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If manufacturers would provide a 50 ohm input impedance for their amps then coax length between the radio and the amp would not matter. Because they do not provide a 50 ohm input impedance the operator is left to use a certain length of coax between the radio and amp in order to transform the impedance to something that is mutually beneficial for the radio's output and the amp's input impedance. When the match is off the radio drops it's drive level to the amp. You don't have that problem with ham amplifiers because the inputs of those amps are tuned for 50 ohms.

This has been beat to death many times on this forum and many others.

[QUOTE="Captain Kilowatt, post: 523242, member: 39"] If manufacturers would provide a 50 ohm input impedance for their amps then coax length between the radio and the amp would not matter. Because they do not provide a 50 ohm input impedance the operator is left to use a certain length of coax between the radio and amp in order to transform the impedance to something that is mutually beneficial for the radio's output and the amp's input impedance. When the match is off the radio drops it's drive level to the amp. You don't have that problem with ham amplifiers because the inputs of those amps are tuned for 50 ohms. This has been beat to death many times on this forum and many others. [/QUOTE]

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