This is the US Station History section of
The Broadcast Archive

Maintained by:
Barry Mishkind - The Eclectic Engineer
Assisted by: Peter Haas and Donald Wilson

Last Update 6/2/10


A List of current US Clear Channel Stations

SOME HISTORY                                                              

The original purpose of clear channel stations in the US (as opposed to the company of the same name) was to provide coverage, especially at night, to the "white areas" of the US, where there were no stations at all. Clear Channel stations were known as Class I stations.

Peter Haas notes that "originally, there were eight national regions.


"Each Region, except the Western Region which included the Mountain and far West states and also the Territories which would nearly a quarter-century later become states, then had about 18,000,000 residents according to the most current U.S. Census (I know this because I checked the regions against the published U.S. Census stats).

"The West, with a much greater land area, spread over a great many more time-zones, and with a great many more states, had fewer than 18,000,000 residents (this region also included the then Territories of Alaska and Hawaii, also what would eventually become Guam, but for practical purposes this region included only those states, territories and protectorates which were east of the 180 degree meridian, as modified for geo-political reasons, and included all areas to the East, stopping an what might be called the "Front Range", and which included Denver, but did not include Texas, which was in the southern region).

"So, at least for the seven districts which were in the East, Midwest  and South, there was an "even-handed" apportion of clears v. population.


"Each region with about 18,000,000 residents got five internationally cleared channels (Canada and Mexico were not then a party to this scheme. They resented it - and we would eventually regret it). There were some anomalies, of course, such as the region which had the city with the largest population - and that city received three clears. But this Region also included New England (it got one clear) and upstate (it got one clear).

"Yet, a small city which was immediately adjacent to this largest city, but which was - somewhat miraculously - in another region, also got two clears. This meant that its entire region received only three clears which were not also - de-facto - in this largest city, and this de-facto sub-region thereby got five clears (it has six today, but only by the band expansion which occurred in 1941).


"Additionally, because of the notoriously poor selectivity of the pre-"Super-Het" receivers, the minimum station-to-station separation within the same extended market area (possibly including multiple cities and perhaps even multiple states) was 50 kHz. This is why there is 50 kHz between 710 kHz and 760 kHz (this station is now on 770 kHz, with the insertion of a new Canadian clear on 740 kHz), both of which were allocated to Newark, NJ, and 50 kHz between 660 kHz and 710 kHz (660 kHz was allocated to NYC, which was in an adjacent region).

"There is, of course, 50 kHz between 760 kHz and 810 kHz, but 810 kHz was, then, really on 790 kHz and 790/810 kHz was assigned to Region Eight, and, specifically, to Oakland, so 790/810 kHz cannot be considered to be anything except a Western Region clear, not withstanding General Electric's gerrymandering (some might call it "generalmandering") of the districts.

"And there was, indeed, 50 kHz between 810 kHz and 880 kHz (which was, then, 860 kHz, before the insertion of new, foreign clears at 800 and 860 kHz, thereby forcing 860 kHz to 880 kHz. But we know that 790/810 kHz was originally allocated to Oakland).


"Some stations which were then sharing frequency and time with others, started to resolve matters. For example:

"These give us what we have today, an ill-conceived system of "demand allocation" in which the wishes of the empowered elite of the East overpowered the needs of the under-served West - the strategic issues of the forthcoming decades (WW-II, in particular) and the almost stratospheric expansion of the population of the West be darned!

"Where was the South, when this scheme was developed in Washington?  Asleep at the wheel? Perhaps. The South got two to Texas (WBAP and WOAI), one to Georgia (WSB), one to Tennessee (WSM) and one to Missouri (KMOX), all of which were Southern/Slave states, and which received their very fair share of five clears. (I suppose the South really received six, counting Kentucky (WHAS))."


Originally, the signals were protected as far as they reached. The original breakdown of the I-A channels reduced that to 1000 miles, later reduced to 900 and then 850 miles. Some co-channel I-Bs (1170 and 1500, for example) are as close as 850 miles.


In the 1950s and 1960s, there was an effort to license "Superpower" stations, to maintain the clear channels - 500 kW and 750 kW stations.  Many plans were drawn, but the FCC declined to allow anything about 50 kW. Regional treaties now limit AM to 100 kW, but again, the FCC has declined to lift the 50 kW limit in the US.


The North American Radio Broadcasting Agreement was negotiated and put into effect in March 1941. In addition to causing a great number of stations to move their frequency, the AM band was extended to 1600 kHz and interference Rules adopted. Under NARBA, stations were designated in four classes: Class I, Class II, Class III and Class IV.  Class III was for "regional stations," limited to 5 kW, and Class IV was a "local" channel, 250 Watts day and night.

Class I-A refers to the dominant station on a frequency. They are always 50 kW and nominally non-directional - although several of the stations directionalized on purpose in order to use power that might go into the oceans, redirecting it over land. 

Class I-B stations were required to protect other occupants of the channel and normally used directional antennae to accomplish this task. 

Class I-N stations were based in Alaska or Hawaii, and operated with 10 kW or more, non-directionally.

There were also some Class II stations on some of the channels, but they were completely limited by the Class 1 stations' contours, and often were daytime only. Additionally, there are several channels that were assigned as clear channels to Mexico, Canada, and the Bahamas.


The NARBA (1941) treaty was superceded by the Regional Agreement for the Medium Frequency Broadcasting Service in Region 2 (

aka "Rio") in 1983 - to a point. Some countries, including the USA, continue to hold to NARBA provisions, others key on the Rio agreement. (There are also bilateral treaties with Mexico and Canada, that were also put in place in the mid-1980s.)

Following Rio, the FCC redefined the classes of stations as:


Peter Haas notes: "My list of U.S. Class I-A Clears, as confirmed from examining the NARBA treaty documents, contains: 640, 650, 660, 670, 700, 720, 750, 760, 770, 780, 820, 830, 840, 870, 880, 890, 1020, 1030, 1040, 1100, 1120, 1160, 1180, 1200 and 1210, since 1941. I call these 'Class I-A Clears in-fact.' There were 25 of these in number.


