Transmitter power output

In radio transmission, transmitter power output (TPO) is the actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces at its output.[1]

This is not the amount of power that a radio station reports as its power, as in "we're 100,000 watts of rock 'n' roll", which is usually the effective radiated power (ERP).[clarification needed] The ERP for VHF-/UHF-transmitters is normally more than the TPO, for LF-/MF-transmitters it has nearly the same value, while for VLF-transmitters it may be less.


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