-TDT callsign suffixes. Analog stations, which existed until December 31, 2016, had -TV callsign suffixes. The equivalent of low power or translator service in Mexico is the equipo complementario de zona de sombra, which is intended only to fill in gaps between a station's expected and actual service area caused by terrain; a station of this type shares the callsign of another station. In analog, these services often were broadcast on the same or adjacent channels to their parent station, except in certain areas with tight packing of television stations (such as central Mexico). In digital, these services usually operate on the same RF channel as their parent station, except for those with conflicting full-power applications (XHBS-TDT Cd. Obregón, Son., channel 30 instead of 25), in certain other cases where it is technically not feasible (XHAW-TDT Guadalupe, NL, channel 26 instead of 25) or to make way for eventual repacking on upper UHF (XHPNW-TDT has four shadows on 33, its post-repacking channel, instead of 39). Equipos complementarios can relay their parent station, or a station that carries 75% or more of the same programming as its parent station. Stations of either type may have unusually low or high effective radiated powers. XHSMI-TDT in Oaxaca is licensed for two watts in digital. The highest-powered shadows are XEQ-TDT Toluca and XHBS-TDT Ciudad Obregón, both at 200 kW. FCC service table The United States Federal Communications Commission lists the following services on their website for television broadcasting: See also Call signs in North America - How call signs and classes are used in North America ITU prefix - How callsigns and classes are used worldwide Low-power broadcasting Class A television service References External links FCC AM classes FCC FM classes FCC LPTV Facts FCC Class-A TV Information Broadcast engineering Broadcast station classes, North America