[Discuss-gnuradio] best transmitter/receiver setup for large coverage

[dilip thapa]

Hi,
 
I am using usrp2 and gnuradio 3.3.0.
I want to use benchmark_tx.py as transmitter and benchmark_rx.py as receiver.
so that multiple receiver at distance of around 1 KM should get good signal strength.
 
So could you please let me know the best options for tx and rx waveform, so I could get the maximum range of coverage.
best options means:

transmitter frequency, tx gain, tx amplitude and rx-gain, if there is any other then let me know.
 
I need this to do spectrum sensing with energy detection.
 
with Thanks,
Dilip