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Technical Topics => SDR - Software Defined Radio => Topic started by: IQ_imbalance on June 03, 2018, 0217 UTC

Title: Today’s silly sdr question...rtl_power and SDRs
Post by: IQ_imbalance on June 03, 2018, 0217 UTC

So bear with me...it’s my understanding that you can get a very broadband spectrum from a RTLSDR stick because rtl_power very rapidly samples a 2MHz chunk of spectrum and then moves to the next one and so on to the tune of ~80MHz/s.  Shouldn’t it be possible to do the same thing with a higher end SDR (an Afedri, for example?). I’m surprised i haven’t seen this in any SDR software since it’s very useful for finding sporadic transmissions.....

Title: Re: Today’s silly sdr question...rtl_power and SDRs
Post by: ChrisSmolinski on June 03, 2018, 1142 UTC

Yes, this can be done with any SDR. Since it is only receiving the SDR's bandwidth worth of the spectrum at a time, you can miss very brief transmissions.

Title: Re: Today’s silly sdr question...rtl_power and SDRs
Post by: Josh on June 03, 2018, 1647 UTC

I got 3.2MHz out of my v3 rtl and 10MHz out of the RSP2, see my reviews here;
http://www.udxf.nl/The-RTL-SDR-V3.pdf
http://www.udxf.nl/SDRPlay_RSP2_SDR.pdf