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The 630-meter (or 600-meter) amateur radio band is a frequency band allocated by the International Telecommunication Union (ITU) to amateur radio operators, and it ranges from 472–479 kHz, or equivalently 625.9–635.1 meters wavelength.
On May 14, 1963, at 6:30 am, CHED switched to 630 kHz. Beginning in 1959, CHED aired a Top 40/CHR format. [1] Jerry Forbes ran the first 630 CHED Santas Anonymous in 1955. The charity provided 600 toys to children in its first year and is still run annually as of 2020. In the latest edition, the toy drive provided toys to over 20,000 children. [2]
The following radio stations broadcast on AM frequency 630 kHz: 630 AM is a regional U.S. broadcast frequency. [ 1 ] 630 kHz is a Philippine clear-channel frequency used by NTC. DZMM share Class A status at 630 kHz and being defunctional because of legislative franchise lapsed
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630 metres – 472–479 kHz; Just below the commercial AM broadcast band and the maritime radio band. 160 metres – 1 800–2 000 kHz (1.800–2.000 MHz) Just above the commercial AM broadcast band. Allocations in this band vary widely from country to country; it was formerly shared with the largely defunct Loran-A radionavigation system.
The 630 kHz frequency is perhaps best known as the longtime home of KDWB from 1959 until 1986. For almost two decades, KDWB was a heated rival of the original WDGY , located at 1130 kHz. When WDGY dropped its call letters in 1991 to become KFAN, KDWB's owner adopted the abandoned WDGY call sign for 630 kHz, where it remained until 2008.
Stations on the AM expanded band, 1610 kHz to 1700 kHz, are limited to 10 kW days and 1 kW nights, non-directionally. Several expanded band stations operate DA-N or even DA-2 with up to 10 kW during all hours, after providing proof that such operations will not cause co- or adjacent-channel interference.
KYFI (630 AM) is a Conservative Christian radio station broadcasting from St. Louis, Missouri.KYFI is owned and operated by Bible Broadcasting Network, Inc. [2] KYFI's transmitters are located near Gateway Motorsports Park in Madison, Illinois.