[opendtv] Re: Charles Rhodes on SFNs
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 25 Jun 2010 08:50:23 -0400
At 3:46 PM -0500 6/23/10, Manfredi, Albert E wrote:
1. Unless you deploy a Boston-to-Richmond regionwide SFN, you still
cannot reuse the same frequencies in these different markets. The
case today is that the same channels ARE used, in every other market
up the coast, using the intevening market as the interference zone.
Not exactly. Many frequencies - especially VHF channels - need much
wider protection, as in hundreds of miles.
With SFNs the potential for interference is much more limited and
YES, you can checkerboard frequencies from market to market, which
means that every market can have about half of the available
channels, as I have noted for years. That's plenty of spectrum in
each market to offer equal or better services than exist today.
Regards
Craig
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