Yes I use LFRX. Thanks the suggestion, i will try.
2009/11/7 Karthik <karthik1...@gmail.com>: > On Thu, Nov 5, 2009 at 10:25 PM, Matt Ettus <m...@ettus.com> wrote: >> Kóczián Gergely wrote: >>> >>> Hi all! >>> >>> I use my usrp without antenna. I just want to meassure the noise but, >>> at 0Hz has always a peak. >>> >>> I saw that, this was a probleme in the past also, but i didn't found >>> the solution. >>> >>> Attached picture: >>> >>> http://img4.imageshack.us/img4/2493/messung11.png >>> >>> What did I wrong? >> >> What daughterboard are you using? >> >> Matt >> > > From the attached screen shot it looks like you are using a LFRX > daughterboard. Do you have 50ohm output impedance from your source? > You can try terminating your channel with a 50ohm terminator and see > if the peak goes away. > > Karthik > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
