186:, the powerful General Electric station in Denver, Colorado, which had been exclusively assigned to the Class B frequency of 930 kHz, did not broadcast on Thursday nights, when it and other local stations observed "silent night", staying off the air so that local listeners could receive distant stations. Thus, McDonald proposed that, with KOA off the air, WJAZ could be permitted to broadcast on 930 kHz on Thursday evenings for two hours, from 10:00 p.m. to midnight Central time. In addition, McDonald reassured the Department of Commerce that "Our station is concerned with the sole purpose of giving to the public the highest form of entertainment in but a limited time. We have felt that to do this, sufficient high class talent could not be secured continuously throughout the year for more than two hours a week." KOA management, plus two Cincinnati stations operating on an adjacent frequency, consented to this arrangement.
195:
78:
207:
exclusively by
Canadian stations. In early January 1926, McDonald directed WJAZ to move from its 930 kHz assignment to 910 kHz, one of the restricted Canadian frequencies, and begin expanded hours of operation. The U.S. government accused WJAZ of "pirating" the Canadian frequency and ordered the station to return to 930 kHz, while threatening legal action if it did not comply. However, McDonald was defiant, countering that "...Zenith Radio Corporation intends to litigate in every possible way the questions involved". On February 5, 1926, WJAZ broadcast the operetta "The Pirate", and publicity photographs of engineering staff dressed as "wave pirates" were distributed to newspapers and magazines.
137:
155:, mounted on the back of a 1-ton Federal-Knight truck. The WJAZ call sign was transferred to this mobile outfit, which also transmitted on 1120 kHz. Befitting a portable, the station was completely self contained: the storage batteries that powered the transmitter were charged by an on-board generator, and it carried its own antenna, with gold-plated antenna wires supported by telescoping masts. (At this time, Zenith's low-powered station which temporarily held the WJAZ call letters reverted to its original call sign of WSAX.)
46:, mounted on a truck body, in order to evaluate potential new transmitter locations, and this mobile unit inherited the WJAZ call letters. Roving test broadcasts were made from various sites surrounding Chicago, and Mount Prospect, Illinois was ultimately selected for the new transmitter location. In 1925, the replacement facility was completed, and the WJAZ call sign was transferred from the portable unit to the new station.
148:, was quoted as saying "...the station will be erected where the community desires it. It goes without saying that a lot of advertising benefits will accrue to the place that will get the new WJAZ." However, the communities may not have been fully aware that they would only be hosting the transmitter site, with the station's studios remaining in Chicago.
223:'s ruling was announced, which stated that under the 1912 Act the Commerce Department in fact could not limit the number of broadcasting licenses issued, or designate station frequencies. The U.S. government reviewed whether to appeal this decision, but Acting Attorney General William Donovan sided with the original decision.
234:(FRC), which was tasked with undoing the disruption which the WJAZ case had triggered. On May 3, 1927 the first of numerous reassignments shifted WJAZ away from the Canadian frequency to 760 kHz, and this was followed the next month by a move 1140 kHz. On November 11, 1928, implementation of the FRC's
110:) were assigned to this frequency on a timesharing basis. Zenith soon found that operating a high-powered station within Chicago city limits caused extensive "blanketing" interference to nearby receivers, and decided to relocate WJAZ to a suburban transmitter site. A short-term agreement was made with the
267:
Unsatisfied with its somewhat limited schedule, WCKY petitioned the FRC to delete the two remaining
Chicago-area stations, and give it unlimited use of the frequency. An FRC examiner recommended that this request be denied, however a review by the full commission ruled on October 30, 1931 in favor of
178:
in
Chicago. The station's quality equipment and high power qualified it for classification as a "Class B" station. However, during the previous year the number of well-financed stations had steadily increased, and regulators at the Department of Commerce initially believed that there were no unused
353:
notified WSAX that "From an examination of your application for future license it does not find that public interest, convenience, or necessity would be served by granting it." Although the station was given the opportunity to challenge this finding, it instead surrendered its license in July 1928.
271:
WJAZ was deleted on
November 23, 1931, however WCHI appealed the ruling, arguing that not only should it be allowed to remain on the air, but it, rather than WCKY, should have been assigned the hours previously used by WJAZ. The appeal was unsuccessful, and WCHI was formally deleted on May 7, 1932.
214:
was filed in
Chicago. McDonald expected a narrow ruling in his favor, claiming that only a small number of stations, including WJAZ, held the "Class D Developmental" licenses that were free from normal restrictions. However, some earlier legal challenges had raised doubts about the extent that the
165:
Following the selection of Mount
Prospect as the permanent transmitter site, the portable station began making publicity tours, first through the midwest, followed by the western states, including Pikes Peak, Colorado. During the summer of 1925, in order to free up the call letters for transfer to
33:
The original WJAZ was first licensed in the summer of 1922, and the next year began broadcasting from the
Edgewater Beach Hotel in Chicago. However, it was soon determined that a suburban transmitter location would be preferable, and Zenith began preparations to re-establish WJAZ's operations at a
255:
in
Covington, Kentucky, was added as a fourth assignment to the three Chicago-area stations broadcasting on 1480 kHz. The grant specified that WCKY would receive 4/7ths of the available broadcasting hours, with WJAZ and the other two stations allocated 1/7th time each, moreover, WCKY "was to
97:
The station provided general entertainment programming, and was primarily used to promote the sale of Zenith-brand radio receivers. One unusual feature was a series of midnight transmissions, operating under the experimental call sign "9XN", as one of the stations communicating with Dr. Donald B.
