Re: [Discuss-gnuradio] GPS active antenna biasing

[Gregory W Heckler]

You can do this externally by putting in a bias-tee in the RF line prior 
to input to the USRP. I've personally used the following from MiniCircuits:

http://minicircuits.com/pdfs/ZFBT-4R2G-FT.pdf

Or if you want to take a more risky route, on the DBSRX daughterboard 
there is header to input a DC voltage. I'm trying to do the same thing 
(GPS with the DBSRX & USRP), and am not going to risk frying something 
at this point. Hope this helps.


Davide Anastasia wrote:
> HI List,
> I get a USRP + DSBRX. Now I need to buy an active antenna for GPS, but I
> don't know how to bias it. Can anyone helps me?
>
> Greetings,