Re: [Discuss-gnuradio] simple transmit questions

[Matt Ettus]

address@hidden wrote:
> First, I assume that you need 2 seperate computers to run 2 USRP boards (1 to 
> transmit and 1 to receive).  I just wanted to make sure.
>   

No, you can have multiple USRPs on one computer.  They can be identified
by a unique number programmed into their EEPROMs.

> Second, for a simple transmit using the fm_tx4.py example, how do you change 
> the output gain for the transmitting signal.  I assume it has to do with the 
> line
>   

> gain = gr.multiply_const_cc (4000.0 / options.nchannels)
>
>   

yes

> but I don't know what the max gain can be set to.
>
>   

The max signal output from the computer to the USRP should be
+32767/-32768.  However, the RFX boards will clip somewhere lower than that.

Matt