> However, I'm confused by all the frequency setting/tuning functions at our 
> disposition. In my example,
> 1)I am setting cordic-freq (set by parser) while calling the main program, 
> e.g. -c 2450000000 -that's the frequency I want to set my USRP to.
> 

OK, I guess everything is fine. As a matter of terminology, calling it
center freq might make more sense. The cordic frequency is the DSP
frequency.

> Why is uhd.tune_request setting the center frequency to 2.6 instead of 2.45 
> GHz?
> Also, am I calling the uhd.tune_result function wrong - why are all the 
> values 0?

You are making a new (empty tune result object). Not the one returned by
the set center frequency.

> Furthermore, what is the difference between 
> self.u.set_center_freq(options.cordic_freq,0).actual_rf_freq and 
> self.u.set_center_freq(options.cordic_freq,0) functions?
> 

Accessing a parameter vs not accessing a parameter?

-josh

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