[opendtv] Re: F.C.C. Likely to Open Airwaves to Wireless
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 15 Sep 2010 07:31:04 -0400
At 3:47 PM -0400 9/14/10, Albert Manfredi wrote:
Wasn't the old UHF analog rule something like local stations had to
be 6 channels apart?
Not exactly. As I understand it use of a UHF taboo channel causes
inter-modulation products that can affect a range of non adjacent
channels. This site describes the issues with UHF channel 30, for
which there were 18 taboo channels for various reasons.
http://home.earthlink.net/~wb9nme/articles/atsc-5.html
John is correct that with DTV there are fewer UHF taboo channels, but
there are more UHF channels used now, packed in less spectrum. So I'm
not certain how much white space spectrum is available today versus
during the NTSC era.
Regards
Craig
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