"Additional United States Class I-A clears, which I call "de-facto Class I-A Clears," as these were once clear, but were broken down by a variety of means, including State Department actions, actions by the owners, actions by the FCC prompted by political pressure from highly-placed parties, etcetera. De-facto Class I-A Clears once included at least: 680, 710, 810, 850, 1000, 1050, 1170, 1190, and possibly others. (All of these are within or immediately adjacent to a group of Class I-A Clears in-fact, which were assigned solely to the United States until new Canadian and Mexican Class I-A Clears were forced into the broadcast band at 740, 800, 860, 900, 990, 1010, 1050, 1220 and various other frequencies, thereby displacing other stations by +10, +20, +30, +40, or -10 kHz.)

THE 1-Bs

"Those clears which are presently on 1500 through 1530 (formerly on 1460 through 1490) were not de-facto Class I-A Clears as these were not Clears at all, but were so-called "high-powered Regionals." On account of their very high frequencies these stations were allowed the 10 kW power which was otherwise reserved for a Clear, whereas conventionally-powered Regionals were otherwise limited to 5 kW.

"Subsequent to 1941, these "high-powered Regionals" were converted to Class I-B Clears, and additional Clears and Regionals were added above 1530, with 1540 becoming a Class I-A Clear (Bahamas), 1550 becoming a Class I-B Clear (Canada and Mexico), 1560 becoming a Class I-A Clear (Cuba, but this was abrogated after Castro's rise, and was taken by the United States as Class I-B Clears), 1570 becoming a Class I-A Clear (Mexico), and 1580 becoming a Class I-A Clear (Canada), while 1590 and 1600 became conventionally-powered Regionals."


Here is a look at what most people would consider the "Flamethrower" stations of the US. Some of the comments are from Peter Haas, who shares his observations on the assignments and how they came to be the way they are today.

Afterward is another listing of additional 50 kW stations in North America, many of which were squeezed onto the band with as many as 12 towers and extremely narrow beamwidths.  

KFI, Los Angeles - I-A KFI, built by Earl C. Anthony, was a pioneer station in LA.
KFI tour         KFI history
Remembering KFI
At one time, all alone at night - like most of the clear channel stations - KFI now shares the nighttime skies in North America with over two dozen stations, including a Canadian I-B class station (grandfathered at 10 kW ND-U, all hours).

WSM, Nashville, TN - I-A Home of the Grand Ole' Opry, and proud owner of a distinctive Blaw-Knox diamond shaped antenna.
WSM Tour     WSM history 
WSM once applied for a power of 750 kW. The FCC declined to authorize it.

WFAN, New York - I-A Originally WEAF, and later WNBC, this station started as the AT&T station in New York.
WFAN Tour     WFAN history

WSCR, Chicago - I-A Went on the air in March 1922 as WGU, but changed to WMAQ to avoid confusion with WBU, Chicago.
WSCR Tour      WSCR/WMAQ history

San Francisco - I-A
KNBR operates a Franklin style antenna, designed to reduce fading.
KNBR Tour         KNBR history
  WKRO, Boston, MA  
WPTF, Raleigh, NC WPTF Tour        WPTF history
Eastern interests caused the "breakdown" on this channel, with 50 kW (DA-N, but unlimited) operations in Raleigh and Boston.

690 Canadian Class I-A clear.
WOKV, Jacksonville, FL One of the Brennan home-brew 50 kW transmitters made this a smoking signal.
WAPE Tour         WAPE history
XETRA, Tijuana, BC - I-B 77 kw daytime, 50 kW-N
XETRA Tour          XETRA history

WLW, Cincinnati, OH - I-A WLW was a true US "Flamethrower," operating at 500 kW (the highest power for any US AM radio station) from 1934-1939.
WLW history page    WLW Picture Tour

710 Although shared, there are no foreign Class A's on 710 (hence it isn't "shared" in the conventional meaning of that term).
WOR, New York - I-B WOR is directional simply because WOR originally utilized a "long wire," which inherently has a Figure-8 pattern.

A Canadian de-facto Class II-B was assigned, thereby breaking down 710 into a de-facto Class I-B channel from a de-facto Class I-A channel. The Canadian is/was CKVM. After WOR moved to a directional antenna, it was required  to protect CKVM, and, hence, WOR has little, if any, secondary service north of the U.S.-Canadian border, around Lake Ontario. This is the protection afforded to CKVM. Before, WOR was a de-facto Class I-A.

WOR Pictures
KSPN, Los Angeles - II-B Originally KRLO, then KEJK, KMPC, KDIS and KTZN. 

Went on-air before WW-II with only 5 kW as a de-facto Class II-B, but increased to 50 kW/10 kW DA-N post-war.

KMPC sought I-B status after WWII, but was unable to show it would receive adequate protection.

KIRO Seattle, WA - I-B Protects KMPC
WAQI, Miami, FL II-B Originally WFTL, then WGBS, 

WGN, Chicago - I-A The Tribune station went on the air as WEBH or WDAP, depending upon whose history you read.

730 This is a Mexican Clear

740 CHWO, Toronto - 50 kW This is a Canadian Clear Channel
KCBS, San Francisco - I-B

WSB, Atlanta, GA - I-A The first broadcast station licensed in the SE.

WJR, Detroit, MI - I-A
WJR Tour

770 This is an interesting channel. Long legal wars were fought over the allocation.
WABC, New York - 1-A Originally WJZ (Newark, NJ). 

WABC never installed the DA which the FCC requested in order to protect KOB's STA operation on 770, therefore it never gave up its dominant position on 770.

KKOB, Albuquerque, NM - II-A Was on 1180 as a daytimer/shared-timer, with KEX, later moved to 1030/770 (at various times; 1030 was eventually determined to be "technically infeasible").

KOB challenged WABC at the Commission level and in Federal court, but lost at the SCOTUS. Finally reallocated as a Class II-A, it is the only Class II-A not on the original Class II-A List. 

