Re: [Discuss-gnuradio] Suse10.1 walkthrough and a question concerning crosstalk

[Matt Ettus]

Mark Sullivan wrote:

> When I inject a signal at a -45 dBm level on the "RX-B" sma connector 
> on a Basic RX daughtercard, I see a copy of the signal on the "RX-A" 
> side when I use usrp_fft.py. The level is 10-20 dB below that of what 
> I see if I move the signal from "RX-B" to "RX-A," but this seems like 
> too much coupling. Using a 50 ohm termination on the unconnected sma 
> connector helps a little bit. I see no copy of the signal from either 
> input of the other Basic RX daughtercard. Any thoghts, anyone?

I don't know what's happening here, but I see about -80dB coupling 
between the channels.

> Here is a walkthough I put together for Suse10.1. I found a few 
> "gotchas" not described in the build instructions on the Wiki.

Thanks!  I put this on the wiki, but didn't "wikify" the formatting.  
Feel free to edit it.  It is linked to from the Suse install page.

Matt