On 07/01/2012 03:58 AM, Michael Hill wrote: > The XCVR 2450 covers frequencies around 2.4 GHz and 2.5 GHz and also 4.9 to > 5.9 GHz. > > When running uhd_usrp_probe it said 2400 to 2700MHz! > (E.g. I assume hardware performance drops off above 2.4 GHz but any reason > why it didn't cap my frequency at 2400MHz?) >
I see probe printing 2.4 to 6.0. Maybe you are looking at a different board? Can you send the output of uhd_usrp_probe. > > http://code.ettus.com/redmine/ettus/documents/12 > Also I'm definitely not a hardware designer but I've been looking at the > XCVR2450 datasheet and it seems there is a 2.45 GHz band pass filter for > the lower frequency receiver pass (but none for the higher one..) and also > for the transmit pass there is a 5.5GHz band pass filter for the higher > frequency transmit pass but not the lower one, How come this is the case? > Probably a design recommendation from maxim, or something we empirically determined. > E.g. If I wanted to reduce my unwanted image frequencies etc around 2.4 to > 2.5 GHz, could I get another BP filter of the same type and just externally > filter before transmitting to the antenna? > Yes, definitely. Also see: http://files.ettus.com/uhd_docs/manual/html/dboards.html#xcvr-2450 -Josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