268:
WCKY, and ordered both WJAZ and WCHI deleted. As part of its justification, the
Commission noted that, even though WJAZ was only allocated two hours a day, it was not broadcasting during all of its available hours, in addition to operating with less than its full authorized power of 5,000 watts.
85:
WJAZ was first licensed on August 17, 1922 to the
Chicago Radio Laboratory (reorganized in 1924 as the Zenith Radio Corporation), for operation on the standard "entertainment" wavelength of 360 meters (833 kHz). Its call letters were randomly assigned from a sequential alphabetical list
206:
for additional programming, and Zenith's general counsel, Irving Herriott, later testified that "At no time was it the intention to be satisfied with two hours a week." The United States at this time had an informal agreement with Canada that six designated AM band frequencies would be used
127:
In order to maintain control over the WJAZ call letters while the new suburban facility was under construction, Zenith arranged to have the call sign of its second, low-powered Chicago station, located at the McCormick building and broadcasting on 1120 kHz, changed from WSAX to WJAZ.
105:
Effective May 15, 1923, government regulators allocated a band of "Class B" frequencies, reserved for stations that had quality programming and more powerful transmitters. 670 kHz was allocated for use in the Chicago area, and both WJAZ and WMAQ (now
263:
WHT changed call letters twice, to WSOA in early 1929, and WCHI in early 1930, and was subsequently deleted on October 31, 1930, after which its former timeshare partner, WORD, changed its own call sign to WCHI and relocated to Deerfield.
256:
have first choice of the broadcasting time". In early 1930 all four stations were reassigned from 1480 kHz to 1490 kHz. (WCKY had been encountering mutual interference over much of Kentucky and Tennessee with
93:
on May 12, 1923. For publicity, the general public was invited to watch performances through soundproof three-ply plate glass windows. The transmitter and antenna were located adjacent to the hotel building.
118:
and the transmitting frequency to 810 kHz. The Tribune agreement only lasted a few weeks, and the station was then sold to the Edgewater Beach Hotel management, which changed the call letters to WEBH.
238:
resulted in a major reorganization of the AM broadcasting band. WJAZ was reassigned to 1480 kHz, and required to divide hours on this frequency with two other Illinois stations: WHT in Deerfield, and
41:
In order to maintain control of the well-known WJAZ call sign until the new facility was ready, in 1924 Zenith briefly renamed a second Chicago station, WSAX, to WJAZ. Later that year, Zenith prepared a
158:
Zenith reported that it would be evaluating sites within 100 miles (160 km) of Chicago. Broadcasts from each community featured entertainment plus speeches by local dignitaries. During the
49:
The next year WJAZ gained national notoriety, when Zenith made an unauthorized change in its transmitting frequency, directly challenging the Department of Commerce's authority under the
982:(edition June 30, 1928), page 176. WIBO, Des Plaines, Illinois, was originally said to also be moving to 1480 kHz, but instead was assigned first to 570 kHz, then 560 kHz.
202:
Despite E. F. McDonald's initial expression of satisfaction with a broadcast schedule of just two hours per week, he soon began demanding expanded hours after partnering with the
2866:
1243:
Second Annual Report of the Federal Radio Commission for the Year Ended June 30, 1928, Together With Supplemental Report for the Period From July 1, 1928 to September 30, 1928
152:
43:
89:
WJAZ initially had a very limited broadcasting schedule. It gained prominence when it began broadcasting from a newly constructed studio located on the ground floor of the
26:
used from 1922 to 1931 by a series of four separate, but closely related, broadcasting stations located in Chicago, Illinois and operated by the Chicago Radio Laboratory/
174:
Following completion of the Mount Prospect transmission site, Zenith's revived WJAZ was licensed on October 1, 1925. Its new studio was located on the 23rd floor of the
140:
In 1924-1925 the WJAZ call letters were assigned to a "motor truck" mounted portable transmitter, used to evaluate potential permanent transmitter sites around Chicago.
2886:
2840:
194:
2881:
2871:
114:
to take over the existing station's programming, which went into effect on March 29, 1924, and at the same time the station's call letters were changed to
77:
2876:
2815:
151:
In order to evaluate the various locations, as well as generate publicity for the parent company, in the fall of 1924 Zenith constructed a 100-watt
2891:
2810:
2763:
1327:
144:
Many communities surrounding Chicago expressed interest in becoming the permanent location for the re-established WJAZ. Zenith's president,
2730:
2861:
2805:
2793:
2740:
2655:
159:
136:
64:
WJAZ was deleted in 1931, after a co-channel station in Kentucky successfully petitioned for full-time use of the shared frequency.
2750:
1299:
219:, could restrict licenses and designate transmitting frequencies, and the actual outcome was sweeping. On April 16, 1926, Judge
2778:
2745:
2800:
81:
Audiences at the Edgewater Beach Hotel could watch WJAZ studio performances through sound-proofed plate-glass windows (1923)
38:
as WGN, the station license for the original WJAZ was sold to the hotel management, and the call letters changed to WEBH.
226:
The immediate result of the court case was a large increase in the number of stations, reaching over 730 by the time the
175:
162:, the station was transported to Escanaba, Michigan, to document the effects of the dimming sun on radio transmissions.
