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Message: [QUOTE="Fringe Reception, post: 198138, member: 4739"]Your antenna is one of several versions made in Red China for Chinese television frequencies and was not 'designed' for those used in the Americas.  The motors don't last very long and the pre-amplifiers are known to fail.  Since the impedance of the antenna is unknown (and unlikely to be 75 ohms), the original pre-amp should have been designed to function with that specific design and that would include provisions to 'match' the antenna to a 75 ohm coax.  If you removed or bypassed the original amp, there is no way to know what the result would be, but its worth a try.Jim[/QUOTE]