160-meter band
(重定向自Top band)
Just above the mediumwave broadcast band, 160 meters refers to the band of radio frequencies between 1800 to 2000 kHz, which is the lowest radio frequency band allocated for use by amateur radio in most countries. Older amateur operators often refer to 160 meters as the Top Band. It is also sometimes referred to as the "Gentleman's Band" in contrast to the often-freewheeling 80- and 20-meter band activity.