Active reserve (KGB) officers with a military rank who worked undercover in the Soviet Union. "Trusted contacts" were high placed civilians who collaborated with the KGB without signing any official working agreements, such as directors of personnel departments at various institutions, academics, deans, or writers and actors. Informers were citizens secretly recruited by the KGB, sometimes using forceful recruitment methods, such as blackmail. The precise number of people from various categories remains unknown, but one of the estimates was 11 million "informers" in the Soviet Union, or one out of every eighteen adult citizens The active reserve was established by Yuri Andropov in
KGB-FM (now KMYI) at 94.1 FM debuted in 1948. Rabel later sold the signal to Brown Broadcasting in 1958. KSON-FM was moved off the KSON AM tower on the corner of Highway 15 and Interstate 5, to the new site of sister station KGB (1360 AM, now KLSD) at 52nd Street and Kalmia. KSON-FM's call letters were changed to KGB-FM. In 1964, Brown Broadcasting hired Bill Drake to consult for the new KGB as the format he installed there later became known as "Boss Radio". In 1964, KGB and KGB-FM were separated, and the latter became KBKB, a beautiful music station.