Receiver and systems design requirements for adjacent- and split-channel operation

A good engineer is never sure about anything in a final, absolute sense. A good engineer is a complicated animal who is constantly faced with the necessity for making compromises. While he is never sure of anything in an absolute sense, he damn well knows what he knows, provided you accept a few dozen odd quslifications. He is a practical guy, who is as consistently successful as the accuracy of his disciplined guesses. In the constant determination of the question of degree, he must include factors of safety and standards to insure good performance while not over-protecting to the point of impractical complexity and uneconomical production costs.