If you are familiar with matlab, maybe you can try my matlab scanner.<br><br>It is easy to change frequency range, RBW, etc, and get spectrum picture.<br><br>Please google:<br>&quot; rtl sdr matlab scanner&quot;<br><br>Good luck!<br><br><br>393775602 &lt;393775602@qq.com&gt; wrote:<br><br><div>Hi,</div><div>&nbsp; &nbsp;i am doing a project to get&nbsp;a certain fequencyspectrum &nbsp;. And thanks to the wonderful tool rtl_power, i can get some dbm data over a very wide&nbsp;area of the frequency specturm.</div><div>&nbsp;and i read the source code in order to change it to get a certain frequency specturm.Sadly, i know little about digital signal processiong and getting a hard time solving it.</div><div>&nbsp;does anyone know how to&nbsp;<span style="line-height: 1.5;">get&nbsp;a certain fequency</span><span style="line-height: 1.5;">spectrum using rtl_power or some other tool.</span></div><div><span style="line-height: 1.5;">&nbsp;</span></div><div><span style="line-height: 1.5;">&nbsp; &nbsp;sincerely</span></div><div><span style="line-height: 1.5;">&nbsp; &nbsp;Chen Zujie</span></div>