page_title: KGMZ (AM)
section_title: Transmitter site
hierarchical_section_title: KGMZ (AM) / Transmitter site
caption_attribution_description: English: AM radio station 1550 kHz. Belmont, California, USA. Transmitter site and antennas. Photo taken during King Tide flooding of O'Neill Slough, the high tide waters of San Francisco Bay, on 2015 NOV 26 at 1PM PST local time. The nearest tide station is Redwood City, which indicated water level about +9.6 ft MLLW. The photo shows flood of the transmitter site by the combined waters of the Pacific Ocean, San Francisco Bay, and the local watershed around Belmont Wetlands. It also shows how global climate change has raised the tide in this area, and the proximity of the tidal water to US Highway 101. This photo was taken from the vantage point of the O'Neill Slough - Foster City levee looking southward.
context_page_description: KGMZ is a radio station in San Francisco, owned by Entercom. Established in 1947 as KSMO, the station airs a LGBTQ talk/dance format.
context_section_description: The AM 1550 kHz transmitter site is in the Belmont Wetlands area adjacent to US Highway 101, and is licensed to CBS Radio East, Inc. The power level is 10 kW, and the antenna system is a 3 tower directional array with a tower height of 46.9 meters located at coordinates 37.533093°N 122.275347°W. The antenna system uses an open-wire 5-wire coaxial feedline system, one of the last stations in the US to use such an arrangement. The three red tower lights were a common nighttime landmark since 1947 along highway 101, but the tower lights are no longer illuminated due to an FCC construction permit granted in 2014 in which the station filed a minor coordinate correction of the tower system, which allowed the station to avoid regulatory lighting requirements otherwise required due to the nearby San Carlos Airport. 
  The transmitter site is surrounded by O'Neill Slough, which is part of the San Francisco Bay tidal estuary in a spartina cordgrass area and clapper rail habitat. The site has a history of flooding during storms, and in recent years it is annually flooded during extreme high tide known as king tide, whenever the level of the San Francisco bay reaches approximately +9 feet above MLLW mean lower low water datum at the Redwood City tide station.
caption: AM Radio 1550 kHz transmitter site and antennas near US Highway 101 in Belmont
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