You can use multiple usrps on one PC. To select the USRP that you want
to use, you can use the which parameter of the usrp source
src = usrp.source_s(which=)
This is a number between 0…N.
You can identify which is which by looking at the serial number of your
These might not be exposed in GRC, so you need to edit this in the
Also, you can transmit and receive simultaneously also with just one
I have two usrps on one machine in continuous operation. One usrp is
using the computer’s usb bus, and the other is hooked to a PCI usb
card, to ensure full bandwidth on both usrps. But unless you need full
bandwidth on each device, you probably don’t need to do this.