Re: [Discuss-gnuradio] Failed to tune to low frequency with usrp.tune

[Matt Ettus]

DiX wrote:
> Hi,
>
>     I am playing with a program which transmits music with narrow band freq
> modulation between two FLEX2400 broads. 
>
>     The program works like a charm when I tune to 2.4Ghz with the sentence: 
>
>     " self.tx.tune(self.subdev._which, self.subdev, freq) ". 
>
>     But it failed to work if the freq is tune to lower than 2.3Ghz. Is that
> because the freq license or something like that?
>   

That is because the onboard VCO typically won't tune below 2.3 GHz.  You
can change line 456 in gr-usrp/src/db_flexrf.py to allow you to try
going lower.

Matt