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The power aplifier modules provide medium/high RF power trough a discrete frequency band, they are already matched to an input/output impedance of 50Ω. It is possible to use the control pin to obtain a variation of output power, this pin is available on almost all models, or it is possible to act on the power supply of the first stage. Unless for special types they are all suitable to amplify CW or FM or FM TV signals.
Example of connection and internal diagram of a power module