00515pamaa2200169 4500 0000017612 20060614090000.0 0070376182 621.38412 LEN 1992 TK6553 LEN 1992 LENK Lenk's RF handbook : operations and troubleshooting John D. Lenk. Blue Ridge Summit: TAB Books, 1992. xiii, [7.43]p.: 23cm. Radio circuits -- Maintenance and repair Electronic circuit design Radio circuits