The decision was very important, as by the time this issue was settled, KSWS was already on-air as a Class II-A, and the Commission/SCOTUS could, rightfully so, say that New Mexico already had a Class I-type station (Class II-As are really de-facto Class I-Ns, except that they are in the 48 states, not in the "non-contiguous states," which is what the Class I-N designation means) and, therefore, there was no need for KOB to be a Class I. Game over! 

Consequently, WABC retained its Class I-A designation.

Today, KKOB uses a 230 Watt synchronous transmitter in Santa Fe, NM

KTTH, Seattle, WA - II-B Originally, as KXA, it was a limited time station, although it sought Class I-B status. However, the courts would not give in to KXA. Now 50 kW/5 kW, DA-2

WBBM, Chicago - I-A

800 Mexican clear channel.
XEROQ, Ciudad Juarez, Chihuauah, Mexico Previously XELO, it was 150 kW at one time.
CKLW, Windsor, Ontario (Detroit).

WGY, Schenectady, NY - I-B WGY was a de-facto Class I-A, which is why it is 50 kW ND-U. Broken down to a de-facto Class I-B by the addition of San Francisco's 810, first, and, later, by KCMO and a few others.
KCMO, Kansas City, MO -
Always a Class II-B. Formerly 10 kW nights, now 5 kW nights. Strange.
KGO, San Francisco - I-B KGO was co-owned with WGY, so General Electric simply elected to break down WGY, thereby freeing KGO to move from 960 to 810, thereby boosting its class from a de-facto Class III-A to a de-facto Class I-B.


810 was broken down by General Electric, which moved the 50 kW ND-U operation to Schenectady and downgraded the Oakland (now San Francisco) operation to 7.5 kW (was not restored to 50 kW until much later - and then directionalized.

WBAP, Dallas - I-A Home of the famous share time with WFAA, 820 booms out of the Dallas/Ft. Worth area.

At one time, 820 was a tenant on WFAA/570's towers (the middle one?). The tenancy arrangement was very expensive, so Belo obtained its own site.

WCCO, Minneapolis, MN - I-A The big one in the Midwest.

Formerly CBS O&O under the "seven station rule." Again owned by CBS.

WCCO History      WCCO Tour
At one point, WCCO proposed 750 kW, but with a four tower array sending most power to the SW (thereby covering most of the nation which did not have Class I-As - N Dakota, S Dakota, Montana, Wyoming, Idaho, Nevada, 
Kansas, Oklahoma, Arkansas, and among others).

WHAS, Louisville, KY - I-A

KOA Denver, CO - I-B KOA was a de-facto Class I-A, which is why it is 50 kW ND-U. Broken down to a de-facto Class I-B by the addition of Boston's 850, first, and, later, by many others.

Today, with a "too tall radiator" KOA actually runs about 35 kW TPO.

WHDH Boston, MA - II-B
850 was broken down by Eastern interests, with a 50 kW U operation at 
Boston, and numerous others with 10 kW and 5 kW.  In turn, this break down allowed a Mexican I-B to be fitted in, and which is now 100/50 kW DA-N.

860 Canadian Class I-A

WWL New Orleans, LA - I-A

WCBS New York - I-A Originally WAGH, then WBOQ, WABC, then WCBS.

WLS Chicago, IL - I-A
WLS Tour

900 Mexican Class I-A

940 Canadian/Mexican clear

990 Canadian Class I-A clear.

1000 This channel is shared with Mexico, with the Mexican "grandfathered" at 10 kW ND
WMVP Chicago, IL - I-B This station used to be WCFL, a station owned by a labor union. 


KOMO Seattle, WA - I-B
The Mexican I-B was grandfathered at 10, then 20 kW nights, but now 
operates with 100 kW days.

1010 Canadian Class I-A clear

KDKA Pittsburgh, PA - I-A Among the very first broadcast stations in the US.
KINF Roswell, NM - II-A  The first II-A to be built - then KSWS. This is the station that began the breakdown of the Clear Channels. The array seems very weird for a Class II-A, but it was necessary in order to achieve zero kW towards KDKA, while maintaining *at least 10 kW* towards every other bearing within the Southwest.

The very existence of KSWS, and its Class II-A signal, which is considered by the FCC, and by the SCOTUS, to be a "station of the Class I type", was the central reason why KOB's law suit vs. WABC was dismissed, with an order that it abandon its de-facto Class I-B operation, and that it refile as a Class II-A ... the only Class II-A station not originally on the Class II-A List. 

KTNQ Los Angeles, CA - II-B A late entry ... originally a daytimer limited by KDKA

KGBS (predecessor of KTNQ) was 50 kw DA-1 L-KDKA, and it always operated with its licensed day (DA-1) facilities from midnight to 5 am Sunday, Pittsburgh time, which was 9 pm to 2 am Sunday/Monday, L.A. time.

KGBS, became a Class II-B in the seventies, after KSWS, the first Class II-A to be licensed, had been operating 50 kW-D, 10 kW-N, DA-2, for about ten years. KSWS' new 50 kW night DA, paid for by Storer, was especially designed so that it sent no more than 10 kW towards KGBS/KTNQ, nights.

Incredibly, Storer was also considering selling the 50 DA-1 L-KDKA station to a religious broadcaster for low $$$, but that prospective buyer tried to get a lower price by bad-mouthing Storer publicly, so Storer pulled out and decided, instead, to take the extra time it took to do the 50/50 DA-2 upgrade, which also included KSWS.

WBZ Boston, MA - I-A

WHO Des Moines, IA - I-A
WHO Tour

XEG Monterrey, Mexico - I-A

1060 Shared with Mexico
KYW Philadelphia, PA 1-B

1070 Shared with Canada.
KNX Los Angeles, CA - I-B KNX was a de-facto Class I-A, on 1050, which is why it is 50 kW ND-U. It was broken down to a Class I-B when it was moved from 1050 to 1070.

The Canadian is, of course, a Class I-B, and is also 50 kW ND-U. Perhaps the only dual 50 kW ND-U allocations.