502:
2773:
2083:
1320:
1190:
534:
518:
390:
1238:
1123:
1020:
991:
959:
943:
927:
553:
486:
454:
858:
2720:
1270:
1054:
1254:
1222:
1206:
1174:
1142:
1086:
1070:
975:
874:
814:
795:
696:
677:
627:
589:
570:
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346:
231:
58:
830:
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409:
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220:
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on March 29, 1924, and WEBH in May 1924. WEBH was deleted in November 1928 when it was consolidated with
2829:
2735:
90:
1239:"Appendix F (2): Letter to and list of stations included in General Order No. 32, issued May 25, 1928"
1158:
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608:
145:
27:
886:
776:
227:
216:
54:
50:
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350:
235:
198:
February 1926 publicity photograph of the WJAZ engineering staff dressed as "wave pirates".
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240:
57:
was enacted, which strengthened the government's regulatory powers and established the
1305:
280:
Summary of the four Chicago stations which held the WJAZ call sign from 1922 to 1931.
2855:
1275:
Second Annual Report of the Federal Radio Commission For the Year Ended June 30, 1928
260:
Nashville's operation on 1490 kHz; at this same time WLAC moved to 1470 kHz).
2354:
2017:
1037:
331:
Call sign changed back to WSAX later in 1924. Station deleted, summer of 1925.
230:
was passed in February 1927 to restore government control. This act formed the
2617:
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1302:
by the Mount Prospect Historical Society, October 11, 2017 (dailyherald.com)
1059:
Fifth Annual Report of the Federal Radio Commission for the Fiscal Year 1931
369:
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23:
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2388:
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1927:
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183:
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the new permanent station, the portable's call sign was changed to WSAX.
115:
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2012:
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Call sign changed to WSAX in the summer of 1925. On May 25, 1928, the
102:, which became icebound and isolated 11 degrees below the North Pole.
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976:"Broadcasting Stations, by wave lengths, effective November 11, 1928"
53:
to assign frequencies. The courts sided with WJAZ; as a result the
2833:
2091:
1842:
193:
182:
In response, E. F. McDonald developed a compromise. He noted that
135:
76:
487:"Peeps into Broadcast Stations: Chicago Enters Northern Solitude"
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257:
212:
United States versus Zenith Radio Corporation and E. F. McDonald
107:
1309:
932:
Official Opinions of the Attorneys General of the United States
34:
more suitable site. Following operation for a few weeks by the
847:
The Beginning of Broadcast Regulation in the Twentieth Century
980:
Commercial and Government Radio Stations of the United States
368:
Station deleted on November 23, 1931 after hours assigned to
791:
789:
748:"Tests of Radio During Eclipse Confirm Wave Length Theories"
665:, August 13, 1924, Radio Broadcasting News section, page 2.
692:
690:
362:
October 1, 1925 as WJAZ (Mount Prospect transmitter site).
944:"List of broadcasting stations issued temporary permits"
566:
564:
179:"Class B" assignments available for use by the station.
1138:
1136:
585:
583:
930:
by Acting Attorney William J. Donovan (July 8, 1926),
519:"Allocation of New Wave Lengths for Class B Stations"
1271:"The stations that surrendered their licenses were:"
215:
Department of Commerce, under the provisions of the
2626:
2081:
1851:
1831:
1754:
1721:
1467:
1348:
1290:"Portable Stations - The Radio Rovers of the 1920s"
1128:
Sixth Annual Report of the Federal Radio Commission
661:"First Portable Broadcaster Will Be Zenith Built",
1300:"Remembering Mount Prospect's Zenith radio towers"
810:
808:
673:
671:
405:
403:
98:MacMillan's Arctic expedition aboard the schooner
503:"With MacMillan and Radio, North of Civilization"
713:"Radio Gossip and News: WJAZ's Portable Station"
623:
621:
727:
725:
1321:
647:, November 8, 1924 (Vol. 83, No. 6), page 23.
8:
455:"World's Most Powerful Broadcasting Station"
2867:Defunct radio stations in the United States
549:
547:
1718:
1328:
1314:
1306:
1119:
1117:
1115:
928:"Federal Regulation of Radio Broadcasting"
849:by Marvin R. Bensman, 2000, pages 159-160.
86:maintained by the Department of Commerce.
412:(during the week of August 12–19, 1922),
1296:, December, 2014 (theradiohistorian.org)
887:"U. S. Questions WJAZ's Wave Right"
859:WJAZ "wave pirates" publicity photograph
604:
602:
365:October 1, 1925 until November 23, 1931.
282:
251:In early 1929 a newly licensed station,
657:
655:
653:
383:
2887:Radio stations disestablished in 1931
1277:, page 152. (Included under "Zone 5")
732:"Seek New Location With Portable Set"
719:, November 16, 1924, Part 1, page 39.
16:Radio stations in Chicago (1922–1931)
7:
1103:"Six More Stations Ordered Silenced"
777:"The Far West Gets its Radio Thrill"
306:August 17, 1922 until March 29, 1924
2882:1931 disestablishments in Illinois
2872:Radio stations established in 1922
2794:List of radio stations in Illinois
1044:. February 13, 1930. p. F-14.
763:"Musicians Here to Give Program",
643:"A Portable Broadcasting Outfit",
342:Fall of 1924 until summer of 1925.
190:"Wave piracy" legal dispute (1926)
14:
934:, Volume 35, 1929, pages 126-132.
765:Findlay (Ohio) Morning Republican
160:solar eclipse of January 24, 1925
73:Initial authorization (1922–1924)
339:Fall of 1924 as WJAZ (portable).
