Additional ways to NOT receive OTA signals:http://www.tvtechnology.com/article/88182
1) Indoor Passive Antennas were found to have Gains ranging from -6 dBd down to -15 dBd....or worse.
[MUCH WORSE THAN WHAT MOST ANTENNA MEASUREMENTS INDICATE.....]
[Perhaps they were referring to UHF-only antennas??? And if they were, why not say so???]
2) Indoor Amplified Antennas were NOT improving the situation and usually made it WORSE,
including amplified FM signals overloading the DTV.
[VERY UNEXPECTED AND CONTRARY TO MY EXPERIENCES.]
BTW: Second harmonics of FM stations interfere with Hi-VHF Ch7-13....not UHF.
3) People were "hiding" the antenna behind the TV or AV-Gear stack.
[DUH!!!! GUARANTEED TO KILL WHAT LITTLE SIGNAL THERE MIGHT BE....]
4) Interference from the AV-Gear, fluorescent lights, cordless phone base stations, et.al.
was frequently a problem....Part 15 rules should be reviewed.
[Q: WHERE'S THAT IN THE SETUP INSTRUCTIONS??? A: Just after the lightning warning???]
[BTW: Yet another reason why TV-BAND DEVICES (WSD) will be a problem....]
5) Location, Location, Location....moving the antenna HIGHER was generally better.
[BUT WATCH OUT IN APTs/CONDOs BECAUSE YOUR "ROOF" MAY CONTAIN METAL REBAR.]
6) Leakage of Cable TV signals were sometimes interfering with OTA reception.
[COULD BE DIFFICULT TO TROUBLESHOOT.]
7) People were confused by the ill-conceived "virtual channel" confusion and were NOT
aware that the REAL channel might be in a different band and require a different antenna.
[DUH....ANTENNA DISCUSSIONS WERE MISSING
IN THE PSAs!!!!]