A possibility but it would only make sense to use the ATSC pilot as the narrow spectrum examined. It would be hard to imagine such a deep null that even the pilot was below -114 db, yet the ATSC signal was recoverable a few feet away. Like a bullet hitting a bullet. John----- Original Message ----- From: "Allen Le Roy Limberg" <allimberg@xxxxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
The problem with a narrowband detector is that it could be physically located in a spectral null of the TV signal, which null is caused by multipath. If the detector activated a low-power transmitter, the signal from the low-power transmitter could interfere with nearby TV receivers outside the multipath-caused spectral null.
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