210:On January 20, the federal suit
2877:1922 establishments in Illinois
2841:Audio from channel 6 TV station
903:"'Yo-ho-ho'" Sing Pirates Bold"
609:"Three Chicago Stations Change"
471:"In the Crystal Studio at WJAZ"
2892:Defunct mass media in Illinois
877:, January 8-9, 1926, page 289.
837:, October 1925, pages 767-769.
752:Washington (D.C.) Evening Star
717:Washington (D.C.) Evening Star
558:, WGN, Inc., 1961, pages 9-16.
509:, October 1923, pages 500-507.
1:
1856:by frequency & subchannel
1197:, November 30, 1928, page 12.
1165:, November 15, 1931, page 27.
1093:, November 29, 1930, page 11.
1087:"Alterations and Corrections"
1027:, February 28, 1930, page 23.
1021:"Alterations and Corrections"
918:Bensman (2000) pages 167-175.
875:Senate Radio Control Hearings
796:"Alterations and Corrections"
697:"Alterations and Corrections"
628:"Alterations and Corrections"
590:"Alterations and Corrections"
571:"Alterations and Corrections"
535:"Alterations and Corrections"
443:Forest Park (Illinois) Review
153:portable broadcasting station
44:portable broadcasting station
1255:"Strike out all particulars"
1223:"Strike out all particulars"
1191:"Strike out all particulars"
1175:"Strike out all particulars"
1149:, November 30, 1931, page 8.
1143:"Strike out all particulars"
1109:, November 1, 1931, page 12.
1077:, October 31, 1930, page 12.
1071:"Strike out all particulars"
998:, February 28, 1929, page 5.
909:, April 3, 1926, pages 5, 8.
802:, September 1, 1925, page 7.
432:, September 1, 1922, page 3.
410:"Thirteen Stations Licensed"
132:Portable station (1924–1925)
1130:(Fiscal Year 1932), page 8.
1038:"Shifts At 17 Stations Set"
962:(Effective June 15, 1927),
754:, January 25, 1925, page 3.
738:, October 25, 1924, page 8.
416:, August 23, 1922, page 15.
2908:
1073:(WCHI (Deerfield, Ill.)),
950:, April 30, 1927, page 12.
821:, October 1, 1925, page 3.
703:, October 1, 1924, page 5.
684:, October 1, 1924, page 3.
461:, September 1923, page 62.
393:(WJAZ studio photograph),
2862:Radio stations in Chicago
2721:Chicago metropolitan area
2714:
1294:Spectrum Monitor Magazine
1261:, July 31, 1928, page 18.
1213:, August 1, 1923, page 3.
1011:, August 7, 1929, page 6.
525:, April 28, 1923, page 6.
493:, February 1924, page 42.
477:, October 1923, page 456.
123:Temporary transfer (1924)
28:Zenith Radio Corporations
2764:Benton Harbor-St. Joseph
1229:, July 1, 1925, page 10.
1181:, May 31, 1932, page 11.
1055:"Radio Stations deleted"
783:, October 1925, page 72.
577:, April 1, 1924, page 9.
555:WGN: A Pictorial History
541:, June 1, 1923, page 11.
347:Federal Radio Commission
303:August 17, 1922 as WJAZ.
232:Federal Radio Commission
59:Federal Radio Commission
966:, May 31, 1927, page 6.
960:"Broadcasting Stations"
634:, June 2, 1924, page 8.
596:, June 2, 1924, page 7.
459:Popular Science Monthly
445:, May 12, 1923, page 2.
325:Summer of 1923 as WSAX.
247:Station deletion (1931)
2830:Clear-channel stations
2719:Radio stations in the
1259:Radio Service Bulletin
1227:Radio Service Bulletin
1211:Radio Service Bulletin
1195:Radio Service Bulletin
1179:Radio Service Bulletin
1159:"WCHI Asks Stay Order"
1147:Radio Service Bulletin
1091:Radio Service Bulletin
1075:Radio Service Bulletin
1025:Radio Service Bulletin
996:Radio Service Bulletin
964:Radio Service Bulletin
948:Radio Service Bulletin
893:, March 1926, page 19.
819:Radio Service Bulletin
800:Radio Service Bulletin
767:, May 2, 1925, page 2.
701:Radio Service Bulletin
682:Radio Service Bulletin
632:Radio Service Bulletin
594:Radio Service Bulletin
575:Radio Service Bulletin
539:Radio Service Bulletin
430:Radio Service Bulletin
414:New York Evening World
397:, July 1923, page 277.
292:WJAZ call letter usage
199:
141:
82:
2801:Mass media in Chicago
615:, July 1924, page 53.
197:
139:
91:Edgewater Beach Hotel
80:
2760:Other nearby regions
2731:Aurora/Elgin/Wheaton
865:, May 1926, page 90.
391:"The March of Radio"
2741:Joliet/Morris/Crete
2691:WORD/WCHI (1490 AM)
1292:by John Schneider,
1124:"Broadcast Section"
1009:Cincinnati Enquirer
831:"WJAZ's New Studio"
663:The Pittsburgh Post
170:Re-licensing (1925)
146:E. F. McDonald, Jr.
