HFU HF Underground
Loggings => Other => Topic started by: ChrisSmolinski on March 10, 2013, 2106 UTC
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Any idea what this is?
(http://www.radiohobbyist.org/blog/mypics/UNID_43m_noise_03102013.jpg)
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There was some discussion on the Glenn Hauser's email list, that HAARP was active around the band last week. But after going back and looking at the messages---they credit HFUnderground, and it was several days ago.
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I definitely am hearing this and it's very loud and annoying all throughout the 6900 KHz range and quite possibly beyond. It sounds like helicopter rotors beating the air.
In fact, I was listening to Powerliner on 6955 KHz and this stuff showed up, killing my reception. It's about S8 on 6955 at 2208 UTC.
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Chris, how long does the noise last? There is a 400 kHz wide sounder that wacks that portion of the band from time to time that presents a pattern like that on the waterfall, but it is on for aobut 2 minutes and off for 15 or so.
T!
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This was on for much longer than 2 minutes at a time. Beerus may remember better than me, but I would say at least half an hour? Maybe longer?
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Seemed like it was on for at least 15 or 20 minutes.
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The Helicopter noted again tonight, but in reduced signal strength and much more intermittent. On for 30-90 seconds, then off for a bit, then back on, it seems. Then changing to much longer durations of on-air. There's no clear pattern. Much lower signal strength now (in darkness) against my reception the other day (much louder, daylight) suggests a possible east coast origin.
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Hearing what sounds like a helicopter (in AM) from 9301 to 9358 and is of decent strength. Mar 13, 2013 0342Z
Sangean ATS-909X with 25' wire
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Was reading an overnight digest (digest #5176 from Mar 13) from the dxld Yahoo! group and there was a message:
just noticed HAARP is active again on 8630 & 9330 with 50 khz wide signals 25 khz each side of center frequencies. just sounds like a fast radar.
DH KCMO
9330 stuck out as that's what I noticed around Mar 13th @ 0342Z. Leads me to believe that the helicopter = HAARP.
A while back, zackers posted (http://www.hfunderground.com/board/index.php?topic=6326.0 (http://www.hfunderground.com/board/index.php?topic=6326.0)) how to tell if HAARP was operating. He said to look for wide blocks of yellow in their spectrum waterfall chart:
http://www.haarp.alaska.edu/data/spectrum2/www/hf.html
If that's the case, then can see that in the last 36 hours, around 0300-0400Z they were operating around 9300 & this morning around 8700. Which would be consistent with what I & DH (from dxld) heard.
In looking at the chart from Mar 10th, can see a little block of yellow near 7 MHz around 21Z. But, doesn't show up around 22Z when beerus heard it.
http://www.haarp.alaska.edu/cgi-bin/spectrum/getchart.cgi
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The one I heard last night on 43M went between fast scan and slow scan.... != HAARP methinks.
Peace!