2.1    Background

2.2    Attenuation and Attenuation Coefficient at UHF

2.3    Single Tree Attenuation at L-Band

2.4    Attenuation through Vegetation: ITU-R Results

2.5    Distributions of Tree Attenuation at L-Band and K-Band

2.6    Seasonal Effects on Path Attenuation

2.6.1    Effects of Foliage at UHF
2.6.2    Effects of Foliage at L-Band
2.6.3    Effect of Foliage at K-Band

2.7    Frequency Scaling Considerations

2.7.1    Scaling between 870 MHz and L-Band
2.7.2    Scaling between 1 GHz and 4 GHz
2.7.3    Scaling between L-Band and K-Band

2.8    Conclusions and Recommendations

2.9    References