Steve Blodgett's KNX Site is currently down.
The Canadian 1070 (CBA) is now silent (after nearly 70 years of operations with 50 kW ND-U).

WTIC Hartford, CT - I-B
KRLD Dallas - I-B KRLD Tour
KWJJ Portland, OR - II-B

1090 Shared with Mexico
WBAL Baltmore, MD - I-B
KTHS Little Rock, AR - I-B Originally at Hot Springs, AR as a II-B, Perhaps the last 1-B added in the US.
KPTK Seattle, WA - II-B
XEPRS, Rosarito, BC- I-N

WTAM, Cleveland, OH - I-A  


KJBS, San Francisco The granddaddy of weird allocations. For a time was 50 kW daytime, 1 kW (from a different site across the bay in San Francisco itself) from sunset until 9 PM PT, then back to 50 kW from 9 PM PT (midnight at WTAM) until sunrise.

WBT Charlotte, NC - I-B WBT was a de-facto Class I-A. Purchased by CBS. Broken down to a de-facto Class I-B by the addition of KFAB, which had been a share-timer on 780. Sold by CBS before the DA was installed. Operated 50/10 kW ND-U until the DA was installed after the war.
KFAB Omaha, NE - I-B Was a share-timer, on 780. Moved to 1110 in order for CBS' WBBM to become a Class I-A.
(KRLA) Pasadena, CA - II-B Ok, so it is now KDIS ... and just a faded memory of the legacy of KRLA. 
KRLA Tour       KRLA History 

KMOX St. Louis, MO 1-A KMOX Tour      KMOX History

1130 U.S.-Canadian clear
KWKH Shreveport, LA I-B
WBBR New York, NY I-B
CKWX Vancouver, BC I-B This is the only Canadian Class I station not formerly owned by CBC in modern times (CJBC was privately owned, in pre-war times, however).

1140 Shared with Mexico
WRVA Richmond, VA 1-B

KSL Salt Lake City, UT 1-A

WWVA Wheeling, WV 1-B
KVOO Tulsa, OK 1-B

WHAM Rochester, NY 1-A

WOWO Ft. Wayne, IN - I-B Originally a powerhouse on the 1190 channel, WOWO was purchased by ICB, owner of WLIB. Power reduced to 9.8 kW, nights, which effectively broke this station down to a Class II-B. Was a de-facto Class I-A until co-owned KEX was moved from 1180 to 1190.
WLIB New York, NY - II-B Formerly a daytimer, became a fulltimer with the breaking down of WOWO.
KEX Portland, OR - I-B Was a share-timer, with KOB, on 1180. Became a de-facto Class I-B when Westinhouse's WOWO was broken down to a Class I-B

WOAI San Antonio, TX - I-A

WCAU Philadelphia, PA - I-A

1220 Mexican Class I-A clear

WTOP Washington, DC 1-B
KSTP Minneapolis, MN 1-B

Boston Was WMEX.
WLAC Nashville, TN 1-B
KGA Spokane, WA 1-B

WWKB Buffalo, NY 1-B Originally WKBW
KOMA Oklahoma City, OK 1-B

WSAI Cincinnati, OH I-B Still licensed to use ND-D from LSR Cincinnati to LSS Sacramento.

This was the payback for allowing KFBK to move from a Class IV to a Class I-B, whereas before WKCY had 1530 all to itself.

KFBK Sacramento, CA I-B Boasts a very Efficient Franklin Antenna

1540 Shared with the dominant station, ZNS-1, Bahamas
KXEL Waterloo, IA I-B
The Bahamas was forced by "Rio" to increase to 50 kW (from 10 kW, or possibly 7.5 kW). It installed a two-tower DA to protect KXEL.

1550 Shared Canadian/Mexican. The Canadian is 10 kW DA-1. The Mexican is grandfathered at 10 kW, believed to be operating 100 kW/10 kW ND

WQXR New York, NY I-B
KNZR Bakersfield, CA I-B Grandfathered at 10 kW N. Presently operating 25 kW-D, 10 kW-N, DA-N.

1570 Mexican Class I-A

1580 Canadian Class I-A
When Canada was forced by "Rio" to increase its Class I-A on 1580 (originally licensed to Chicoutimi, PQ) to 50 kW (from 10 kW), it installed a three-tower DA which protected the a Marathon, FL, operation on 1580.


Donald Wilson shares these additional stations which run 50 kW signals or, in the case of international stations, notified power levels. Some others share the Clear Channel with at least 10 kW.

Each station's current class is shown as [A] or [B] after their previous class, for some stations an earlier class is shown in note text. 


540 - Canadian and Mexican Clear Channel

CBK        Waltrous, SK               I-A     [A]     50 kW ND

CBT        Grand Falls, NF           I-B     [A]     10 kW ND

XEWA     San Luis Potosi, SL     I-A     [A]     150 kW ND

WFLF      Pine Hills, FL                II-B  [B]     50 kW DA-2
    (Former calls: WQTM, WRTM, WWZN, WGTO) 

580 - Regional Channel 

CJFX        Antigonish, NS           III-A   [A]     10 kW DA-1 
        CP NEW DA AT NEW SITE 25 kW DA-1

KMJ         Fresno, CA                 III-A   [B]     50 kW DA-1


640 - US Clear

KFI     Los Angeles, CA            I-A     [A]     50 kW ND 

KYUK Bethel, AK                     I-N     [A]     10 kW ND

CBN Saint John'S, NF               I-B     [A]     10 kW ND 


650 - US Clear

WSM     Nashville, TN              I-A     [A]     50 kW ND 

KENI     Anchorage, AK            I-N     [A]     50 kW ND
    (Former call: KYAK) 


660 - US Clear

WFAN     New York, NY           I-A     [A]     50 kW ND
    (Former calls: WNBC, WRCA, WEAF)

KFAR     Fairbanks, AK             I-N     [A]     10 kW ND

KTNN     Window Rock, AZ     II-A     [B]     50 kW DA-N


- US Clear

WSCR     Chicago, IL                 I-A     [A]     50 kW ND
    (Former call: WMAQ)

