Hi Alan,
My best directions are the SW and SE direction. There i can come to 160 NM. The North is blocked a little bit by the Black Forest and the South is also limited by the Alps. This is o.k. I run the installation with two separate computers and two separate RB installations with 6 antennas as seen on the picture. No issues at all, it is like operating 2 computers with 1 antenna for each but with possibility to switch to a different antenna with different range.
Greetings Rolf