Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

514 FREQUENCY MODULATION, Volume Ioris consideration of power and location. Appropriate chartsand tables are also included.* Decimal Classification : R630.ll.:|: See previous papers.'Range Prediction Chart for FM Stations"*, F. C. Everettf, Communications(November) 1945.Broadcast News (reprinted from Communications) . . . (January) 1946.Summary— The chart makes it possible to determine the signalsthat can be expected with various powers, antenna heights anddistances. Heights indicated are those of transmitting antennaover average terrain to point in question and receiving antennaheight of 30 feet. Several examples of the use of the chart areincluded.* Decimal Classification : R630.ll.| Engineering Department, National Broadcasting Co., Inc., New York,N. Y."How to Make a Field Survey of an FM Station"*, G. W. KlingamanJ,Broadcast News (June) 1946.Summary— This article discusses the mechanics involved inmaking a practical field survey for an FM station and presentstypical data from surveys which have been made. Topics coveredinclude: methods, equipment, making the survey, organizing thedata, and discussion of the results. (See also next paper)* Decimal Classification: R270 x R630.ll.t Engineering Products Department, RCA Victor Division, Camden,N. J."A Discussion of FM Field Survey Methods"*, Broadcast News(June) 1946.Summary— This paper carries a reprint of Section 5 of the FCC's"Standard of Good Engineering Practise Concerning FM BroadcastStations" and disqusses FM field survey methods in the lightof these standards. The paper includes sections on methods ofmaking mobile recordings, method of analyzing recordings,determining the 1000 po/m contour, determining the 50 pv/mcontour, determining the interference area, maps, exhibits, etc.Procedures outlined by the FCC differ slightly from those describedin the preceding paper and these slight differences shouldbe noted.* Decimal Classification: R270 x R630.ll.