Unknown signals @4XXMhz

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djaa2807
Posts: 4
Joined: Mon Oct 05, 2015 1:15 pm

Unknown signals @4XXMhz

Post by djaa2807 » Mon Oct 05, 2015 1:18 pm

Hi could anyone possibly give any ideas on what type of signal these might be:

>>>> SIGNAL 1

Image





>>>> SIGNAL 2

Image

rtlsdrblog
Site Admin
Posts: 2237
Joined: Mon Nov 19, 2012 11:54 pm

Re: Unknown signals @4XXMhz

Post by rtlsdrblog » Mon Oct 05, 2015 11:29 pm

What country are you from?

First one might be DAB, though it seems to be outside of the usual frequency range.

Second one is just noise from the USB clock, you'll find this type of noise at multiples of 480 MHz.

djaa2807
Posts: 4
Joined: Mon Oct 05, 2015 1:15 pm

Re: Unknown signals @4XXMhz

Post by djaa2807 » Tue Oct 06, 2015 10:05 am

Thanks,

I am from reunion island.

First one looks like DVB-T

Second one as you said, USB clock noise.

rtlsdrblog
Site Admin
Posts: 2237
Joined: Mon Nov 19, 2012 11:54 pm

Re: Unknown signals @4XXMhz

Post by rtlsdrblog » Tue Oct 06, 2015 1:05 pm

I don't think its DVB-T as those signals are usually much wider, at least 5 MHz wide.

djaa2807
Posts: 4
Joined: Mon Oct 05, 2015 1:15 pm

Re: Unknown signals @4XXMhz

Post by djaa2807 » Tue Oct 06, 2015 6:11 pm

You are right.. dvb-t is much higher bandwidth..
I'll confirm it's DAB as soon as i figure out how to use SDR-J to tune at that frequency :)

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