A digital television broadcasting signal relay transmitter apparatus for performing relay transmission of a digital television broadcasting signal in a television broadcasting frequency band, comprising: a reception unit which receives the digital television broadcasting signal; an A/D converter which converts a signal received by the reception unit into a digital signal and outputs the digital signal; a digital filter which acquires a tap coefficient which determines filter characteristics, applies filtering processing based on the filter characteristics determined by the tap coefficient to a signal output from the A/D converter, and outputs a signal obtained by the filtering processing; an amplitude equalizing digital filter which acquires an amplitude equalizing tap coefficient which determines filter characteristics, applies filtering processing based on the filter characteristics determined by the amplitude equalizing tap coefficient to a signal output from the digital filter, and outputs a signal obtained by the filtering processing; a characteristics estimation unit which detects a deviation of an amplitude within the frequency band occupied by the signal output from the amplitude equalizing digital filter, generates the amplitude equalizing tap coefficient based on the detected deviation, and output the generated amplitude equalizing tap coefficient to the amplitude equalizing digital filter; a D/A converter which converts a signal output from the amplitude equalizing digital filter into an analog signal; a transmission unit which transmits a signal output from the D/A converter; a channel acquisition unit which acquires a channel code which identifies a frequency band occupied by the digital television broadcasting signal; a characteristics calculation unit which obtains, based on the channel code which is acquired by the channel acquisition unit, filter characteristics in which an attenuation frequency band is provided in a frequency band which is different from a plurality of designated frequency bands each of which is designated by the channel code; and a characteristics setting unit which generates the tap coefficient based on the filter characteristics obtained by the characteristics calculation unit and outputs the tap coefficient which is generated to the digital filter. a reception unit which receives the digital television broadcasting signal; an A/D converter which converts a signal received by the reception unit into a digital signal and outputs the digital signal; a digital filter which acquires a tap coefficient which determines filter characteristics, applies filtering processing based on the filter characteristics determined by the tap coefficient to a signal output from the A/D converter, and outputs a signal obtained by the filtering processing; an amplitude equalizing digital filter which acquires an amplitude equalizing tap coefficient which determines filter characteristics, applies filtering processing based on the filter characteristics determined by the amplitude equalizing tap coefficient to a signal output from the digital filter, and outputs a signal obtained by the filtering processing; a characteristics estimation unit which detects a deviation of an amplitude within the frequency band occupied by the signal output from the amplitude equalizing digital filter, generates the amplitude equalizing tap coefficient based on the detected deviation, and output the generated amplitude equalizing tap coefficient to the amplitude equalizing digital filter; a D/A converter which converts a signal output from the amplitude equalizing digital filter into an analog signal; a transmission unit which transmits a signal output from the D/A converter; a channel acquisition unit which acquires a channel code which identifies a frequency band occupied by the digital television broadcasting signal; a characteristics calculation unit which obtains, based on the channel code which is acquired by the channel acquisition unit, filter characteristics in which an attenuation frequency band is provided in a frequency band which is different from a plurality of designated frequency bands each of which is designated by the channel code; and a characteristics setting unit which generates the tap coefficient based on the filter characteristics obtained by the characteristics calculation unit and outputs the tap coefficient which is generated to the digital filter.