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You don't need an amplifier, nor any power injectors...
Without knowing the antenna model, we're guessing...
It makes no sense that a non-powered antenna would be supplied with one, let alone multiple power injectors.
Generally: You would only use one power injector in the entire system... And then, only if there was an amplifier in or near the antenna. The TV tuner does not need external power, and in some cases, will suffer temporarily or even permanently if you feed power into the tuner input.
If your antenna is in fact, non-amplified (non-powered), you should not be using any power injectors.
If you were starting from scratch, a mid-size all-channel or 7-51 type antenna should do well, with no need for any amplifier (or any amplifier power accessories).
Simplify, replace the unknown antenna with an Antennacraft C290, C490 or Channel Master CM-3016 or CM-3018. Start with the antenna pointed at the main group of signals, 32° per a compass. With a passive 3-way splitter, each TV should be happy.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 15-Aug-2013 at 8:33 PM.
Reason: Add title, sp.
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