I have my USRP capturing video/audio from the TVRX daughter card, then demodulating the audio to baseband and playing to sound card and dumping to disk. I can play back the captured audio to the soundcard. Yay!
I want to send the captured audio out through the Basic Tx, but after reading the group archives, I think there may be a problem. Should I be concerned about impedance mismatching between the Tx board and an RCA-type audio connection (50ohm out to 75ohm input?) (I am hesistant to hook up the USRP TX_A output directly to the RCA input in case there is an overheat/short circuit/bad mojo issue.) Has anyone done this successfully? Can I do this directly or will I need an external buffer/amplifier to drive these signals? I also read about a 'hole' in the Basic Tx frequency output, but I don't know if this will be a problem for me. If I want to output 20-20kHz signals, will they be filtered at the TX_A output? If this is not a problem, I should be able to produce a stereo output by using TX_A and TX_B for Left and Right, correct? Eventually, I hope to capture/create NTSC/PAL signals and replay them through an external modulator for television equipment testing. Thanks. BTW, I mounted my USRP in a Velleman G758 case, but the internal mounting hardware wouldn't quite fit the USRP, so I had a little drill work to do. It works ok, and now I don't have to worry about kids and cat effects. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
