KZM Algebraic Divergence
KZM was an early radio broadcasting station, initially licensed to Preston D. Allen in Oakland, California. It was issued its first license in December 1921, moved to nearby Hayward, California in 1928, and was deleted in mid-1931. History 6XAJ Although KZM was first licensed as a broadcasting station in December 1921, this was actually a relicensing and continuation of operations begun under an Experimental license, 6XAJ, issued to the Preston D. Allen a few months earlier. Allen, described at the time as a "'thoroughbred' radio man in every respects", had extensive radio experience as an amateur operator as well as a radio technician during World War One."Hotel Oakland Has Radio Telephone"
''Pacific Radio News'', October 1921, page 97. He installed 6XAJ atop the Hotel Oakland as an adjunct ...
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Oakland, California
Oakland is a city in the East Bay region of the San Francisco Bay Area in the U.S. state of California. It is the county seat and most populous city in Alameda County, California, Alameda County, with a population of 440,646 in 2020. A major West Coast of the United States, West Coast port, Oakland is the most populous city in the East Bay, the third most populous city in the Bay Area, and the eighth most populous city in California. It serves as the Bay Area's trade center: the Port of Oakland is the busiest port in Northern California, and the fifth- or sixth-busiest in the United States. A charter city, Oakland was municipal corporation, incorporated on May 4, 1852, in the wake of the state's increasing population due to the California gold rush. Oakland's territory covers what was once a mosaic of California coastal prairie, California coastal terrace prairie, oak woodland, and north coastal scrub. In the late 18th century, it became part of a large ''rancho'' grant in the c ...
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