User's Manual

III-2
Principle of Operation
The TAU-1000 power amplifier supplies a 1000-watt peak video signal with 10% aural power 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-1000 power amplifier is a modular solid-state 1000-watt broadcast amplifier
utilizing readily available RF components wherever possible, thus enhancing the serviceability of the
equipment. The TAU-1000 features ultra linear amplification and individual channel RF output
bandpass filtering. The amplifier modules are stable for high reliability and long service life.
The amplification of the TAU-1000 is comprised of (2) TAU-500 500-watt power amplifiers. Firstly, the
output of the modulator or processor gets split into (2) RF signals of equal amplitude. Each output of
the 2-way power divider is then fed into a TAU-500 Power Amplifier. Finally, the outputs of each TAU-
500 are combined to generate 1000-watts of peak visual power in addition to an aural carrier, as seen
in the TAU-1000 block diagram.