If you have a working external antenna, then you do not need this device. If you do not have a working external antenna, then you do not need it all the more, because you will not see the effect of it anyway. A TV with an indoor antenna and no antenna at all shows the same. The very first attempt to connect an external antenna through this device ended with a fallen off "additional input" . but how can a plug be held on a soldered thin wire?
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