Re: [Discuss-gnuradio] Correct idiom for frequency-setting when you don't have a tuner-type daughtercard?

[Marcus Leech]

Eric Blossom wrote:
> On Sat, Jun 24, 2006 at 12:52:11PM -0400, Marcus Leech wrote:
>   
> > I'm modifying my radio astronomy applications to support other than 
> > tuner-type daughtercards.
> >
> > Is this roughly correct for supporting such cards (BASIC_RX is the only 
> > one I know of)?
> >     
>
> I believe usrp.tune works correctly with all daughterboards.
>
> Or slightly more compactly:
>
>     r = self.u.tune(0, self.subdev, target_freq)
>    
> Eric
>   
That returned an error when used with a BASIC_RX card--with the latest 
CVS image.

In the particular instance, target_freq was 10.7e6, which prompted an 
error.  I would expect
 a BASIC_RX card to be able to "tune" to 10.7Mhz.

I looked around for an example that was designed for the BASIC_RX card, 
and found
 am_rcv.py, which uses the set_rx_freq() interface into USRP.  This 
seemed to work
 OK, which is why I tweaked my code the way I did.