<http://www.theregister.com/2007/08/13/smart_radio_dumb/>
....
At the end of July, the FCC's engineering office published two sets
of results from a four month trial of agile radio equipment submitted
by the "White Space Coalition", which includes Microsoft, Google,
Intel, Dell, and HP.
"Depending on the effectiveness of shielding of a TV receiver's
tuner, emissions within a broadcast white space (i.e., within an
unused broadcast channel) could potentially cause co-channel
interference to a TV receiver tuned to a digital cable channel that
overlaps the spectrum of the white-space device emission," the FCC
noted.
The lab found that the spectrum sensing of the equipment it tested
couldn't detect the white space with sufficient accuracy.
[MORE]
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