Re: [Discuss-gnuradio] daughterboard xcvr2450 tx/rx

[Valerio, Danilo]

Same problem here!
I am running gnuradio from trunk (rev. 10496), on kubuntu 8.10.
I have a USRP2, firmware and FPGA updated to the last available version.
I am also a very beginner.
If I set any frequency other than 2.4GHz (by just modifying it in the grc block) I get a choppy, blinking, and buggy signal.

There are so few examples on the USRP2 in the code and it is not so easy to understand how to work with it if you have never used a USRP1.

Best Regards,
Dan

> From: Costantini, Andrea
> Subject: [Discuss-gnuradio] daughterboard xcvr2450 tx/rx
> Date: Sun, 1 Mar 2009 18:11:43 +0100
>
>
> Hi everybody,
> I'm new in GNURadio and USRP's world. I'm working with ubuntu 8.04, USRP2,
> daughterboard xcvr2450, and last trunk of GNURadio. I'm trying (with GRC)
> to transmit and receive on the same USRP2 a sinusoidal signal. (with
> frequency 50 kHz). In my trasmition chain at first I generate a sinusoid
> with "signal source" block, after I transmit with "usrp2 sink" block, and
> in reception chain I receive with "usrp2 source" block and I see all with
> "fft sink" block. My program works correctly only if I set the frequency to
> 2.4GHz. If I try to shift the frequency to, for example, 2.45 GHz (or any
> other frequency) my program don't work correcly. What could be the
> problems, or What am I doing wrong? Which is the tx / rx switching rate for
> this daughterboard?
>
> Thank you in advance