| 摘要 |
<p>Additive and subtractive operations are performed for the frequencies of a repeated combination of the broadcast station frequencies of a plurality of high-level electric field stations, thereby calculating all frequencies that are estimated as spurious frequencies in a reception frequency band. Even if the signal intensity of a received signal the frequency of which has been calculated as a spurious frequency exceeds a given threshold value, a control is performed such that the frequency is not preset.</p> |
