Bela,
The Y0 to Y3 is the base two numbers of the Band_0 and Band_1 input.
Band_0? Band_1? BPF Selected
0? ? ? ? ? ? ?0? ? ? ? ? ? 0 - Y0 connected to W
1? ? ? ? ? ? ?0? ? ? ? ? ? 1 - Y1 connected to W
0? ? ? ? ? ? ?1? ? ? ? ? ? 2 - Y2 connected to W
1? ? ? ? ? ? ?1? ? ? ? ? ? 3 - Y3 connected to W
Note that BPF 0 is the highest frequency band, and BPF 3 is the lowest frequency band for the build.? This is selected using the Band Configuration screen.
73
Evan
AC9TU