The SX-115 was made from 1961 to 1964 and it did not cover 11 meters. Citizen's band began in 1945 on 460 to 470 MHz. In 1958 the Class D Citizen's Radio Service was started and it was on 26.965 to 27.225 MHZ. There is a good article about CB on Wikipedis. . . . 73 Gene, WØQFC www.w0qfc.com