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http://forum.tvfool.com/showthread.php?t=695 , WCBS 2 is real channel UHF 33 , WNBC 4 is real channel UHF 28 , WNYW 5 is real channel UHF 44 and WABC 7 is real channel 7 . I am in complete and total agreement with Tigerbangs on the HDStacker. The UHF part of the antenna is below the VHF part of the antenna , so the VHF part of the antenna is close and blocks reception coming in at a angle. The stacking arangement gives the antenna a very narrow Verticle Bore Site , this is not good for UHF reception. If the phasing loop between the antennas has been taped to ANY metal , Un tape it. If the phasing loop is run in any other manner then what is shown in the instructions , then make it like the instructions say and make it like the instructions show. The phasing loop between the two parts of the antennas Must Not be close to or touching any metal. More testing , run a Known To Be Good RG-6 coax from a Known To Be Good Matching Transformer direct to the Tv. No splitters , No amplifiers , No grounding blocks , No VCRS , No DVD players , No switching devices. Using the Know to be good coax , you can also work through the parts of the system and find the bad componet or componets. Look inside the coax connectors and see is the outer shielding and braid wires are pushed in to center wire. If so then push the shielding and braided wires away from the center wire. Also clean the foam that separates the center wire from outer shielding of the coax cable.