[BC] IBOC DX and the shortest day of the year

[Dan Dickey]

In general AM IBOC is not intended to work over skywave.  The guard interval 
between OFDM blocks is not really long enough to handle the delay spread 
that can happen with skywave hops.  I'm not saying that someone somewhere 
cannot decode IBOC after a hop or two but reception won't have enough 
probablity to be significantly useful.  DRM on the other hand is easily 
decoded after several hops because it was designed that way.

But when either IBOC or DRM are decoded from skywave paths they sound great. 
Which is the one of the main points of the DRM system.

Best regards,
Dan Dickey


----- Original Message ----- 
From: "Paul Smith W4KNX" <paul at amtower.com>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Wednesday, December 21, 2005 10:31 AM
Subject: [BC] IBOC DX and the shortest day of the year


>
> Since this is the shortest day of the year, and AM IBOC stations can 
> operate
> till 6:00 PM, I was wondering if those with an IBOC receiver have ever 
> heard
> IBOC via skywave?