Re: [Discuss-gnuradio] gnu Radio and Mode S (1090 MHz)

[Matt Ettus]

On 03/16/2010 10:52 PM, Andrew Rich wrote:
> Thanks Nick
>
> I have some more questions if I may
>
> 1) What determines the bandwidth of the daughter boards for USRP ?

The bandwidth is limited by the data rate back to the computer, so with 
the USRP1 you get 8 MHz of RF BW, and with the USRP2 you get 25 MHz. 
The exception is the TVRX daughterboard which has SAW filters that limit 
you to 6 MHz.

> 2) Where do you connect if you want to bypass the RF board and connect
> at base band ?

Use the LFRX daughterboards instead.  They give you baseband inputs.

> 3) Will I be able to achieve what I want to achieve on openSUSE linux ?

Yes

> 4) When you talk about "code" what language ?

C++, Python, or using GRC which is a graphical design system.


> 5) What is a trunk when you talk about gnu ? is that the software base ?

Yes

> 6) I assume I can get an RF board and do 1030 MHz as well ?

Yes.  The DBSRX will receive that frequency, as will the WBX and RFX900/

> 7) Can I use perl to do any of this ?

Probably not.

> 8) Would someone be able to guide me through this.


> 9) Is a "PC" suitable and quick enough to keep up with the signals ?

Yes.

> Does the USRP and code lag or is there plenty of time left over ?

Not sure what this means.  People have done what you are trying to do 
already and it works.

Matt