Get help identifying an unknown signal.
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Richard9026
- Posts: 8
- Joined: Mon May 16, 2016 6:10 pm
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by Richard9026 » Sat Jun 25, 2016 10:17 am
I was searching the sdr spectrum when i suddenly found like 60 signals , all of the same type (I'm in Romania)
They start on 796.480 mhz and end on 805.480 mhz , they have an bandwith of ~27khz and the distance between them is ~29khz
On signal identification wiki I don't find anything
The start of the signals
- start.jpg (639.5 KiB) Viewed 12119 times
The end of them
- end.jpg (590.8 KiB) Viewed 12119 times
An zoomed in signal
- one signal zommed in
- 9114_589177004436807_568624372_n - Copy - Copy - Copy.jpg (127.64 KiB) Viewed 12119 times
How 1 signal sounds (NFM) http://www.mediafire.com/download/3vgqm ... 1Hz_AF.wav
It is just interference ?
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rtlsdrblog
- Site Admin
- Posts: 2821
- Joined: Mon Nov 19, 2012 11:54 pm
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by rtlsdrblog » Wed Jun 29, 2016 3:32 am
Is there an official frequency spectrum database for your country that you can lookup? Usually countries will provide such a database and you can go and see what company owns that specific frequency allocation. The signal looks quite wideband, might be for HD TV, or mobile internet.
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rtlsdrblog
- Site Admin
- Posts: 2821
- Joined: Mon Nov 19, 2012 11:54 pm
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by rtlsdrblog » Thu Jun 30, 2016 9:52 pm
Yep appears to be DVB-T
http://www.sigidwiki.com/wiki/DVB-T. It's just that you can't see the full size of it with the RTL-SDR. Not sure why there are lines throughout it though, could be some sort of interference as well.
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luckystrike
- Posts: 7
- Joined: Mon Feb 03, 2020 8:46 am
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by luckystrike » Mon Feb 03, 2020 9:19 am
I think it's your laptop AC/DC power adapter.
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hotpaw2
- Posts: 165
- Joined: Sat Jan 14, 2017 11:07 pm
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Contact:
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by hotpaw2 » Thu Feb 06, 2020 3:58 am
Looks like a wide OFDM modulated signal. DVB-T uses OFDM.