HFU HF Underground

Loggings => Utility => Topic started by: 07code04stalker1776 on January 28, 2014, 1454 UTC

Title: Need Help Identifying
Post by: 07code04stalker1776 on January 28, 2014, 1454 UTC

Hey guys I need some help identifying a signal that i'm not familiar with. attached is the file. Its from 13983.7 Khz.

Title: Re: Need Help Identifying
Post by: 07code04stalker1776 on January 28, 2014, 1608 UTC

Also have another one too. https://soundcloud.com/07code04stalker1776/2014-01-11-4152-1khz (https://soundcloud.com/07code04stalker1776/2014-01-11-4152-1khz)
I thought this was QRM but it looked like it had some structure on the spectrum.

Title: Re: Need Help Identifying
Post by: tiNG on January 29, 2014, 1042 UTC

Hi!

The first one sounds familiar to some auto-alerting signal on digital channels within the maritime mobile bands (Sitor-channels). There are several digimodes that are able to wake up receiving stations with such a signal.

The second one sounds like some local QRM to me. Otherwise it could be a signal for some kind of measuring purposes. But I'm not sure about that.

Kind regards