640 AM explained

640 AM - The following radio stations broadcast on AM frequency 640 kHz:^[1] 640 AM is a North American clear-channel frequency.^[2] KFI in Los Angeles, California, KYUK in Bethel, Alaska, and CBN in St. John's, Newfoundland and Labrador, share Class A status of 640 AM.

In Argentina

• LRA24 in Río Grande, Tierra del Fuego
• LU18 in General Roca, Río Negro
• LV15 in Villa Mercedes, San Luis

In Bolivia

• CP 157 in Milluni

In Brazil

• ZYH458 in Itabuna
• ZYH-757 in Goiânia
• ZYI-240 in Vitória·
• ZYI-418 in Alta Floresta
• ZYJ262 in Londrina
• ZYJ-489 in Resende
• ZYJ590 in Natal, Rio Grande do Norte
• ZYK-277 in Porto Alegre
• ZYK-547 in Araraquara
• ZYL-308 in Para de Minas

In Canada

Stations in bold are clear-channel stations.

	City of license	Daytime power (kW)	Nighttime power (kW)	Transmitter coordinates
	Gjoa Haven, Nunavut	0.04	0.04	68.6267°N -95.8725°W
CBN	St. John's, Newfoundland and Labrador	10	10	47.5689°N -52.8125°W
	Richmond Hill, Ontario	50	50	43.1792°N -79.4331°W

In Chile

• CA-064 in Curico
• CD-064 in Temuco

In Costa Rica

• TIQQ in San José

In Colombia

• HJBJ in Santa Marta
• HJR32 in Bucaramanga

In Cuba

• CMLA in Victoria de Las Tunas

In Ecuador

• HCXY1 in Quito

In France

In Guadeloupe

• FFQ in Point-à-Pitre

In Guatemala

• TGW in Guatemala City

In Honduras

• HRNN4 in Tegucigalpa

In Mexico

• XEJUA-AM in Cd. Juárez, Chihuahua
• XENQ-AM in Tulancingo, Hidalgo
• XETAM-AM in Santa Elena, Tamaulipas

In Panama

• HOK 22 in Colón

In Paraguay

• ZP 19 in Coronel Oviedo

In Peru

• OAZ4K in Lima

In the United States

Stations in bold are clear-channel stations.

	City of license	Facility ID	Class	Daytime power (kW)	Nighttime power (kW)	Unlimited power (kW)	Transmitter coordinates
KFI	Los Angeles, California	34425	A	50	50		33.8797°N -118.0131°W
	Thibodaux, Louisiana	36183	B	5	1		29.8514°N -90.9133°W
	Moore, Oklahoma	22190	B	5	1		35.2892°N -97.5022°W
KYUK	Bethel, Alaska	4963	A			10	60.7825°N -161.8833°W
	Atlanta, Georgia	29730	B	50	1		33.7619°N -84.4581°W
	Collierville, Tennessee	6486	B	50	0.48		34.9931°N -89.8994°W
	Fayetteville, North Carolina	8583	B	10	1		35.0794°N -78.9328°W
	Akron, Ohio	43858	B	5	0.5		41.0797°N -81.6458°W
	Royal Palm Beach, Florida	61080	B	7.5	0.46		26.755°N -80.3667°W
	Peotone, Illinois	55089	B	4.4	1.6		41.3011°N -87.8353°W
	Westfield, Massachusetts	9736	B	50	1		42.1794°N -72.7514°W
	Ames, Iowa	29119	B	5	1		41.9928°N -93.6908°W
	Wildwood, Florida	70724	B	0.93	0.86		28.9044°N -81.96°W
	Mount Holly, New Jersey	43904	B	50	0.95		39.9969°N -74.7197°W
	Blountville, Tennessee	29513	B	10	0.81		36.5219°N -82.4236°W

Between 1951 and 1963, the frequency was also one of two used for the United States' CONELRAD emergency broadcasting system, the other frequency being 1240 AM.

In Venezuela

• YVSI in Maracaibo
• YVQO in Puerto La Cruz

Notes and References

1. Web site: AM Query Results.
2. Web site: 2015-12-11. AM Station Classes, and Clear, Regional, and Local Channels. 2020-11-25. Federal Communications Commission. en.