User's Manual

III-4
Inside each 500-watt power amplifier, the RF signal enters through the RF Input connector on the
power amplifier enclosure from the modulator or processor. It then passes through an RF
attenuator to limit the output power level of the power amplifier and to help buffer any transients
that may come into the power amplifier. After attenuation, the signal gets preamplified by a driver
pallet before the signal gets split into (2) signals for final amplification. The output of the (2) final
amplifier pallets are combined. Finally, the signal gets filtered with a Bandpass filter and monitored
with a dual directional coupler before heading out to an antenna for broadcast.