A wireless sending apparatus, comprising: a change judging means to judge whether changing an interference causing avoiding transmission means (104, 105), which is applied to each predetermined frequency-domain group of a sending signal, on the basis of predetermined change judging information being any one or both of: interference causing avoiding requiring information, the interference causing avoiding requiring information being the power density of the sending signal or a distance in the frequency domain from the frequency band in which the interference should be avoided from being caused; and transmission line multi-path delay information which are needed; and wherein the change judging means is configured to carry out the judgement on the change on the basis of any one or both of the interference causing avoiding requiring information, and the transmission line multi-path delay information, and to output the judgement as a change judgement result; a signal separating means to separate the sending signal into each the group on the basis of the change judgement result; a first interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce leak power, which leaks outside a sending frequency band, by a symbol waveform shaping means which shapes a waveform of a symbol in the time domain; a second interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce the leak power, which leaks outside the sending frequency band, by a leak power suppressing signal generating means to generate a signal for suppressing the leak power, which leaks outside the sending frequency band, up to a required level; and a synthesizing means to synthesize the sending signals which the first interference causing avoiding transmission means and the second interference causing avoiding transmission means carry out the interference causing avoiding process to respectively and supply respectively, wherein the sending signal is sent per the group by use of any one of the first interference causing avoiding transmission means and the second interference causing avoiding transmission means. a change judging means to judge whether changing an interference causing avoiding transmission means (104, 105), which is applied to each predetermined frequency-domain group of a sending signal, on the basis of predetermined change judging information being any one or both of: interference causing avoiding requiring information, the interference causing avoiding requiring information being the power density of the sending signal or a distance in the frequency domain from the frequency band in which the interference should be avoided from being caused; and transmission line multi-path delay information which are needed; and interference causing avoiding requiring information, the interference causing avoiding requiring information being the power density of the sending signal or a distance in the frequency domain from the frequency band in which the interference should be avoided from being caused; and transmission line multi-path delay information which are needed; and wherein the change judging means is configured to carry out the judgement on the change on the basis of any one or both of the interference causing avoiding requiring information, and the transmission line multi-path delay information, and to output the judgement as a change judgement result; a signal separating means to separate the sending signal into each the group on the basis of the change judgement result; a first interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce leak power, which leaks outside a sending frequency band, by a symbol waveform shaping means which shapes a waveform of a symbol in the time domain; a second interference causing avoiding transmission means to input the sending signal which is separated into each the group, and to reduce the leak power, which leaks outside the sending frequency band, by a leak power suppressing signal generating means to generate a signal for suppressing the leak power, which leaks outside the sending frequency band, up to a required level; and a synthesizing means to synthesize the sending signals which the first interference causing avoiding transmission means and the second interference causing avoiding transmission means carry out the interference causing avoiding process to respectively and supply respectively, wherein the sending signal is sent per the group by use of any one of the first interference causing avoiding transmission means and the second interference causing avoiding transmission means.