Tigerbangs has summarized two or three complex topics concisely and as accurately as I could hope to. His general advice of elevating the antenna would provided the benefit of getting further from interference sources such as certain types of lighting fixtures and motors.
Regarding an amplifier, I would add it only if it proves necessary. The benefit of an amplifier comes at the cost it's imperfections. All amplifiers will add some noise to the signal and will distort the desired signals to some degree. They have their place.
Last edited by GroundUrMast; 22-Oct-2010 at 7:40 PM.
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