Israeli Navy 6618 USB with MIL-STD-188-110 traffic 0200 UTC 01 DEC 2022

[~SIGINT~]

UNID 6618.0 kHz USB with MIL-STD-188-110 traffic 02:00 UTC 01 DEC 2022

I have been monitoring a UNID with MIL-STD-188-110 traffic for the past hour or so. The signal is good and readable. From what I can gather so far, it appears as the station has somewhat of a broadcast schedule / pattern to it.

010231Z DEC 2022 6618.0 kHz USB
02:31 UTC - UNID station with MIL-STD-188-110 traffic; no voice preamble or identification;
02:32 UTC - Paused for 1 minute;
02:33 UTC - Transmissions resumed.

Note: The same station was first heard at approx 02:00Z.

010300Z DEC 2022 6618.0 kHz USB
03:00 UTC - UNID station with MIL-STD-188-110 traffic; no voice preamble or identification;
03:02 UTC - Paused for 1 minute;
03:03 UTC - Transmissions resumed;
03:06 UTC - Nothing else heard.

010313Z DEC 2022 6618.0 kHz USB
03:13 UTC - UNID station with MIL-STD-188-110 traffic; no voice preamble or identification;
03:14 UTC - Nothing else heard.

010330Z DEC 2022 6618.0 kHz USB
03:30 UTC - UNID station with MIL-STD-188-110 traffic; no voice preamble or identification;
03:35 UTC - Nothing else heard.

010400Z DEC 2022 6618.0 kHz USB
04:00Z UNID station with MIL-STD-188-110 traffic; no voice preamble or identification;
04:03Z Nothing else heard.

Attachment is a sample audio file recorded on: 2022-12-01 02:33:14Z
UNID 2022-12-01 02:33:14Z 6618.000 kHz USB

[~SIGINT~]

Israeli Navy 6618.0 kHz USB with modified MIL-STD-188-110 hybrid modem traffic 04:30 UTC 02 DEC 2022

020430Z DEC 2022 6618.0 kHz USB
04:30 UTC - Israeli Navy station with modified MIL-STD-188-110 hybrid modem traffic; no voice preamble or identification;
04:31 UTC - Paused for 1 minute;
05:33 UTC - Transmissions resumed;
04:35 UTC - Nothing else heard.

020437Z DEC 2022 6618.0 kHz USB
04:37 UTC - Israeli Navy station with modified MIL-STD-188-110 hybrid modem traffic; no voice preamble or identification;
04:37 UTC - Nothing else heard.