On Feb 16, 10:01*am, dave wrote:

- s n i p -

1 - The stations could rent out their secondary channels
to foreign language broadcasters. *

2 - It works way better than SCA.

Dave - Now there is a practical HD-2 Idea
that makes Cent$ for FM "HD" Radio. ~ RHF

Plus other than a new standard "HD" Radio :
No other specialized "SCA" type Radio is Required.