LiveATC Discussion Forums

Air Traffic Monitoring => Listener Forum => Topic started by: noraatorium on November 11, 2023, 08:48:10 AM

Title: Pi high noise floor
Post by: noraatorium on November 11, 2023, 08:48:10 AM

Hello,

I am fighting with a high noise floor on the Pi which is about 40dbi higher vs when the same gear is plugged into a computer next to the Pi.
I get the high noise floor even with an antenna unplugged and gain set to nothing.
Tried different Pis, power supplies, rtlsdr dongles, antennas, grounding the Pi. I assume the Pi is hyper-sensitive to interference but is there a way to prevent that?
Encasing it in a metal box?

Thanks

Title: Re: Pi high noise floor
Post by: noraatorium on November 11, 2023, 09:49:20 AM

Actually it seems to be related to the RTLSDR-Airband application. Noise floor is fine with SDR# but high with the app regardless of gain. Weird...