Basic Radio Propagation Predictions for ... Three Months in AdvanceThe Laboratory, 1951 - Radio broadcasting |
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Air Force Army Atlantic Radio Propagation Basic Radio Propagation Bureau of Standards Central Radio Propagation Civil Aeronautics Administration CRPL Series CRPL-D series Department Dept disturbed during following E-layer excess of 15 Experimental Studies extending franking privileges F2 layer Federal Communications Commission Forecast of days FOT OWF geomagnetic given in Circular Government Printing Office GRID DIV 14 Ionosphere Characteristics ionospheric absorption Ionospheric Propagation Ionospheric Radio Propagation IRPL LATITUDE GRID DIV Loran System maximum usable frequencies methods money order Months in Advance MUF and FOT National Bureau Navy NBS 489 LOCAL NBS Circular 465 Nomographic North Atlantic Radio Propagation as Applied Radio disturbance Radio Propagation Disturbances Radio Propagation Forecast Radio Propagation Laboratory Radio Propagation Phenomena Radio Propagation Predictions relation between radio Solar Activity Studies of Ionospheric sunspot Superintendent of Documents Superseded by JANP transmission distance Tropospheric Propagation U. S. Government Printing variations Washington 25 Weather Bureau