- Transmitter power output
In
radio transmission , transmitter power output (TPO) is the actual amount of power (inwatt s) ofradio frequency (RF) energy that atransmitter produces at itsoutput .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 theeffective radiated power (ERP). The transmitter power output is normally less than the ERP.The
radio antenna 's design "focuses" the signal toward thehorizon , creatinggain and increasing the ERP. There is also some loss (negative gain) from thefeedline , which reduces some of the TPO to the antenna by both resistance and by radiating a small part of the signal.The basic
equation relating transmitter to effective power is:::
ee also
*
effective radiated power
*nominal power
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