1833:NOAA Weather Radio
1336:Radio stations in
221:James H. Wilkerson
200:
142:
83:
2849:
2848:
2751:Northwest Indiana
2706:WWHN-FM (88.9 FM)
2676:WGHC-LP (98.3 FM)
1827:
1826:
1042:Dayton Daily News
1007:"WCKY Schedule",
376:
375:
309:Call sign became
228:Radio Act of 1927
217:Radio Act of 1912
55:Radio Act of 1927
51:Radio Act of 1912
2899:
2779:Milwaukee-Racine
2746:Kenosha/Waukegan
1719:
1330:
1323:
1316:
1307:
1278:
1268:
1262:
1252:
1246:
1245:, pages 146-149.
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510:
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494:
491:The Wireless Age
484:
478:
468:
462:
452:
446:
439:
433:
423:
417:
407:
398:
388:
351:General Order 32
283:
236:General Order 40
2907:
2906:
2902:
2901:
2900:
2898:
2897:
2896:
2852:
2851:
2850:
2845:
2822:
2757:
2710:
2651:WCLM (101.9 FM)
2622:
2077:
1855:
1847:
1835:
1823:
1750:
1717:
1463:
1344:
1334:
1286:
1281:
1269:
1265:
1253:
1249:
1237:
1233:
1221:
1217:
1205:
1201:
1189:
1185:
1173:
1169:
1157:
1153:
1141:
1134:
1122:
1113:
1101:
1097:
1085:
1081:
1069:
1065:
1053:
1049:
1036:
1035:
1031:
1019:
1015:
1006:
1002:
990:
986:
974:
970:
958:
954:
946:(May 3, 1927),
942:
938:
926:
922:
917:
913:
901:
897:
885:
881:
873:
869:
857:
853:
845:
841:
835:Radio Broadcast
829:
825:
813:
806:
794:
787:
775:
771:
762:
758:
746:
742:
730:
723:
711:
707:
695:
688:
676:
669:
660:
651:
645:Literary Digest
642:
638:
626:
619:
607:
600:
588:
581:
569:
562:
552:
545:
533:
529:
517:
513:
507:Radio Broadcast
501:
497:
485:
481:
475:Radio Broadcast
469:
465:
453:
449:
440:
436:
424:
420:
408:
401:
395:Radio Broadcast
389:
385:
381:
278:
249:
192:
176:Straus Building
172:
134:
125:
112:Chicago Tribune
75:
70:
36:Chicago Tribune
17:
12:
11:
5:
2905:
2903:
2895:
2894:
2889:
2884:
2879:
2874:
2869:
2864:
2854:
2853:
2847:
2846:
2844:
2843:
2837:
2832:with extended
2826:
2821:
2820:
2819:
2818:
2813:
2808:
2806:Radio stations
2797:
2796:
2791:
2787:
2786:
2781:
2776:
2771:
2766:
2761:
2756:
2755:
2754:
2753:
2748:
2743:
2738:
2733:
2723:
2716:
2715:
2712:
2711:
2709:
2708:
2703:
2701:WSSD (88.1 FM)
2698:
2696:WRLL (1690 AM)
2693:
2688:
2683:
2678:
2673:
2668:
2666:WEDC (1240 AM)
2663:
2661:WCRW (1240 AM)
2658:
2656:WCLR (88.3 FM)
2653:
2648:
2646:WCGO (1600 AM)
2643:
2641:WCFJ (1470 AM)
2638:
2636:WCEV (1450 AM)
2632:
2630:
2624:
2623:
2621:
2620:
2615:
2610:
2605:
2600:
2595:
2590:
2585:
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2558:
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2239:
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2217:
2212:
2211:
2210:
2200:
2199:
2198:
2188:
2183:
2182:
2181:
2171:
2170:
2169:
2159:
2154:
2149:
2144:
2139:
2134:
2129:
2124:
2119:
2114:
2109:
2104:
2099:
2094:
2088:
2086:
2079:
2078:
2076:
2075:
2070:
2065:
2060:
2055:
2050:
2045:
2040:
2035:
2030:
2025:
2020:
2015:
2010:
2005:
2000:
1995:
1990:
1985:
1980:
1975:
1970:
1965:
1960:
1955:
1950:
1945:
1940:
1935:
1930:
1925:
1920:
1915:
1910:
1905:
1900:
1895:
1890:
1885:
1880:
1875:
1870:
1865:
1859:
1857:
1849:
1848:
1846:
1845:
1839:
1837:
1829:
1828:
1825:
1824:
1822:
1821:
1816:
1811:
1806:
1801:
1796:
1791:
1786:
1785:
1784:
1779:
1771:
1766:
1760:
1758:
1752:
1751:
1749:
1748:
1743:
1738:
1733:
1727:
1725:
1716:
1715:
1710:
1705:
1700:
1695:
1690:
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1680:
1675:
1670:
1665:
1660:
1655:
1650:
1645:
1640:
1635:
1630:
1625:
1620:
1615:
1610:
1605:
1600:
1595:
1590:
1585:
1584:
1583:
1578:
1570:
1569:
1568:
1563:
1558:
1550:
1545:
1544:
1543:
1538:
1533:
1525:
1524:
1523:
1518:
1513:
1505:
1504:
1503:
1498:
1493:
1488:
1480:
1474:
1472:
1465:
1464:
1462:
1461:
1456:
1451:
1446:
1441:
1436:
1431:
1426:
1421:
1416:
1411:
1406:
1401:
1396:
1391:
1386:
1381:
1376:
1371:
1366:
1361:
1355:
1353:
1346:
1345:
1335:
1333:
1332:
1325:
1318:
1310:
1304:
1303:
1297:
1285:
1284:External links
1282:
1280:
1279:
1263:
1247:
1231:
1215:
1207:"New Stations"
1199:
1183:
1167:
1151:
1132:
1111:
1095:
1079:
1063:
1047:
1029:
1013:
1000:
992:"New Stations"
984:
968:
952:
936:
920:
911:
895:
879:
867:
851:
839:
823:
815:"New Stations"
804:
785:
769:
756:
740:
721:
705:
686:
678:"New Stations"
667:
649:
636:
617:
598:
579:
560:
543:
527:
511:
495:
479:
463:
447:
441:"Radio News",
434:
426:"New Stations"
418:
399:
382:
380:
377:
374:
373:
366:
363:
360:
356:
355:
343:
340:
337:
333:
332:
329:
326:
323:
319:
318:
307:
304:
301:
297:
296:
295:Later history
293:
290:
287:
277:
274:
248:
245:
204:Chicago Herald
191:
188:
171:
168:
133:
130:
124:
121:
74:
71:
69:
66:
15:
13:
10:
9:
6:
4:
3:
2:
2904:
2893:
2890:
2888:
2885:
2883:
2880:
2878:
2875:
2873:
2870:
2868:
2865:
2863:
2860:
2859:
2857:
2842:
2838:
2835:
2831:
2827:
2824:
2823:
2817:
2814:
2812:
2809:
2807:
2804:
2803:
2802:
2799:
2798:
2795:
2792:
2789:
2788:
2785:
2782:
2780:
2777:
2775:
2772:
2770:
2767:
2765:
2762:
2759:
2758:
2752:
2749:
2747:
2744:
2742:
2739:
2737:
2734:
2732:
2729:
2728:
2727:
2724:
2722:
2718:
2717:
2713:
2707:
2704:
2702:
2699:
2697:
2694:
2692:
2689:
2687:
2684:
2682:
2679:
2677:
2674:
2672:
2669:
2667:
2664:
2662:
2659:
2657:
2654:
2652:
2649:
2647:
2644:
2642:
2639:
2637:
2634:
2633:
2631:
2629:
2625:
2619:
2616:
2614:
2611:
2609:
2606:
2604:
2601:
2599:
2596:
2594:
2591:
2589:
2586:
2584:
2581:
2577:
2574:
2573:
2572:
2569:
2567:
2564:
2562:
2559:
2555:
2552:
2551:
2550:
2547:
2543:
2540:
2539:
2538:
2535:
2533:
2530:
2528:
2525:
2523:
2520:
2518:
2515:
2513:
2510:
2508:
2505:
2503:
2500:
2498:
2495:
2493:
2490:
2488:
2485:
2481:
2478:
2477:
2476:
2473:
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2466:
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2459:
2456:
2454:
2451:
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2446:
2444:
2441:
2439:
2436:
2434:
2431:
2427:
2424:
2422:
2419:
2418:
2417:
2414:
2412:
2409:
2407:
2404:
2400:
2397:
2396:
2395:
2392:
2390:
2387:
2385:
2382:
2378:
2375:
2374:
2373:
2370:
2368:
2365:
2363:
2360:
2356:
2353:
2352:
2351:
2348:
2344:
2341:
2340:
2339:
2336:
2332:
2329:
2328:
2327:
2324:
2322:
2319:
2317:
2314:
2312:
2309:
2307:
2304:
2302:
2299:
2297:
2294:
2290:
2287:
2286:
2285:
2282:
2280:
2277:
2275:
2272:
2270:
2267:
2263:
2260:
2259:
2258:
2255:
2253:
2250:
2248:
2245:
2243:
2240:
2238:
2235:
2233:
2230:
2226:
2223:
2222:
2221:
2218:
2216:
2213:
2209:
2206:
2205:
2204:
2201:
2197:
2194:
2193:
2192:
2189:
2187:
2184:
2180:
2177:
2176:
2175:
2172:
2168:
2165:
2164:
2163:
2160:
2158:
2155:
2153:
2150:
2148:
2145:
2143:
2140:
2138:
2135:
2133:
2130:
2128:
2125:
2123:
2120:
2118:
2115:
2113:
2110:
2108:
2105:
2103:
2100:
2098:
2095:
2093:
2090:
2089:
2087:
2085:
2080:
2074:
2071:
2069:
2066:
2064:
2061:
2059:
2056:
2054:
2051:
2049:
2046:
2044:
2041:
2039:
2036:
2034:
2031:
2029:
2026:
2024:
2021:
2019:
2016:
2014:
2011:
2009:
2006:
2004:
2001:
1999:
1996:
1994:
1991:
1989:
1986:
1984:
1981:
1979:
1976:
1974:
1971:
1969:
1966:
1964:
1961:
1959:
1956:
1954:
1951:
1949:
1946:
1944:
1941:
1939:
1936:
1934:
1931:
1929:
1926:
1924:
1921:
1919:
1916:
1914:
1911:
1909:
1906:
1904:
1901:
1899:
1896:
1894:
1891:
1889:
1886:
1884:
1881:
1879:
1876:
1874:
1871:
1869:
1866:
1864:
1861:
1860:
1858:
1854:
1853:Digital radio
1850:
1844:
1841:
1840:
1838:
1834:
1830:
1820:
1817:
1815:
1812:
1810:
1807:
1805:
1802:
1800:
1797:
1795:
1792:
1790:
1787:
1783:
1780:
1778:
1775:
1774:
1772:
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1734:
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1729:
1728:
1726:
1724:
1720:
1714:
1711:
1709:
1706:
1704:
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1699:
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1694:
1691:
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1681:
1679:
1676:
1674:
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1666:
1664:
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1654:
1651:
1649:
1646:
