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Question about the Timewave ANC-4
I have a question about how the ANC-4 works. Specifically, it's about
the antennas that you connect to the ANC-4 in order to cancel noise or make a 'phased array'. In some contexts, when noise is a problem, people will say that you want to keep the "noise antenna" that you use with the ANC-4 as small as possible. This is because you want the noise antenna to hear *only* the noise, which will be phased out, and not the target signal, which you don't want to be phased out. The suggestion here is clearly that, if your noise antenna *does* hear the target signal, you're going lose signal along with noise. However, when people use the ANC-4 to establish phased arrays of two or more antennas, this is usually with a couple of serious antennas, widely separated, *both* of which can hear the target signal. Hence my question: When the ANC-4 is connected to two largish antennas, both of which are capable of hearing the target signal, what prevents the desired signal from simply being phased out? Is determining what gets phased out just a matter of carefully adjusting the controls on the ANC-4? Thanks! Steve |
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