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"Top Secret" Registry of US Government Book. “Top Secret” Registry of US Government Radio Frequencies Book. The “Top Secret” Registry of US Government Radio Frequencies Book is the ultimate scanner directory, 8th edition has more than twice the listings as before, 120,000 easy-to read. This book tips you off to literally thousands of active channels in use by the FBI, Secret Service, CIA, ATF, the Military, defense contractors, and more. 269 pages, 8x11 paperback. |