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1606:
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1589:
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1526:
1522:
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1509:
1508:
1506:
1502:
1499:
1497:
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1492:
1489:
1487:
1484:
1483:
1481:
1479:
1476:
1475:
1473:
1471:
1466:
1460:
1457:
1455:
1452:
1450:
1447:
1445:
1442:
1440:
1437:
1435:
1432:
1430:
1427:
1425:
1422:
1420:
1417:
1415:
1412:
1410:
1407:
1405:
1402:
1400:
1397:
1395:
1392:
1390:
1387:
1385:
1382:
1380:
1377:
1375:
1372:
1370:
1367:
1365:
1362:
1360:
1357:
1356:
1354:
1352:
1347:
1343:
1339:
1331:
1326:
1324:
1319:
1317:
1312:
1311:
1308:
1301:
1298:
1295:
1291:
1288:
1287:
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1276:
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1267:
1264:
1260:
1256:
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1244:
1240:
1235:
1232:
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1224:
1219:
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1212:
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1203:
1200:
1196:
1192:
1187:
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1180:
1176:
1171:
1168:
1164:
1160:
1155:
1152:
1148:
1144:
1139:
1137:
1133:
1129:
1125:
1120:
1118:
1116:
1112:
1108:
1104:
1099:
1096:
1092:
1088:
1083:
1080:
1076:
1072:
1067:
1064:
1060:
1056:
1051:
1048:
1043:
1039:
1033:
1030:
1026:
1022:
1017:
1014:
1010:
1004:
1001:
997:
993:
988:
985:
981:
977:
972:
969:
965:
961:
956:
953:
949:
945:
940:
937:
933:
929:
924:
921:
915:
912:
908:
904:
899:
896:
892:
888:
883:
880:
876:
871:
868:
864:
863:Popular Radio
860:
855:
852:
848:
843:
840:
836:
832:
827:
824:
820:
816:
811:
809:
805:
801:
797:
792:
790:
786:
782:
778:
773:
770:
766:
760:
757:
753:
749:
744:
741:
737:
733:
728:
726:
722:
718:
714:
709:
706:
702:
698:
693:
691:
687:
683:
679:
674:
672:
668:
664:
658:
656:
654:
650:
646:
640:
637:
633:
629:
624:
622:
618:
614:
610:
605:
603:
599:
595:
591:
586:
584:
580:
576:
572:
567:
565:
561:
557:
556:
550:
548:
544:
540:
536:
531:
528:
524:
520:
515:
512:
508:
504:
499:
496:
492:
488:
483:
480:
476:
472:
467:
464:
460:
456:
451:
448:
444:
438:
435:
431:
427:
422:
419:
415:
411:
406:
404:
400:
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392:
387:
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371:
367:
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344:
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335:
334:
330:
327:
324:
321:
320:
316:
312:
308:
305:
302:
299:
298:
294:
291:
289:First license
288:
285:
284:
281:
275:
273:
269:
265:
261:
259:
254:
246:
244:
242:
237:
233:
229:
224:
222:
218:
213:
208:
205:
196:
189:
187:
185:
180:
177:
169:
167:
163:
161:
156:
154:
149:
147:
138:
131:
129:
122:
120:
117:
113:
109:
103:
101:
95:
92:
87:
79:
72:
67:
65:
62:
60:
56:
52:
47:
45:
39:
37:
31:
29:
25:
21:
2774:LaSalle–Peru
2680:
1470:FM frequency
1351:AM frequency
1293:
1274:
1266:
1258:
1250:
1242:
1234:
1226:
1218:
1210:
1202:
1194:
1186:
1178:
1170:
1163:Broadcasting
1162:
1154:
1146:
1127:
1107:Broadcasting
1106:
1098:
1090:
1082:
1074:
1066:
1058:
1050:
1041:
1032:
1024:
1016:
1008:
1003:
995:
987:
979:
971:
963:
955:
947:
939:
931:
923:
914:
907:Radio Digest
906:
898:
890:
882:
870:
862:
854:
846:
842:
834:
826:
818:
799:
780:
772:
764:
759:
751:
743:
736:Radio Digest
735:
716:
708:
700:
681:
662:
644:
639:
631:
612:
593:
574:
554:
538:
530:
522:
514:
506:
498:
490:
482:
474:
466:
458:
450:
442:
437:
429:
421:
413:
394:
386:
279:
270:
266:
262:
250:
243:in Batavia.
225:
211:
209:
203:
201:
181:
173:
164:
157:
150:
143:
126:
111:
104:
99:
96:
88:
84:
63:
48:
40:
35:
32:
19:
18:
2811:TV stations
1756:Translators
523:Radio World
2856:Categories
2816:Newspapers
1061:, page 13.
379:References
2836:coverage.
2834:nighttime
2084:call sign
1836:frequency
891:Radio Age
781:Radio Age
613:Radio Age
328:Mid-1924.