KDLG     Dillinghan, AK             I-N     [A]     10 kW ND

CKXB     Musgravetown, NF     II-B     [A]     10 kW DA-2
    (Former call: CHYQ) 

KBOI     Boise, ID                     II-A     [B]     50 kW DA-N


680 - US Clear

KNBR     San Francisco, CA      I-A     [A]     50 kW ND

KBRW     Barrow, AK                I-N     [A]     10 kW ND

WRKO     Boston, MA               II-B    [B]     50 kW DA-2
    (Former calls: WNAC, WLAW)

WCBM    Baltimore, MD            II-B     [B]     50 kW/20 kW DA-2

WPTF     Raleigh, NC                II-B     [B]     50 kW DA-N


690 - Canadian Clear

CINF     Montreal, QC                 I-A     [A]     50 kW DA-1
    (Replacement stations for: CBF) Formerly 50 kW ND

XETRA Tijuana, BN                    I-B     [A]     77 kW/50 kW DA-2

WOKV  Jacksonville, FL             II-B     [B]     50 kW/10 kW DA-N
    Two site operation CP: 50 kW/25 kW DA-N
    (Former calls: WPDQ, WJKF, WAPE)


700 - US Clear

WLW     Cincinnati, OH             I-A     [A]     50 kW ND

KBYR    Anchorage, AK             I-N    [A]     10 kW ND


710 - Shared Clear  (Although shared, there are no foreign Class A's on 710 (hence it is not "shared" in the conventional meaning of that term.) 

WOR     New York, NY             I-B     [A]     50 kW DA-1

KIRO     Seattle, WA                 I-B     [A]     50 kW DA-N
    Protects KSPN 

KSPN     Los Angeles, CA         II-B     [B]     50 kW/10 kW DA-N
    Former calls: KRLO, KEJK, KMPC, KTZN, KDIS 

WAQI     Miami, FL                  II-B     [B]     50 kW DA-2
    Former calls: WFTL, WGBS


720 - US Clear

WGN       Chicago, IL                 I-A     [A]     50 kW ND

KOTZ      Kotzebue, AK             I-N     [A]     10 kW ND

KDWN     Las Vegas, NV          II-A     [B]     50 kW DA-N
    Former call:  KQRX


- Mexican Clear 

CKAC    Montreal, QC               I-B    [A]     50 kW DA-1

XEX       Mexico, DF                 I-A     [A]     100 kW ND
    (Has operated with as much as 500 kW)


740 - Canadian Clear Channel

CHWO    Toronto, ON               I-A    [A]     50 kW ND
    (Replacement station for CBL Toronto)

KCBS     San Francisco, CA       II-B    [B]     50 kW DA-2

WQTM  Orlando, FL                  II-B   [B]     50 kW DA-2
    (Former calls: WWNZ, WKIS)
KRMG   Tulsa, OK                    II-B    [B]     50 kW/25 kW DA-2

KTRH    Houston, TX                II-B    [B]     50 kW DA-2


750 - US Clear

WSB     Atlanta, GA                  I-A     [A]     50 kW ND

KFQD   Anchorage, AK            I-N     [A]     50 kW ND
    Formerly Class II

CBGY   Bonavista Bay, NF       I-B     [A]     10 kW DA-2

KMMJ   Grand Island, NE         II-B    [B]     10.5KW DA-1
    (Formerly a Limited Time II-C)

KXL     Portland, OR                II-B    [B]     50 kW/20 kW DA-2
    (Formerly a Limited Time II-C)


760 - US Clear

WJR    Detroit, MI                     I-A     [A]     50 kW ND

KFMB San Diego, CA               II-B    [B]     5 kW/50 kW DA-N
    (Moved from 540 in 1963, the day power is limited by a contour overlap with KBRT 740 Avalon, CA.)


770 - US Clear

WABC     New York, NY           I-A     [A]     50 kW ND 

KCHU     Valdez, AK                I-N     [A]     9.7 kW ND
    Former call: KGGN 

KKOB     Albuquerque, NM      II-A     [B]     50 kW DA-N

KTTH     Seattle, WA               II-B     [B]     50 kW/5 kW DA-2 
    Former calls: KNWX, KULL, KRPM, KXA)


780 - US Clear

WBBM     Chicago, IL              I-A     [A]     50 kW ND

KNOM     Nome, AK                I-N     [A]     25 kW/14 kW ND

KKOH     Reno, NV                 II-A     [B]     50 kW DA-N
    Former calls: KROW, KCRL


790 - Regional Channel 

CIGM     Sudbury, ON             III-A    [A]     50 kW DA-2


800 - Mexican Clear Channel. 

XEROK   Ciudad Juarez, CH      I-A     [A]     150 kW ND  (Now runs at 20/50 kW)
    Former call: XELO 

CKLW     Windsor, ON (Detroit) II-B    [B]     50 kW DA-2 


810 - US Clear

WGY     Schenectady, NY           I-B     [A]     50 kW ND

KGO     San Francisco,CA          I-B     [A]     50 kW DA-1

WHB     Kansas City, MO          II-B     [B]     50 kW/5 kW DA-N
    Former call: KCMO

WKVM  San Juan, PR                II-B     [B]     50 kW DA-1


820 - US Clear

WBAP     Fort Worth, TX           I-A     [A]     50 kW ND

KCBF     Fairbanks, AK              I-N     [A]     10 kW ND
    Former call: KFRB (once had a CP for 50 kW ND)


830 - US Clear

WCCO     Minneapolis, MN         I-A     [A]     50 kW ND

KMXE     Orange, CA                 II-B     [B]     50 kW/20 kW DA-N
    Former calls: KPLS, KSRT


840 - US Clear

WHAS     Louisville, KY              I-A     [A]     50 kW ND

KXNT     North Las Vegas, NV    II-B    [B]     50 kW/25 kW DA-2
    Former calls: KVEG, KBKK


850 - US Clear
KOA     Denver, CO                     I-B     [A]     50 kW ND

KICY     Nome, AK                     I-N     [A]     50 kW ND
    Uses a 50 kW DA towards Siberia 11 PM TO 4 AM 

WEEI     Boston, MA                  II-B     [B]     50 kW DA-2
    Former call: WHDH

WTAR     Norfolk, VA                 II-B    [B]     50 kW/25 kW DA-2
    Former calls: WRAP, WNIS


860 - Canadian Class I-A 

CJBC     Toronto, ON                  I-A    [A]     50 kW ND


870 - US Clear

WWL     New Orleans, LA           I-A     [A]     50 kW DA-1

KHNR    Honolulu, HI                 II-B     [B]     50 kW DA-1
    Former call: KAIM (Currently operating at lower power from STA site.)


