Gregory W Heckler wrote: > 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. >
There are 2 ways to use the built-in bias tee on the DBSRX -- 1 - If you want to supply your own voltage, apply it to J100. Put + and GND on the marked pins 2 - If you want to use the onboard 5V regulated supply, DON'T connect to J100. Instead, place a short across the pins of J101. The board is unfortunately labeled "6V", but it is actually a regulated 5V. Matt _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
