What can be added to the output of a transceiver to increase the transmitted output power?

To boost the radio frequency (RF) signal coming out of a transceiver, an RF power amplifier is connected in-line between the transceiver and the antenna. It takes the lower-power signal from the radio and amplifies it to a higher wattage before it reaches the antenna. The distractors are incorrect because a potentiometer is a variable resistor that would reduce power, and an 'impedance multiplier' is a fabricated term in this context. Remember that while an amplifier increases your output power, it does not improve your ability to hear other stations, which is why a good antenna system is usually a better first investment than an amplifier.