Hello,
1. You probably can correct the aU errors and garbled sound by following https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Working_with_ALSA_and_Pulse_Audio 2. The antenna should not be a problem. 3. A flowgraph for an RTLSDR is here: https://wiki.gnuradio.org/index.php/File:RTLSDR_receive_fg.png --- Barry Duggan KV4FV https://github.com/duggabe
