Changes between Version 46 and Version 47 of Manual/PropagationModels/Introduction
 Timestamp:
 06/26/14 14:48:54 (3 years ago)
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Manual/PropagationModels/Introduction
v46 v47 20 20 21 21 = Model == Frequency Range == Distance Range == Typical Application Area = 22 [wiki:Manual/PropagationModels/P1546 ITUR P.1546 model (ITUR Rec.P.15461 and ITUR Rec.P.15464 available in SEAMCAT)]30 MHz  3 GHz11000 kmBroadcasting and other terrestrial services, typically considered in cases with high mounted transmitter anttena (e.g. above 5060 m). '''Note''' that ITUR Rec.P.15464 proposes a solution where values of distances less than 1 kmmay occur and where shortrange propagation model is not practicable and a simple means is required to converge towards freespace field strengths for arbitrarily short distances (see section 14 of ITUR Rec.P.15464).22 [wiki:Manual/PropagationModels/P1546 ITUR P.1546 model (ITUR Rec.P.15461 and ITUR Rec.P.15464 available in SEAMCAT)]30 MHz  3 GHz11000 kmBroadcasting and other terrestrial services, typically considered in cases with high mounted transmitter anttena (e.g. above 5060 m). '''Note''' that ITUR Rec.P.15464 proposes a solution where values of distances '''less than 1 km''' may occur and where shortrange propagation model is not practicable and a simple means is required to converge towards freespace field strengths for arbitrarily short distances (see section 14 of ITUR Rec.P.15464). 23 23 [wiki:Manual/PropagationModels/ExtendedHata Extended Hata model]30 MHz  3 GHzUp to 40 kmMobile services and other services working in nonLOS/cluttered environment . Note that in theory, the model can go up to 100 km since the curvature of the earth is included, but in practice it is recommended to use it up to 40 km. 24 24 [wiki:Manual/PropagationModels/ExtendedHata Extended HataSRD model]30 MHz  3 GHzUp to 300 mShort range links under directLOS assumption, '''important: antenna heights up to 3 m'''