Shortwave is a see also of longwave. Longwave is a see also of shortwave. In context|of [[radio]] [[wave]]s|lang=en terms the difference between longwave and shortwave is that longwave is (of radio waves) having a wavelength of greater than 1000 meters while shortwave is (of radio waves) having a wavelength of approximately 10 to 200 meters. In context|of radio [[equipment]]|lang=en terms the difference between longwave and shortwave is that longwave is (of radio equipment) capable of transmitting or receiving signals at such a wavelength while shortwave is (of radio equipment) capable of transmitting or receiving signals at such a wavelength. As adjectives the difference between longwave and shortwave is that longwave is (of radio waves) having a wavelength of greater than 1000 meters while shortwave is (of radio waves) having a wavelength of approximately 10 to 200 meters. As a noun shortwave is any frequency, having a wavelength between approximately 10 and 200 meters.