Librtlsdr vs SDR# sensitivity

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bclay
Posts: 4
Joined: Wed Aug 12, 2020 2:55 pm

Librtlsdr vs SDR# sensitivity

Post by bclay » Thu Aug 13, 2020 11:11 pm

I have been working on an application based on rtl_fm using librtlsdr and can receive several radio stations. I tuned to one I can pick up fin in my car but could not get it with my test app. I tried using SDR# and I can pick it up. This is using the same RTL-SDR.com dongle and antenna. Is there away to identify the different settings used by SDR# vs libsdr?

Bruce

hotpaw2
Posts: 165
Joined: Sat Jan 14, 2017 11:07 pm
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Re: Librtlsdr vs SDR# sensitivity

Post by hotpaw2 » Mon Aug 17, 2020 8:43 pm

Check your rtlsdr_set_tuner_gain, rtlsdr_set_tuner_gain_mode, and rtlsdr_set_agc_mode settings.
If the AGC is off and your RF gain is way down, the RTL-SDR sensitivity will be low.

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