FM radio is distorted

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Joined: Mon Apr 06, 2020 8:41 am

FM radio is distorted

Post by luca_t » Mon Apr 06, 2020 8:47 am

I am using an RTL-SDR dongle with the included dipole antenna mounted vertically, however, when I tried to listen to some local FM radio stations on a clean SDRSharp installation, the audio was heavily distorted. Could this be a hardware failure, or is there something else I could have done wrong?

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Joined: Mon Nov 23, 2015 1:08 am

Re: FM radio is distorted

Post by dlritter » Thu Apr 09, 2020 2:51 am

I do believe the problem is an indication for a configuration error.
A screen shot of you App settings would have been nice.
WBFM 192k bw and 50% gain for starters..

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Joined: Thu Jan 25, 2018 10:48 pm

Re: FM radio is distorted

Post by radiolistener » Sat Apr 11, 2020 1:04 am

most of all, these are is distortions due to high gain. Try to reduce RF gain on RTL settings window.

I recommend to disable auto gain and use manual gain tune, it will give you much better result.

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Re: FM radio is distorted

Post by rtlsdrblog » Mon Apr 13, 2020 9:27 am

Upload a screenshot of your settings. It's very unlikely to be a HW failure. The HW only provides the raw data, the software handles everything else.

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