Nick said:Downgrading to HD won't help a station compete within a cross-border market, it'll just help with retaliating against adjacents in other markets throwing IBUZ across the border. Might make them think twice before installing an adjacent-channel-polluter, since Mexican stations can fire back with a whopping 50000 watts of IBUZ and wipe them out at night. Imagine a 50000 watt clear channel signal full of noise.
Since Mexico is in the process of moving perhaps 80% of its AMs to FM after determining that AM was not viable in the long run, it's unlikely that they care a great deal about the AM situation and no private owner would build a 50 kw AM just for its annoyance value.