Between medium and short wave signal. 1711KHz to 1800KHz. It is a kaleidoscope of radio signals, dominated by a handful of lighthouses and navigational signals that can be heard chirping on the radio, used mainly to provide positioning signals for fishing boats and offshore exploration. 1711khz is the dividing line between medium and short wave.
1800KHz to 2000KHz. This is the 160 m amateur radio band, and most voice traffic uses the SSB (single sideband) LSB (Lower sideband) mode, which provides the best reception during autumn and winter nights