Hi,

I am using gnu 3.7, Ubuntu 13.04, USRP N200 with XCVR2450.

When I runĀ  gr-uhd/ examples/grc$ sudo ./uhd_tx_dpsk.py I can increase tx gain 
to more than 20 dB. The power of the XCRV2450 is 100mW.
In this case the sink or the source will react to an higher gain (>20dB). 
1. Why does it happen?

2. The second question is how about always transmitting with max gain?


-- 
NE
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