680 AM

The following radio stations broadcast on AM frequency 680 kHz:[1] 680 AM is a North American clear-channel frequency.[2] KNBR and KBRW share Class A status on 680 kHz. WRKO, WPTF, CJOB and CFTR also broadcast on 680 kHz, with 50,000 watts at all times, but are class B.

In Argentina

LT3 in Rosario, Santa Fe
LU12 in Rio Gallegos, Santa Cruz
LV6 in Mendoza

In Canada

Call sign	City of license	Day kW	Night kW	Transmitter coordinates
CFTR	Toronto, Ontario	50	50	43.214167°N 79.608611°W / 43.214167; -79.608611 (CFTR - 50 kW day, 50 kW night)
CJOB	Winnipeg, Manitoba	50	50	49.653889°N 97.191944°W / 49.653889; -97.191944 (CJOB - 50 kW day, 50 kW night)

In Mexico

XECHG-AM in Chilpancingo, Guerrero
XEFCSM-AM in Mérida, Yucatán

In the United States

Stations in bold are clear-channel stations.

Call sign	City of license	Day kW	Night kW	Transmitter coordinates
KBRD	Lacey, Washington	0.25	0	47.062222°N 122.830278°W / 47.062222; -122.830278
KBRW	Barrow, Alaska	10	10	71.256667°N 156.525556°W / 71.256667; -156.525556 (KBRW - 10 kW day, 10 kW night)
KFEQ	Saint Joseph, Missouri	5	5	39.828611°N 94.805556°W / 39.828611; -94.805556 (KFEQ - 5 kW day, 5 kW night)
KKGR	East Helena, Montana	5	0	46.568889°N 111.908889°W / 46.568889; -111.908889 (KKGR - 5 kW day, off air at night)
KKYX	San Antonio, Texas	50	10	29.500833°N 98.831667°W / 29.500833; -98.831667 (KKYX - 50 kW day, 10 kW night)
KNBR	San Francisco, California	50	50	37.547222°N 122.233333°W / 37.547222; -122.233333 (KNBR - 50 kW day, 50 kW night)
KOMW	Omak, Washington	5	0	48.394444°N 119.533333°W / 48.394444; -119.533333 (KOMW - 5 kW day, off air at night)
KWKA	Clovis, New Mexico	0.5	0.5	34.363333°N 103.218056°W / 34.363333; -103.218056 (KWKA - 0.5 kW day, 0.5 kW night)
WAPA	San Juan, Puerto Rico	10	9.5	18.404444°N 65.947778°W / 18.404444; -65.947778 (WAPA - 10 kW day, 9.5 kW night)
WCBM	Baltimore, Maryland	50	20	39.374167°N 76.858056°W / 39.374167; -76.858056 (WCBM - 50 kW day, 20 kW night)
WCNN	North Atlanta, Georgia	50	10	33.961551°N 84.262776°W / 33.961551; -84.262776 (WCNN - 50 kW day, 10 kW night)
WCTT	Corbin, Kentucky	0.77	0.83	36.9025°N 84.080556°W / 36.9025; -84.080556 (WCTT - 0.77 kW day, 0.83 kW night)
WDBC	Escanaba, Michigan	10	1	45.763056°N 87.094722°W / 45.763056; -87.094722 (WDBC - 10 kW day, 1 kW night)
WGES	Saint Petersburg, Florida	0.69	0.125	27.856667°N 82.623889°W / 27.856667; -82.623889
WHBE	Newburg, Kentucky	1	0.45	38.091944°N 85.682222°W / 38.091944; -85.682222 (WHBE - 1 kW day, 0.45 kW night)
WINR	Binghamton, New York	5	0.5	42.114722°N 75.854444°W / 42.114722; -75.854444 (WINR - 5 kW day, 0.5 kW night)
WISR	Butler, Pennsylvania	0.25	0.05	40.8775°N 79.9025°W / 40.8775; -79.9025 (WISR - 0.25 kW day, 0.05 kW night)
WKAZ	Charleston, West Virginia	10	0.221	38.318611°N 81.541111°W / 38.318611; -81.541111 (WKAZ - 10 kW day, 0.221 kW night)
WMFS	Memphis, Tennessee	8	5	35.222778°N 90.043611°W / 35.222778; -90.043611 (WMFS - 8 kW day, 5 kW night)
WOGO	Hallie, Wisconsin	2.5	0.5	44.889444°N 91.384167°W / 44.889444; -91.384167 (WOGO - 2.5 kW day, 0.5 kW night)
WPTF	Raleigh, North Carolina	50	50	35.793889°N 78.761389°W / 35.793889; -78.761389 (WPTF - 50 kW day, 50 kW night)
WRKO	Boston, Massachusetts	50	50	42.490278°N 71.218056°W / 42.490278; -71.218056 (WRKO - 50 kW day, 50 kW night)

References

http://transition.fcc.gov/fcc-bin/amq?state=&call=&arn=&city=&freq=680&fre2=680&single=1&type=3&facid=&class=&list=1&dist=&dlat2=&mlat2=&slat2=&NS=N&dlon2=&mlon2=&slon2=&EW=W&size=9
"Archived copy". Archived from the original on 2012-04-30. Retrieved 2015-10-01.CS1 maint: archived copy as title (link)

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[1] ttp://transition.fcc.gov/fcc-bin/amq?state=&call=&arn=&city=&freq=680&fre2=680&single=1&type=3&facid=&class=&list=1&dist=&dlat2=&mlat2=&slat2=&NS=N&dlon2=&mlon2=&slon2=&EW=W&size=9

[2] "Archived copy". Archived from the original on 2012-04-30. Retrieved 2015-10-01.CS1 maint: archived copy as title (link)