880 - US Clear

WCBS     New York, NY               I-A     [A]     50 kW ND
    Former calls: WAHG, WBOQ, WABC, WCBS. 

KRVN     Lexington, NE                II-A     [B]     50 kW DA-N


890 - US Clear

WLS     Chicago, IL                       I-A     [A]     50 kW ND

KBBI    Homer, AK                       I-N     [A]     10 kW ND

KDXU  St. George, UT                 II-A     [B]     10 kW DA-N


900 - Mexican Class I-A 

CKBI     Price Albert, SK               I-B     [A]     10 kW DA-N

XEW     Mexico, DF                      I-A     [A]     250 kW ND 


910 - Regional Channel

KIYU     Galena, AK                    III-A     [B]     CP 12.5 KW ND

WFDF   Farmington Hills, MI       III-A     [B]     50 kW/19 kW DA-2


940 - Canadian/Mexican clear 

CINW     Montreal, QC                  I-B     [A]     50 kW DA-1
    Replacement station for CBM Montreal

XEQ     Mexico, DF (Iztapalapa)     I-A     [A]     150 kW/50 kW ND 

KWRU  Fresno, CA                       II-B    [B]     50 kW DA-2
    Former call: KFRE


950 - Regional Channel

WWJ     Detroit, MI                     III-A     [B]     50 kW DA-2

WPEN   Philadelphia, PA             III-A     [B]     5 kW/21 kW DA-N
    Two site operations.  CP: 25 kW/21 kW DA-2 

KJR     Seattle, WA                     III-A     [B]     50 kW DA-2


970 - Regional Channel

WFLA  Tampa, FL                      III-A     [B]     25 kW/11 kW DA-2


980 - Regional Channel

CKNW New Westminster, BC     III-A     [A]     50 kW DA-1 


990 - Canadian Class I-A clear. 

CBW     Winnipeg, MB                 I-A     [A]     50 kW/46 kW ND

CBY     Corner Brook, NF             I-B     [A]     10 kW ND

WDYZ Orlando, FL                     II-B     [B]     50 kW/14 kW DA-2
    Former calls: WHOO, WMMA


1000 This channel is shared with Mexico, with the Mexican "grandfathered" 
at 10 kW ND 

WMVP     Chicago, IL                     I-B     [A]     50 kW DA-2
    Former calls: WCFL, WLUP

KOMO     Seattle, WA                     I-B     [A]     50 kW DA-N

XEOY     Mexico, DF (Iztacalco)      I-B     [A]     50 kW/10 kW ND


1010 - Canadian Class I-A clear 

CBR        Calgary, AB                     I-A     [A]     50 kW DA-1

CFRB     Toronto, ON                     I-B     [A]     50 kW DA-2

WINS     New York, NY                 II-B     [B]     50 kW DA-2
    Former call: WGBS 


1020 - US Class 

KDKA     Pittsburgh, PA                 I-A     [A]     50 kW ND
Among the very first broadcast stations in the US. 

KAXX     Eagle River, AK               I-N     [A]     10 kW DA-N
    Former calls: KFFR, KCFA

KCKN     Roswell, NM                   II-A     [B]     50 kW DA-2
    Former calls: KSWS, KBCQ, KINF, KXEM

KTNQ     Los Angeles, CA             II-B     [B]     50 kW DA-2
    Former call: KPOP, KGBS


1030 - US Clear

WBZ       Boston, MA                      I-A     [A]     50 kW DA-1

KTWO   Casper, WY                     II-A     [B]     50 kW DA-N


1040 - US Clear

WHO     Des Moines, IA                  I-A     [A]     50 kW ND


1050 - Canadian/Mexican Clear 

CFGP     Grande Prairie, AB             I-B     [A]     10 kW DA-1

XEG     Monterrey, NL, Mexico         I-A     [A]     150 kW ND

WEPN New York, NY II-B [B] 50 kW DA-1


1060 - Shared with Mexico 

KYW Philadelphia, PA I-B [A] 50 kW DA-1 

XEEP Ejercito de Oriente, DF I-B [A] 100 kW/20 kW ND


1070 - US Clear
1070 Shared with Canada. 

KNX Los Angeles, CA I-B [A] 50 kW ND
KNX was a de-facto Class I-A, on 1050, which is why it is 
50 kW ND-U. It was broken down to a Class I-B when it was 
moved from 1050 to 1070. The Canadian is, of course, a 
Class I-B, and is also 50 kW ND-U. Perhaps the only dual 
50 kW ND-U allocations.
Steve Blodgett's KNX Site 

CBA Moncton, NB I-B [A] 50 kW ND


1080 - US Class 

WTIC Hartford, CT I-B [A] 50 kW DA-N

KRLD Dallas, TX I-B [A] 50 kW DA-N

KUDO Anchorage, AK I-N [A] 10 kW ND

KFXX Portland, OR II-B [B] 50 kW/10 kW DA-2


1090 - Mexican Clear

WBAL Baltmore, MD I-B [A] 50 kW DA-N

KAAY Little Rock, AR I-B [A] 50 kW DA-N
Originally at Hot Springs, AR as a II-B, Perhaps the last 
I-B added in the US. (FORMER CALL KTHS)

XEPRS Rosarito, BCN I-B [A] 50 kW DA-N

KPTK Seattle, WA II-B [B] 50 kW DA-2


1100 - US Clear 

WTAM Cleveland, OH I-A [A] 50 kW ND

KNZZ Grand Junction, CO II-A [B] 50 kW Day/36 kW CH
/10 kW N DA-N
FORMER 50 kW Critical Hours DA DELETED] 

KFAX San Francisco II-B [B] 50 kW DA-1
The granddaddy of weird allocations. For a time was 50 kW 
daytime, 1 kW (from a different site across the bay in 
San Francisco itself) from sunset until 9 PM PT, then back 
to 50 kW from 9 PM PT (midnight at WTAM) until sunrise. 