24:call sign
2790:See also
2784:Rockford
2769:Kankakee
2686:WMBB-WOK
1342:Illinois
22:was the
2726:Chicago
2628:Defunct
2613:WZQC-LP
2537:WTBC-FM
2502:WRME-LD
2487:WQEG-LP
2448:WNUR-FM
2416:WMBI-FM
2384:WLPN-LP
2372:WLIT-FM
2367:WLEY-FM
2350:WKSC-FM
2284:WGCI-FM
2252:WCXP-LP
2220:WCHI-FM
2203:WCFS-FM
2162:WBBM-FM
2073:107.5-2
2068:107.5-1
2063:106.7-1
2058:106.3-1
2053:105.9-2
2048:105.9-1
2043:105.1-3
2038:105.1-2
2033:105.1-1
2028:104.3-2
2023:104.3-1
2018:103.5-2
2013:103.5-1
2008:102.7-2
2003:102.7-1
1998:101.9-2
1993:101.9-1
1988:101.1-2
1983:101.1-1
1978:100.3-2
1973:100.3-1
1581:WNUR-FM
1338:Chicago
100:Bowdoin
68:History
2736:DeKalb
2394:WLS-FM
2147:W284DA
2142:W280EM
2137:W276BM
2132:W268AY
2127:W264BF
2122:W248BB
2117:W244BQ
2112:W240EH
2107:W240DE
2102:W236CF
2097:W216CL
1968:99.5-1
1963:98.7-1
1958:97.1-2
1953:97.1-1
1948:96.3-2
1943:96.3-1
1938:95.5-2
1933:95.5-1
1928:94.7-2
1923:94.7-1
1918:93.9-2
1913:93.9-1
1908:93.1-1
1903:91.5-2
1898:91.5-1
1893:90.7-1
1888:90.1-3
1883:90.1-2
1878:90.1-1
1873:89.3-2
1868:89.3-1
1863:88.1-1
1843:162.55
1782:W240EH
1777:W240DE
2825:Notes
2092:KWO39
1819:104.7
1814:103.9
1809:103.1
1804:101.5
1799:100.7
1773:95.9
1746:107.1
1741:105.5
1713:107.9
1708:107.5
1703:106.7
1698:106.3
1693:105.9
1688:105.1
1683:104.3
1678:103.5
1673:102.7
1668:101.9
1663:101.1
1658:100.3
1572:89.3
1552:88.9
1527:88.5
1507:88.3
1482:88.1
276:Recap
2681:WJAZ
2671:WENR
2618:WZRD
2608:WYLL
2603:WYHI
2598:WXRT
2593:WXES
2588:WXAV
2583:WVON
2571:WVAZ
2566:WUSN
2561:WTZI
2549:WTMX
2532:WSRB
2527:WSCR
2522:WSBC
2517:WRTO
2512:WRTE
2507:WRRG
2497:WRLL
2492:WRDZ
2475:WPPN
2458:WOJO
2453:WNWI
2443:WNTH
2438:WNTD
2433:WMVP
2411:WLUW
2406:WLTL
2362:WKTA
2338:WKQX
2326:WKKC
2321:WIND
2316:WIIT
2311:WHPK
2306:WHFH
2301:WGRB
2279:WGBK
2274:WFMT
2269:WEUR
2257:WDRV
2247:WCRX
2242:WCPY
2237:WCPT
2232:WCKL
2215:WCGO
2191:WBMX
2186:WBGX
2174:WBEZ
2157:WBBM
2152:WARG
1794:97.5
1789:96.7
1769:95.1
1764:91.1
1736:99.1
1731:98.3
1723:LPFM
1653:99.9
1648:99.5
1643:98.7
1638:97.9
1633:97.1
1628:96.3
1623:95.5
1618:94.7
1613:93.9
1608:93.1
1603:92.7
1598:91.5
1593:90.7
1588:90.1
1576:WKKC
1566:WRRG
1561:WIIT
1556:WARG
1548:88.7
1541:WHPK
1536:WHFH
1531:WGBK
1521:WZRD
1516:WXAV
1511:WHCM
1501:WTZI
1496:WNTH
1491:WLTL
1486:WCRX
1478:87.7
1459:1690
1454:1590
1449:1570
1444:1490
1439:1450
1434:1390
1429:1330
1424:1300
1419:1240
1414:1200
1409:1160
1404:1110
1399:1080
1394:1000
370:WCKY
258:WLAC
253:WCKY
241:WORD
108:WSCR
20:WJAZ
2839:2.
2828:1.
2576:HD2
2554:HD2
2542:HD2
2480:HD2
2468:HD3
2463:HD2
2426:HD3
2421:HD2
2399:HD2
2389:WLS
2377:HD2
2355:HD2
2343:HD2
2331:HD2
2296:WGN
2289:HD2
2262:HD2
2225:HD2
2208:HD2
2196:HD2
2179:HD2
2167:HD2
2082:By
1468:By
1389:950
1384:890
1379:820
1374:780
1369:720
1364:670
1359:560
1349:By
978:,
349:'s
315:KYW
311:WGN
184:KOA
116:WGN
2858::
1340:,
1273:,
1257:,
1241:,
1225:,
1209:,
1193:,
1177:,
1161:,
1145:,
1135:^
1126:,
1114:^
1105:,
1089:,
1057:,
1040:.
1023:,
994:,
905:,
889:,
861:,
833:,
817:,
807:^
798:,
788:^
779:,
750:,
734:,
724:^
715:,
699:,
689:^
680:,
670:^
652:^
630:,
620:^
611:,
601:^
592:,
582:^
573:,
563:^
546:^
537:,
521:,
505:,
489:,
473:,
457:,
428:,
402:^
372:.
317:.
61:.
30:.
1329:e
1322:t
1315:v
359:4
336:3
322:2
300:1
286:#
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