User's Manual

III-2
Principle of Operation
The TAU-500 power amplifier supplies a 500-watt peak video signal with an aural carrier level 10 to 13
dB below visual carrier (dBc) on any of the UHF television channels 14 through 69. Please note that
channel selection must be made at time of order, as the transmitter or translator is calibrated and
tested to the channel requested and is not field tuneable. The TAU-500 power amplifier is a modular
solid-state 500-watt broadcast amplifier utilizing readily available RF components wherever possible,
thus enhancing the serviceability of the equipment.
The TAU-500 is comprised of a TECH-30U driver pallet and (2) P300 final pallets that are combined to
create 500 watts of peak visual power in addition to the aural carrier power.
The TAU-500 features ultra linear amplification and individual channel RF output bandpass filtering.
The amplifier modules are stable for high reliability and long service life.