Randomly recieving only noise at times

Need help installing or figuring out something about your SDR? Ask here.
Post Reply
Posts: 1
Joined: Wed Jun 03, 2020 7:57 pm

Randomly recieving only noise at times

Post by fgsfds » Wed Jun 03, 2020 8:12 pm

Getting accustomed to SDR things. While trying out the new RTL SDR v3 dongle to listen to DSD stuff, i often encounter the thing you see on the following screens: for seemingly random periods of time, most to all kind of signals get overwhelmed by what seems to be noise. Not sure if that happens everywhere, but i at least see it covering everything from 100 to 160+ Mhz. At exactly the same time, i am still able to listen to FM with no visible issues via some other hardware, such as built-in mobil phone FM reciever etc. Any ideas what might be causing this?
3.png (1.05 MiB) Viewed 166 times
2.png (994.34 KiB) Viewed 166 times
1.png (708.48 KiB) Viewed 166 times

Site Admin
Posts: 2676
Joined: Mon Nov 19, 2012 11:54 pm

Re: Randomly recieving only noise at times

Post by rtlsdrblog » Thu Jun 04, 2020 9:13 am

There appears to be a very strong intermittant signal interfereing there. Possible a pager. When that strong signal transits it overloads the SDR causing the lowered reception.

Tune around the spectrum and see if you can find it. Then you can build a bandstop filter to reduce it's power.

Post Reply