Brett L Trotter wrote: > I've been attempting to get my LFRX daughterboard working on a USRP > board. Most of the gnuradio-examples I've tried don't work on the LFRX > (they worked on basic rx). For instance, some of them come up and the > graph displays are not moving until I drop the gain to 0-3. Some lock up > and are not adjustable. > > Is there something obvious I'm missing? The LFRX is a true DC - 30 Mhz board. DC means you either have to apply the corrent DC-bias to your input
OR AC-couple your inputs by using capacitors. For my experiments with capturing analog baseband video with LFRX I used ac-coupling for both ground and signal line. (using several uFarad capacitors, to create a frequency response from 10 Hz to 30 MHz) If you DC-connect the ground from LFRX to real ground without adding a dc-bias directly you will probably get nothing out of it. Greetings, Martin > > Is there a good frequency I should be able to pick up with am_rcv.py and > a 20ft piece of wire? > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
