[Discuss-gnuradio] Bypassing daughtercards

[njm25]

I am currently working with GNU radio and USRP board with its transceiver 
daughtercards for transmitting and receiving signals.  I have recently aqcuired 
new RF front end hardware that can mix a baseband signal up to 3.4 GHz and 
transmit it.  The interface to the new RF hardware is thru BNC cables.  I want 
to know if there is a way that I can do all the processing in GNU radio, send 
the data through the usrp board to and the transmit DAC's, and then send the I 
and Q channels from the DAC to the new RF front end hardware.  For example, are 
there pins on the USRP board (or daughtercards) that I can pull the I/Q data 
off of to send to the new hardware?

Thanks
Nick