Sunday, July 01, 2012

Another Signal Looking For Ident - Possibly CIS-12 (Fire)

Hi All,

Another post, this time for a signal which, having had a scan around the internet and good read up, I may have identified, but would welcome comments / confirmation.

The signal is another complex signal / what appears to he a 12 channel / multi-channel PSK system. This was received on the 27th June around 2040 UTC, on 11120KHz. An SDR-IQ receiver with SDR-Radio.com software was used. Below is the waterfall / sonograph trace together with an audio file.

With my limited analysis - I think this signal may be CIS-12 (Fire), apart from the obvious 12 channels it also  appears to have the signatory carrier / tone signal just on the upper side of the signal.

Any comments, suggestions or confirmation of signal / mode would be welcomed......

Many Thanks - Good DX !


                                                                 Audio Here


Tuesday, March 06, 2012

Two More UNID Signals

Been away for a while, but back on the bands again. A recent evening search found the following two signals which I'm trying to identify. Any clues or pointers to what these signals are would be gratefully received.

First signal I think is a scrambled voice link, but again any ident would be good.

Audio File

Second signal I think sounds like a composite PSK signal ?

Audio File

Many Thanks For Any Info - Good DX / Good Searching...

Monday, January 02, 2012

Welcome To 2182DX - A First Post !

Hi !  Happy New Year to all, thanks for viewing my blog.

Firstly an introduction to this page. This page is my outlet for publishing updates, reports and general findings and any questions I may have from my HF / Shortwave listening. This HF listening covers HF utility, shortwave broadcasting, amateur bands & civil/military air-band stations.

So for my first report, I have details two signals which were found a couple of months back, both of which I'm trying to identify. Both were relatively wideband, one was of short duration burst type, the other a continuous transmission.

Details as follows:

First Signal, received at 2016z 16-10-2011, centred on 9000KHz USB. Signal bandwidth around 15KHz, duration was around 15s, signal level +15dbm above noise floor. (Attached JPG & MP3)

   

Second signal, received at 1957z 16-10-2011, centred on 9070KHz. Signal bandwidth around
20KHz, continous transmission. Signal level around +35dbm above noise floor. (Attached JPG- MP3)



Any suggestions or clues as to who or what these signals may be would be greatly appreciated...!

Until next time - thanks for looking me up !
73 - Good DX & Be Safe...