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What am I hearing?

n8hensley

n8hensley

Member
Jan 15, 2012
8
0
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Hey guys,
I can't figure out what I'm hearing. It's nine beeps/pulses, followed by a longer beep/pulse. It just repeats that pattern over and over. I'm hearing it on 4770 kHz (or thereabouts). I assume it's a utility station of some type, but I can't find any reference to it. Does anyone know what this is?

Thanks
 

n8hensley said:
Hey guys,
I can't figure out what I'm hearing. It's nine beeps/pulses, followed by a longer beep/pulse. It just repeats that pattern over and over. I'm hearing it on 4770 kHz (or thereabouts). I assume it's a utility station of some type, but I can't find any reference to it. Does anyone know what this is?

Thanks
Click to expand...

The more sw listening you do the more you'll realize there are signals all over the place like that. Some I can identify as data but there are many that are just plain wierd.
 
hmmm...I hear it again today. Only this time it's seven beeps, followed by a longer noise. And just now, as I write this at 0048 UTC, it quit all together. Whaaa?
 
does the noise part sound like a modem or varying tones?
agree its some sort of data most likely.
i never did id some of the stuff i have heard.
 
How far from an airport are you? Are you in a flight path, for take off or landing? It could be tower transponders and the signals may be for navigation.
Sometimes, certain bouys in large waters use transponders instead of light houses. It depends on where you live.
 
Wrench said:
How far from an airport are you? Are you in a flight path, for take off or landing? It could be tower transponders and the signals may be for navigation.
Sometimes, certain bouys in large waters use transponders instead of light houses. It depends on where you live.
Click to expand...

I live in Chicago, so I'm close to two airports. I'm also next to a large body of water (Lake Michigan).

At any rate, I'll try to record it next time I hear it.
 
...I'm trying to upload a video of the signal, but I can't get it to work. Fiddlesticks!
 
Last edited:
http://www.facebook.com/v/298603470188833

Hopefully this link works.
I heard the signal again today (2/3/12 @ 1738 UTC), but on a different frequency (10895 kHz). Meaning, of course, it might not be the same signal. But it sounds the same as the one I mentioned earlier, so you can get an idea of what I've been hearing.
...unless the link doesn't work...:thumbdown:
 

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