Hi, > Hi Brian, > > I didn't think of these cases - they make sense. > I have added an option to set the bandwidth in the I/O configuration dialog. It is
Great! > available in the git repository. I could test it with hackrf anbd I hope somebody > else can test it with the bladerf. > Currently it does no checking - just passes the value directly to gr-osmosdr. Just as an example, we have here three LTE carriers, and even with a few cm of wire as antenna it is almost impossible to determine the three signals here. It all mixes to a mush of signals. They are located as neighbor channels, 10 MHz spacing (796/806/816 MHz), 9 MHz bandwidth each. Also the GSM bands are full of real and fake carriers what becomes visible when you have a look at the band ends and see signals "off limits" that simply are not there. With the USRP1 / WBX I only can see a part of this spectrum at a time, but almost without such aliasing artifacts. Otherwise, I like the little thing, seems reasonably sensitive even at high frequencies (checked this with watching LTE2600 signals), just the lower limit of 300 MHz is a bit ugly, down to 50 would be great :) Frequency is off 2ppm, not good enough for hopefully (soon?) coming openbts support, but I guess some recalibration can fix it. While writing this, I downloaded and compiled it. The filter itself works great, I can see it from the noise floor, just the images are not gone, seems that the RX simply is not as good as other SDRs. Anyway this is only a quick shot, I will test it more thoroughly these days, with different combinations of sampling rate and filter limits. > Alex Ralph. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
