At this point, I am abandoning the Pi for anything other than packet and JS8Call.
I have set up a more robust PC running Linux Mint and 73 Linux. ?VARA and Pat are communicating unlike before. I am unable, though, to connect to any VARA HF gateway. I have tried multiple stations on 40, 30, and 20M at distances between 5 and 500 miles.
Listing on another receiver, I hear my station sending out the packets. I must have something configured incorrectly.