Also very few daughtercards on N210 actually support variable analog bandwidth 
anyway. 

Sent from my iPhone

> On May 11, 2021, at 9:08 PM, Marcus D Leech <[email protected]> wrote:
> 
> (1) because the general approach is to give about 80% effective bandwidth 
> due to the fact that filters cannot have infinitely steep edges. 
> 
> (2) complex baseband sampling. Sample rate == bandwidth. 
> 
> Sent from my iPhone
> 
>>> On May 11, 2021, at 6:15 PM, isaac mario tupac davila <[email protected]> 
>>> wrote:
>>> 
>> 
>> Hello community
>> 
>> I'm Isaac. I'm dealing with some questions about the interpretation of 
>> sampling rate and bandwidth in a USRP source block.
>> 
>> What I understand is if I work with an USRP N210, my ADC works with a 
>> 100MS/s. If I use a Gigabit Ethernet and a data type of 16bits, I could 
>> receive in my host up to 25MS/s with a bandwidth of 20MHz. 
>> https://kb.ettus.com/About_USRP_Bandwidths_and_Sampling_Rates
>> 
>> My questions are: 
>> 
>> 1. If I can receive up to 25MS/s on my host, why my bandwidth is 20MHz? I 
>> think It is up to 12.5MHz according to Nyquist.
>> 
>> 2. Why is the sample rate value in the usrp source block equal to the 
>> bandwidth I observe? I think this bandwidth should be the half according to 
>> Nyquist too. https://wiki.gnuradio.org/index.php/USRP_Source
>> 
>> I appreciate any help to clarify this concepts 
>> 
>> Regards
>> Isaac T.
>> 
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