Re: [Discuss-gnuradio] bandwidth for USRP

[Eric Blossom]

On Tue, Jun 27, 2006 at 10:55:43AM -0400, Chuck Swiger wrote:
> On Mon, 2006-06-26 at 17:12 -0700, Matt Ettus wrote:
> > >doesn't it look like the USB 2.0 is a heavily constraining bottleneck?
> > >  
> > >
> > Yes, USB2.0 is the bottleneck.
> > 
> > >And, if I'm not wrong about this, will it be possible in the future to
> > >have a USRP <--> PC interface which doesn't limit us so much.
> > >  
> > >
> > Other than 802.11, there aren't many applications that require more than 
> > 8 MHz of bandwidth.  Radio astronomy is one, but you can use fewer bits 
> 
> 
> For what it's worth, here's an simple 1st attempt to make a montage
> of 8MHz plots to show a wide band (240MHz of Galaxy 10R at 123W,
> Ku vertical):
> 
> http://webpages.charter.net/cswiger/123w_3.jpg  (1MB)
> 
> The LNB lo is 10750M, so where it says "968" the actual f is 11718MHz,
> etc. Using DBSRX. 
> 
> --Chuck

Nice.  You may want to try using the middle 6 or 7 MHz instead of the
whole 8 when pasting it together.

Eric