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SMATV systems based on multiswitches are multi-cable installations, with different signals in each cable and long cable sections (up to hundred or so meters, depending on the size of the multifamily building). So, there is a risk of crosstalk effects (inducing interference in neighbor cables) that would deteriorate the performance of such systems. To avoid crosstalk between coaxial cables going in parallel, they should fulfill requirements for A, A+ or A++ class.

2015-08-21