Hi Michael, I think you're right, looks like spurs of the tuner / synthesizer, due to the TX amp not getting shut down for tuning. Do these go away if you set the tx_gain to zero just before and to its original value just after tuning?
Best regards, Marcus On 03/09/2017 08:21 PM, Michael Skaggs wrote: > Hi all, > > We are working with an E312 platform and are seeing large, broadband > frequency spikes when the system must retune over a wide set of > frequencies. > > I have attached a photo of the issue. The blue you see near the top of > the spectrum is the noise we are talking about. We are currently > tuning the system between 345MHz, 400MHz, and 455MHz. We suspect this > issue is occurring due to the amplifier not turning off during the > retune, however, we did not find any topics already discussing this > problem. > > Could this be an issue with our hardware, or is there a way to work > around this issue? > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
