Using a new propagation measurement set-up, which produces a high number of data, enabling a proper statistical analysis, and resulting in very concise results, propagation measurements were performed and analyzed at 16 residential locations in The Netherlands in the frequency range from 1.8 to 28 MHz. In the whole frequency range the propagation loss appears to be higher than might be expected according the International Telecommunication Union ground-wave propagation model. Also typical characteristics of that model are not present, but instead the propagation shows a constant roll-off in dBs per decade, with a slope increasing with frequency. A regression curve could be established, and constants filled in. This statistical information may be used for building an accumulation model to lay a causality between source powers, source densities, and local man-made noise levels.

中文翻译：

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荷兰城市地区中频和高频频段的传播测量与分析

使用一种新的传播测量装置，它产生大量数据，能够进行适当的统计分析，并产生非常简洁的结果，在荷兰的 16 个住宅地点进行传播测量并进行分析，频率范围从 1.8 到28兆赫。在整个频率范围内，传播损耗似乎比根据国际电信联盟地波传播模型预期的要高。该模型的典型特征也不存在，而是传播显示出每十倍频程以 dB 为单位的恒定滚降，斜率随频率增加。可以建立回归曲线，并填写常数。该统计信息可用于建立累积模型，以在源功率、源密度、