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Title: design flaw experianced
Review: I am in Chicago wher there is a channel 20 broadcasting DTV on channel 21. I receive all channels with this antenna except channel 21. Th antenna delivers most of the channels from the same transmitter location as channel 21, so the aim is correct. It is relatively blind to this channel only. I just had the cables and connections replaced by an installer to make certain that everything else was OK
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