[Discuss-gnuradio] Loopback on a WBX Board

I have a Rev 4 USRP2 board with a WBX daughterboard. I want to write a simple
loopback test from the "TX/RX" port to the "RX2" port, just to transmit a simple
1 MHz + 3 MHz multi-tone signal, modulated up to 2.2 GHz, and then receive it
and write it to disk. Can I directly connect the two ports together, or do I
need to insert an attenuator in between the ports?? Is there anything I should
be aware of before running this basic loopback test?? I really appreciate any
advice. Thanks a lot.

Steve McMahon

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