01758oam 2200469 450 991070019810332120121123114738.0(CKB)5470000002406981(OCoLC)778360146(EXLCZ)99547000000240698120120226d1980 ua 0engurun||||a|a||txtrdacontentcrdamediacrrdacarrierEffect of small frequency changes on the radiation patterns of MF (AM) directional antennas[electronic resource] /A.C. Stewart, J.B. Heffelfinger[Washington] :Dept. of Commerce, National Telecommunications and Information Administration,[1980]v, 55 pages illustrations ;28 cmNTIA report ;80-39"May 1980."TItle from title screen (viewed on Feb. 26, 2012).Includes bibliographical references.Effect of small frequency changes on the radiation patterns of MF Radio broadcastingUnited StatesPhased array antennasRadio frequency allocationUnited StatesRadio broadcastingPhased array antennas.Radio frequency allocationStewart A. C(Arthur C.)1397098Heffelfinger John B.1917-1397099United States.National Telecommunications and Information Administration.OCLCEOCLCEGPOOCLCOGPOBOOK9910700198103321Effect of small frequency changes on the radiation patterns of MF (AM) directional antennas3458327UNINA