1440 kHz

 

The AM frequency of 1440 kilohertz is defined by the FCC as a Regional Channel Class B or D frequency.  In Idaho, KPTO  is the only station on 1440 .  Across the US, however, there are over 60 stations assigned to this frequency, several in Canada, and several  in Mexico and other North American areas.  It is for this reason stations on this frequency either reduce power or switch to a directional antenna (or both) at night to reduce interference.    Some stations on 1440 operate only during the daytime hours.   (Information updated February  2008)