Talk:Reflected-wave switching

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The article says "its amplitude is added to that of the original pulse". I don't understand.

Is the following true: "The pulse duration is long enough that the original pulse is still present at the receiver when the echo of the pulse bounces back, hence they add in amplitude." Not terribly clearly written, but am I close?

Kentborg 14:51, 10 July 2007 (UTC)