1110 - US Clear

WBT Charlotte, NC I-B [A] 50 kW DA-N
WBT was a de-facto Class I-A. Purchased by CBS. Broken down 
to a de-facto Class I-B by the addition of KFAB, which had 
been a share-timer on 780. Sold by CBS before the DA was 
installed. Operated 50/10 kW ND-U until the DA was installed 
after the war. 

KFAB Omaha, NE I-B [A] 50 kW DA-N 
Was a share-timer, on 780. Moved to 1110 in order for CBS' 
WBBM to become a Class I-A. 

KDIS Pasadena, CA II-B [B] 50 kW/20 kW DA-2
Ok, so it is now KDIS ... and just a faded memory of the 
legacy of KRLA. 
KRLA Tour KRLA History 


1120 - US Clear 

KMOX     St. Louis, MO                     I-A     [A]     50 kW ND

KPNW     Eugene, OR                       II-A     [B]     50 kW DA-1


1130 - U.S.-Canadian clear 

KWKH Shreveport, LA I-B [A] 50 kW DA-N 

WBBR New York, NY I-B [A] 50 kW DA-N 

CKWX Vancouver, BC I-B [A] 50 kW DA-2
This is the only Canadian Class I station not formerly owned 
by CBC in modern times (CJBC was privately owned, in pre-war 
times, however). 

KFAN Minneanapolis, MN II-B [B] 50 kW/25 kW DA-2


1140 - Shared with Mexico 

WRVA Richmond, VA I-B [A] 50 kW DA-1

XEMR Monterrey, NL I-B [A] 50 kW DA-N

KHTK Sacramento, CA II-B [B] 50 kW DA-2


1150 - Regional Channel 

CKX Brandon, MB III-A [A] 50 kW/10 kW DA-2 

KTLK Los Angeles, CA III-A [B] 50 kW/44 kW DA-2

WHBY Kimberly, WI III-A [B] 20 kW/25 kW DA-2


1160 - US Clear 
1160 KSL Salt Lake City, UT I-A [A] 50 kW ND

WYLL Chicago, IL II-B [B] 50 kW DA-2


1170 - US Clear
1170 WWVA Wheeling, WV I-B [A] 50 kW DA-N

KFAQ Tulsa, OK I-B [A] 50 kW DA-N

KJNP North Pole, AK I-N [A] 50 kW/21 kW ND
Formerly 50 kW DA-N


1180 - US Class 

WHAM Rochester, NY I-A [A] 50 kW ND

KOFI Kalispell,MT II-A [B] 50 kW/10 kW DA-N

RADIO MARTI Marathon Key, FL -- -- 100 kW DA-1
U.S. IBB / VOA, Not in FCC DATA 


1190 - US Class 

WOWO Ft. Wayne, IN I-B [B] 50 kW/9.8 kW DA-N 
Originally a powerhouse on the 1190 channel, WOWO was 
purchased by ICB, owner of WLIB. Power reduced to 9.8 kW, 
nights, which effectively broke this station down to a Class 
II-B. Was a de-facto Class I-A until co-owned KEX was moved 
from 1180 to 1190. 
WOWO Tour 

KEX Portland, OR I-B [A] 50 kW DA-N
Was a share-timer, with KOB, on 1180. Became a de-facto Class 
I-B when Westinghouse's WOWO was broken down to a Class I-B 

XEWK Guadalajara, JA I-B [A] 50 kW/10 kW ND 

WLIB New York, NY II-C [B] 10 kW/30 kW DA-2
Formerly a daytimer, became a fulltimer with the breaking 
down of WOWO. 


1200 WOAI San Antonio, TX I-A [A] 50 kW ND

WCHB Taylor, MI II-B [B] 50 kW/15 kW DA-2


1210 WPHT Philadelphia, PA I-A [A] 50 kW ND

KGYN Guymon, OK II-A [B] 10 kW DA-N


1220 Mexican Class I-A clear 

XEB San Lorenzo Tezonco, DF I-A [A] 100 kW ND 

WHKW Cleveland, OH II-B [B] 50 kW DA-1


1260 Regional Channel 

CFRN Edmonton, AB III-A [A] 50 kW DA-N 


1270 Regional Channel

WXYT Detroit, MI III-A [B] 50 kW DA-2


1300 Regional Channel

WOOD Grand Rapids, MI III-A [B] 20 kW DA-2


1410 Regional Channel 

CFuN Vancouver, BC III-A [A] 50 kW DA-2


1500 WTWP Washington, DC I-B [A] 50 kW DA-2

KSTP Minneapolis, MN I-B [A] 50 kW DA-N


1510 WLAC Nashville, TN I-B [A] 50 kW DA-N

KGA Spokane, WA I-B [A] 50 kW DA-2

WWZN Boston, MA II-B [B] 50 kW DA-3


1520 WWKB Buffalo, NY I-B [A] 50 kW DA-1 
Originally WKBW 

KOKC Oklahoma City, OK I-B [A] 50 kW DA-N

KGDD Oregon City, OR II-B [B] 50 kW/15 kW DA-2


1530 WCKY Cincinnati, OH I-B [A] 50 kW DA-N
Still licensed to use ND-D from LSR Cincinnati to LSS 
Sacramento. This was the payback for allowing KFBK to move 
from a Class IV to a Class I-B, whereas before WCKY had 1530 
all to itself.

