Hi Nirmala, I'm confused, so what *calibrated measurement device* did you use to get "-80 dbm to -100 dbm"? As Marcus L has pointed out, the values you get from the USRP are *not* relative to a physical unit.
Please simply don't think the plots that *any* software gives you have something to do with dBm. They don't, simple as that. You can MAKE them do so, by converting digital amplitude to a physical meaning. For that, you need to CALIBRATE first. Best regards, Marcus On 20.10.2017 00:07, Nirmala Soundararajan via USRP-users wrote: > Hi Konstantin and Mike, > > In fact I started with 0 gains for both transmitter and receiver with > different amplitudes of input signal. The received power is always in > the range of -80 dbm to -100 dbm. > > I am not sure how to say that a certain received power (in dbm) 'is > acceptable' when given an input signal (that evaluates approx to 0 > dbm in fft) indoors when the transmitting and receiving antenna are > very close say just 0.5 meters apart for a carrier frequency of around > 800 MHz. > > regards > > Nirmala > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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