Re: [Discuss-gnuradio] Re: USRP2 and FLEX900

[Josh Blum]

> Thanks, does your response mean that I can use usrp2 (with usrp2 driver)
> in full duplex
> mode, its just that I have no control over the ports...so if receive or
> xmit only

yes, note the following:

* if you receive only, then TX/RX is the receive antenna port.
* if you transmit and receive, then RX2 is the receive antenna port.

the switching is done automatically by the fpga's ATR registers.

> tx/rx port is used (and I make no calls to set_antenna or
> set_rx_antenna) and if
> doing duplex tx/rx is used for xmit and rx2 is used for receive? Also, does
> this work for both wbx and rfx900.

yes, same for wbx and rfx series. You can do full duplex.

> Or does it mean I cant do duplex unless I use UHD?

The main difference as far as antenna switching is concerned is that the 
UHD lets you select the RX antenna when doing a receive only. The same 
rules above apply when transmitting. 
http://www.ettus.com/uhd_docs/manual/html/dboards.html#rfx-series

-Josh