Re: [Discuss-gnuradio] RFX900 MIMO on old usrp, gives failed to set frequency

[Matt Ettus]

Martin Dvh wrote:
> Hi all,
> I am trying to use an RFX900 MIMO on an old usrp board (rev 3 serial 309)
> this doesn't seem to work.
> (Failed to set frequency)
>
> when I try it on a rev 4.1 board all works fine.
>
> Are the old rev 3 usrps not able to supply the 64 Mhz to the RFX or is there 
> some other problem?
>   

That is exactly the problem.  You need to make the previously mentioned 
mods to make the board work with the old USRPs (serial # <500)

Matt