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HD Radio

B

bigdude9192

Guest
Any station in Central Illinois broadcasting in HD? Any plans to broadcast in HD?
 
I have a question about HD radio. I hear you can have more than one side channel to your main signal. How many can you really have? One, Two, Three? Plus you main on air. And when you add two side channels does that degrade your signal on the main?

I've heard it degrades your markets coverage? That when you go HD your signal does cover the same places you once did in analog?

What about AM, does it truely help AM stations...do they sound like FM does today? Just wondering.
 
HD on AM is kind of a joke. Currently it cannot be used at night, as the sideband interference would travel great distances and interfere with adjacent channel stations.

In central Illinois, I think most of the AM broadcasters would be nucking futs to convert their graveyard frequency AM stations to HD...they would never make the money back.

As for FM; there holds some promise as you can have at least 2 channels of good quality along with CD quality audio of your main channel. The problem is; since you are still using most of your power with your analog signal (this is still important as this is the kind of receiver most listeners have) you cannot use much power for your digital quality stuff. What happens is you get real poor building penetration with your HD or digital product.

As for coverage, most people complain that, as with AM, HD on FM fills up your side channels causing interference on your first adjacent frequencies. So in the fringe areas where you used to be able to pick up stations on the adjacent channels, they are now being blocked by the IBOC hash from stations equipped with HD.

Drive to a market where HD is present...press your scan button and see how many times it stops on an empty frequency with static that is directly adjacent to a station running IBOC.

THe system basically sucks, but we had to have something that was in-band on-channel as there are no recievers our there.
 
I hear text and information is a possibility with the new system, what type of data can you stream other than Song and Artist title information....WOW, I see a wonderful potential with this system. Like printers in cars, where you can print a coupon and take it into a business...or give a special code listeners recite in a business for a big discount. I think it has endless potential.
 
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