Antennas and power were two tables listing the same bands, one under the other,
so configuring a band meant matching rows by eye between them.
They are now one row per band. That the two settings are stored separately and
applied on different triggers — antennas on band change, power on band or mode
change — is a backend detail, and no reason to split what is a single decision
per band for the person configuring it. A rule in the header keeps the two
groups readable.