B · data

10155.2 kHz USB · 2026-09-25 16:51:28Z · 10:00 · received at Riyadh, Saudi Arabia

Spectrogram of 4XZ Israeli Navy Haifa, continuous CW marker, 10155.2 kHz USB, 2026-09-25 16:51:28Z, 10:00: data 83% · keyed-tone 13% · mixed 3% · tone 1901 Hz · keying 20.82 Hz depth 0.85
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 11.0 MB ⤓ Opus 2419 kB { }
What was heard
data 83% · keyed-tone 13% · mixed 3% · tone 1901 Hz · keying 20.82 Hz depth 0.85 — dominant tone 1901 Hz, keyed at 20.82 Hz (depth 0.85). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Riyadh, Saudi Arabia (LL34) · W6LVP · reported SNR 27 dB — thanks to the operator. Receivers
Provenance
sha256 befeaf889813111b38ee80741bbe7edb8d64dadd9f3e2a028e68eeaaa27ba2bd
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T1651Z-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