====== Transmit power ======
**Transmit power** is the power of high-frequency transmitters.

  * **Transmitter output power** is the power emitted at the RF output of a transmitter
  * **Radiated power** or **ERP** (effective radiated power) is the radiated power in relation to a reference antenna, i.e. the antenna gain is included in the calculation here
  * **Transmitter input power** is the power absorbed by the transmitter. The efficiency is calculated from the transmitter input power and transmitter output power.