Loggings > North American Shortwave Pirate
UNID 6925 USB 03:02z-03:17z 07-10-12
ChrisSmolinski:
Noted on the SDR recording as an AM transmission, first noted around 0250z but extremely weak, fading in and out, periods of no carrier at all. The signal picked up at about 0330z, although still fairly weak. Carrier off at just after 0337z.
I also noted stronger carriers on 6925 for short periods, such as 0352z-0353z. This was much stronger than the earlier transmission, and may have been someone else.
At 0434z I note the later transmission that Sealord heard as well. This certainly did not have a carrier.
I am not sure what to make of this. A few weeks ago, I posted about the odd transmissions I would note on 6925 almost every night on the SDR recordings. Always extremely weak, with the carrier often fading out completely at times. This was the first time I think I noticed the carrier actually being switched off, and not fading out. At the time, I eventually became convinced it was a spur or mixing product. I notice that it was back today, say around 0530z. Here is a recording when it faded in:
http://www.hfunderpants.com/mypics/UNID_6925_0530_07112012.mp3
I am pretty sure that I hear at least two stations in there, making me assume it is some sort of mixing product, or defect at a transmitter site. Or even a mixing product in my SDR, if no one else reports this. Much like Trenton Aviation appearing around 6950 on my older SDR-14.
I also think this is unrelated to the "sound effect" station(s) that we're also hearing. So IMHO we have several stations involved here, adding to the confusion.
Oh, and look at what I heard at 0634z, it sounds like an ID for a MW station, any ideas?
http://www.hfunderpants.com/mypics/UNID_6925_0634_07112012.mp3
And here's what certainly sounds like at least two stations mixing at 0651z:
http://www.hfunderpants.com/mypics/UNID_6925_0651_07112012.mp3
jFarley:
11 July 2012
2349 Nothing of consequence heard from this point on until 0321:53. Some pesc activity and IP sounders, otherwise dead here.
0321:53 The Spooky Sound came on abruptly.
0326:02 An AM carrier came on 6924.766 kHz.
0328:19 The last phrase of the Spooky Sound started here, and there was no audio on the AM that I could hear.
0332:00 1st audio on 6924.766 AM heard; this seemed to be open carrier for a time. This seemed to be a dance track with a big
thumpy bass. Towards the end of the song there were some electronic synth musical tones, maybe what Sealord heard?
0337:12 Last audio heard, and the AM went off.
The signal strength history looked like:
The Spooky Sound begins around 1040 seconds, and the AM came on around 790. Being convinced that Spooky was done, I re-tuned and went to SAM mode to look at the AM at 450. The AM went off at around 110. The first 2 peaks before the Spooky starts do not have any audio associated with them; they could have been tune-ups for the AM?
It seems pretty clear considering the 2 minute 17 second overlap of the Spooky Sound and this AM that they are not related. The AM very well could be someone doing a quick test. I am not drawing any other conclusions.
Audio: http://www.mediafire.com/download.php?v8n81m63sx7tt3m
Are we having fun yet?
BTW, Lex had a post related to this, with an audio link which is very interesting (thanks Lex!). It is here:
http://www.hfunderground.com/board/index.php/topic,7604.0.html
This is interesting because the QRM initally has an XM feedback quality, which changes (just before 2:00 into the file) to the Spooky Sound we've been hearing the past few nights. Around 8:45, the Spooky stops, only to reappear as the feedback sound at 11:00....
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