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09-02-2009, 08:08 AM
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While searching thorugh this document ( http://www.ntia.doc.gov/frnotices/20...ule_031207.pdf
) to find information on CECB requirements, I ran across this little gem.Section 33
…in an FCC NPRM on ‘‘Unlicensed Operation in the Broadcast Bands’’ (Docket 04–186), the FCC expressed concern that low-quality DTV receivers could severely impact the utility of the white spaces within TV channels 2–51.’’
68 NAF suggested that desensitization performance of the converter boxes should be considered and should be equivalent to most of the stand-alone TV sets presently marketed. NAF also proposed that detailed engineering measurements be made of the susceptibility of current DTV receiver designs to interference from out of band signals.
69 NAF noted that the FCC was conducting tests that will not be available until mid–2007, but presented preliminary results of the three receiver tests it funded at the University of Kansas.
70 Raising another issue regarding interference, MTVA recommended that NTIA adopt MTVA specifications for NTSC into DTV taboo channels (television channels that cannot be used because of interference with other channels).
71 MTVA did not provide laboratory or real world measurements supporting its recommendation or information on whether manufacturers can currently build DTV equipment capable of meeting proposed specifications.