KFBK Sacramento, CA I-B [A] 50 kW DA-2
Boasts a very Efficient Franklin Antenna
KFBK Tour 


1540 Shared with ZNS-1, Bahamas 

KXEL Waterloo, IA I-B [A] 50 kW DA-N

ZNS-1 Nassau, Bahamas I-B [A] 50 kW DA-1 

KMPC Los Angeles, CA II-B [B] 50 kW/37 kW DA-2

WDCD Albany, NY II-B [B] 50 kW DA-1


1550 Shared Canadian/Mexican. The Canadian is 10 kW DA-1. The Mexican is 
grandfathered at 10 kW, believed to be operating 100 kW/10 kW ND 

CBE Windsor, ON I-B [A] 10 kW DA-1

XERUV Jalapa, VC I-B [A] 10 kW ND 

KKAD Vancouver, WA II-B [B] 50 kW/12 kW DA-N


1560 WQEW New York, NY I-B [A] 50 kW DA-2

KNZR Bakersfield, CA I-B [A] 25 kW/10 kW DA-N
Grandfathered at 10 kW N. 
Presently operating 25 kW-D, 10 kW-N, DA-N. 


1570 Mexican Class I-A 

XERF Ciudad Acuna, CI I-A [A] 250 kW ND
Reported recently to be operating at 10 kW ND 


1580 Canadian Class I-A 

CHUC Cobourg, ON --- [A] 10 kW DA-1 
(REPLACED CBJ Chicoutimi, QU I-A [A] 10 KW DA-1)

CKDO Oshawa, ON --- [A] 10 kW DA-1 
(Replacement for CHUC) 

KMIK Tempe, AZ II-B [B] 50 kW DA-N

KBLA Santa Monica, CA II-B [B] 50 kW DA-2


1590 Regional Channel 

NEW Yellowknife, NT --- [A] 50 kW DA-1 


... more coming....., including .... 

Frequency            Call Letters                            State

710                        WOR                              New York, NY

710                        KTZN                             Los Angeles, Ca

710                        KIRO                              Seattle, WA

720                        WGN                              Illinois

740                        KCBS                            San Francisco, Ca

750                        WSB                              Atlanta, Georgia

760                        WJR                               Detroit, Michigan

770                        WABC                           New York, NY

770                        KOB                               Albuquerque, NM

770                        KNWX                           Seattle, WA

780                        WBBM                          Chicago, Illinois

800                        CKLW                          Windsor, Ontario, (Detroit)

810                        KCMO                           Kansas City, Missouri

810                        KGO                              San Francisco, CA

810                        WGY                             Schenectady, New York

820                        WBAP                           Dallas/Ft Worth, Texas

830                        WCCO                          Minneapolis, Minnesota

840                        WHAS                           Louisville, Kentucky

850                        KOA                              Denver, Colorado

850                        WHDH (WEEI)              Boston, Mass

860                        KTRB                            San Francisco, Ca

870                        WWL                             New Orleans, Louisiana

880                        WCBS                           New York, NY

890                        WLS                              Chicago, Illinois

940                        KWRU                           Fresno, Ca

1000                      WMVP (WCFL)             Chicago, Ill

1000                      KOMO                           Seattle, WA

1010                      WINS                             New York, NY

1020                      KDKA                            Pittsburgh, PA

1020                      KINF                              Roswell, NM

1020                      KTNQ                           Los Angeles, Ca

1030                      WBZ                              Boston, Massachusetts

1040                      WHO                             Des Moines, Iowa

1050                      WEPN                           New York, NY

1050                      KTCT                           San Mateo, Ca

1050                      XEG                              Monterrey, Mexico

1060                      KYW                             Philadelphia, PA

1070                      KNX                              Los Angeles, Ca

1080                      WTIC                            Hartford, Connecticut

1080                      KRLD                            Dallas, Texas

1080                      KWJJ                             Portland, Oregon

1090                      WBAL                           Baltimore, Maryland

1090                      KTHS                            Little Rock, AR

1090                      KOMO                           Seattle, WA

1090                      XEPRS                           Rosarito, BC

1100                      KFAX (KJBS)                San Francisco, CA

1100                      WTAM                          Cleveland, Ohio

1110                      WBT                              Charlotte, North Carolina

1110                      KFAB                            Omaha, NE

1110                      KRLA                            Pasadena, Ca

1120                      KPNW                           Eugene, Oregon

1120                      KMOX                           St. Louis, Missouri

1130                      KWKH                           Shreveport, Louisiana

1130                      WBBR                           New York, NY

1130                      CKWX                           Vancouver, BC

1140                      WRVA                           Richmond, Virginia

1140                      KHTK                            Sacramento, Ca

1150                      KTLK                            Downey, Ca

1160                      KSL                               Salt Lake City, Utah

1160                      WYLL                           Chicago, Illinois

1170                      WWVA                         Wheeling, WVA

1170                      KVOO                           Tulsa, OK

1180                      WHAM                          Rochester, New York

1190                      WOWO                         Fort Wayne, Indiana

1190                      WLIB                            New York, NY

1190                      KEX                               Portland, Oregon

1200                      WOAI                            San Antonio, Texas

1200                      WKOX                           Newton, Mass    

1210                      WCAU (WPHT)             Philadelphia, Pennsylvania

1220                      WHK                              Cleveland, Ohio

1500                      WTOP                            Washington, DC

1500                      KSTP                              Minneapolis, Minnesota

1510                      WLAC                            Nashville, Tennessee

1510                      KGA                               Spokane, WA

1510                      WWZN (WMEX)            Boston, Mass

1520                      WWKB (WKBW)           Buffalo, New York

1520                      KOMA                           Oklahoma City, OK

1530                      WSAI                             Cincinnati, Ohio

1530                      KFBK                             Sacramento, Ca

1540                      WDCD                           Albany, New York

1540                      KXEL                             Waterloo, Iowa

1560                      WQXR                           New York, NY

1560                      KNZS                             Bakersfield, Ca

1580                      KBLA                            Santa Monica, Ca