File talk:Electromagnetic-Spectrum.svg

Radio part of spectrum is incorrect or misleading
As it stands, the horizontal lines around the label "Radio, TV" misleadingly suggest that the lower-frequency end of the radio spectrum is 30MHz. This omits over two orders of magnitude of radio spectrum, from 30MHz down through many government, commercial, public and amateur communications bands, the AM (MW) band at about 0.5MHz to 1.8MHz, and, lower than that, the longwave region down to 100kHz or even lower. Yes, there are very-light-grey labels "AM" and "Long-waves" in the lower part of the spectrum, but it's not clear that these are intended to be part of the radio spectrum. Similarly it's not clear that Microwaves and radar are also included in the radio spectrum. Further, for modern (last 20 years) readers, another landmark of interest would be the frequencies used by mobile phone services, also radio. Gwideman (talk) 19:15, 8 April 2020 (UTC)