NPR "Side Channels"

[Larry Weil]

At 04:23 PM 4/23/2005, Joseph Pappalardo wrote:

>I read recently that NPR will begin offerring "side channels" to their
>affiliates.

Can you explain this, what is meant by a "side channel"?  Is this something 
that would be broadcast on a subcarrier, or perhaps something that is a 
second channel in a digital mode such as IBOC?

It might be helpful if you can provide a link back to where you read this.


Larry Weil
Lake Wobegone, NH