Headquarters Task Group 7.2 Joint Task Force SEVEN APO 187 c/o Postmaster San Francisco, California 22 December 1953 sprendix VII to Annex G, to CTG 7.2, Operation Plan No, 3-53 CONTROL OF ELACTRONIC EMISSIONS ND SURFACE LIGHTING 1. GENERAL: Public law 200 authorized the President to control eclectromag- netic radiations between 10 kilocyeles and 100,000 megacycles which are Suitable for use as a navigational aid beyond 5 niles, a. Enemy Forces: See annex C, Intelligence and Security. ob. Friendly Forces: c. Asswaptions: CINCP/.C controls aids to navigation in the Pacific Command, (2) That eneny forees will rely primarily on celestial and/ ° or radar means for nevigation, out that electronic emissions and surface lighting could be used to increase tho accuracy of attack. (2) That the extent of control of electronic emissions should satisfy the following conditions: (a) Degree of prctcction to be gained must be greater than tne cost of controls to the war cifort, (o) essential cmissions. (3) Controls should be imposed on all types of non- That the inportance of blackout, dimout, and camouflage has been reduced by the developments in clectronic devices and bombing techniques so that total blackout is nct longer justified. d. Concent of Control: (1) The priority of «1 .tr nic facilities in order of essentjality is as follows: (a) Air defons. > communication systeris (aircraft c::- GCA, and sinilar circuits. 5 and the attendant air defense +', antiaireraft weapon control, (ob) Point—to-p. _.- litery communications, (c) Fleet commu... .icn3 including Fleet broadcasts. (4) Aeronautical .r/sround and acronautical point-topoint circuits including those opcrat.i oy civil or private agencies. (c) Electronic Navigational Aids, i. RACON and YE ~ YC beacons, 2. Low frequency honing beacons, 9 3. LORAN (a plan proposed by jes for control of LOR/N may preelude the necessity of shutting down this facility:, (f) (g) Standard broadcast stations and short wave broadcasts, Utilities maintenance circuits, BEST AVAILABLE COPY G~-VII~1,. PN ae anagem re EK aerate emt

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