Basically it is waiting for a "user preferences" capability to be introduced so the tuning method can be varied to individual taste. I'm not going to change the default behavior until then. Otherwise I'll get pummeled with people who don't like the change..
Some important clarification about the directory locations.
Anything in /root/Beagle_SDR_GPS will be overwritten with a software update. So do not edit the files in /root/Beagle_SDR_GPS/unix_env/kiwi.config Files here are templates that are copied to /root/kiwi.config exactly once if they don't exist. Because the /root/kiwi.config directory is outside of the /root/Beagle_SDR_GPS directory structure it will not be effected by an update, and it is safe to edit them (and making a backup copy is a good idea).
Bonnie, I edited your post slightly to reflect this.
Anything is possible, but you run the risk of disrupting the carefully balanced realtime requirements of the Kiwi code. Particularly when there are multiple connections. Much easier to buy another inexpensive BeagleBone or even cheaper R-Pi.
Also note that the Kiwi software is based on OpenWebRX, but is heavily modified. So you are not simply running a "second instance" that might somehow take up less resources.
A: JORN, Over-the-horizon-radar (OTHR) from Australia. Note the short intro tone in the middle of the passband. This distinguishes it from similar sounding signals like (for me) the Tiger radars of the SuperDARN network etc.