Some newspaper accounts state that the call sign for Laxton's home amateur station was either 4BX ("Mayor Gets Wireless Message From Harding", Charlotte Observer, February 22, 1921, page 4) or 4CL ("WBT Third Broadcasting Station to be Licensed", Charlotte Observer, March 20, 1927, Section 3, page 6). However, official government station lists report that these call signs were actually assigned to individuals in other communities. As of June 30, 1920, Laxton's station is listed in the annual government report as 4DD, located at 905 Realty Building in Charlotte, with Frank L. Bunker assigned 4CE at 734 East 4th Street, and Earle J. Gluck assigned 4CQ at 1418 East 7th Street. ("Amateur Stations: Fourth District", Amateur Radio Stations of the United States (Edition June 30, 1920), page 59.) The November 1920 issue of QST magazine also stated that Laxton's call sign was 4DD. ("The Operating Department", (Roanoke Division), QST, November 1920, page 30).
"New Stations: Special Land Stations", Radio Service Bulletin, June 1, 1921, page 3. The "4" in 4XD's call sign indicated that the station was located in the 4th Radio Inspection district, while the "X" signified that it was operating under an experimental station license.
"New Stations: Commercial Land Stations", Radio Service Bulletin, April 1, 1922, page 2. Limited Commercial license, serial No. 341, issued March 18, 1922, to the Southern Radio Corporation for broadcasting on 360 meters (833 kHz) for a three-month period. (A 1927 Charlotte Observer account claimed that "the station became duly licensed and authorized in December, 1920, with the call WBT" and "was the third licensed station in the world" ("WBT Third Broadcasting Station to be Licensed", Charlotte Observer, March 20, 1927, Section 3, page 6), but contemporary accounts do not support either of these claims.)
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Betts, Jack (November 30, 2006). "They miss WBT up in Maryland". This Old State. CharlotteObserver.com. Retrieved February 1, 2022.
