A sync detector does not have to be a sideband-selectable type to be
a what
would be referred to as a true type of sync detector. It does need to
be a
PLL type, though.

Pete

This is true, of course, but a sync. detector in modern equipment that
is not sideband-selectable
for the SW environment, where there's often so much adjacent channel
interference, is a perversity.

RK